/* 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
- Free Software Foundation, Inc.
+ Copyright (C) 1992-2019 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).
#include "system.h"
#include "coretypes.h"
#include "tm.h"
-#include <signal.h>
-#if ! defined( SIGCHLD ) && defined( SIGCLD )
-# define SIGCHLD SIGCLD
-#endif
+#include "filenames.h"
+#include "file-find.h"
+#include "simple-object.h"
+#include "lto-section-names.h"
+
+/* 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"
#define COLLECT
#include "collect2.h"
+#include "collect2-aix.h"
+#include "collect-utils.h"
+#include "diagnostic.h"
#include "demangle.h"
#include "obstack.h"
#include "intl.h"
cross-versions are in the proper directories. */
#ifdef CROSS_DIRECTORY_STRUCTURE
+#ifndef CROSS_AIX_SUPPORT
#undef OBJECT_FORMAT_COFF
+#endif
#undef MD_EXEC_PREFIX
#undef REAL_LD_FILE_NAME
#undef REAL_NM_FILE_NAME
#ifdef OBJECT_FORMAT_COFF
+#ifndef CROSS_DIRECTORY_STRUCTURE
#include <a.out.h>
#include <ar.h>
#endif
#include <ldfcn.h>
+#endif
/* 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
int do_collecting = 0;
#endif
+/* Cook up an always defined indication of whether we proceed the
+ "EXPORT_LIST" way. */
+
+#ifdef COLLECT_EXPORT_LIST
+#define DO_COLLECT_EXPORT_LIST 1
+#else
+#define DO_COLLECT_EXPORT_LIST 0
+#endif
+
/* Nonzero if we should suppress the automatic demangling of identifiers
in linker error messages. Set from COLLECT_NO_DEMANGLE. */
int no_demangle;
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 */
+static int aixlazy_flag; /* true if -blazy */
+#endif
+
+enum lto_mode_d {
+ LTO_MODE_NONE, /* Not doing LTO. */
+ LTO_MODE_LTO, /* Normal LTO. */
+ LTO_MODE_WHOPR /* WHOPR. */
+};
+
+/* Current LTO mode. */
+#ifdef ENABLE_LTO
+static enum lto_mode_d lto_mode = LTO_MODE_WHOPR;
+#else
+static enum lto_mode_d lto_mode = LTO_MODE_NONE;
#endif
-int debug; /* true if -debug */
+bool helpflag; /* true if --help */
static int shared_obj; /* true if -shared */
+static int static_obj; /* true if -static */
-static const char *c_file; /* <xxx>.c for constructor/destructor list. */
-static const char *o_file; /* <xxx>.o for constructor/destructor list. */
+static char *c_file; /* <xxx>.c for constructor/destructor list. */
+static 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
+static char **lto_o_files; /* Output files for LTO. */
const char *ldout; /* File for ld stdout. */
const char *lderrout; /* File for ld stderr. */
static const char *output_file; /* Output file for ld. */
const char *c_file_name; /* pathname of gcc */
static char *initname, *fininame; /* names of init and fini funcs */
+
+#ifdef TARGET_AIX_VERSION
+static char *aix_shared_initname;
+static char *aix_shared_fininame; /* init/fini names as per the scheme
+ described in config/rs6000/aix.h */
+#endif
+
static struct head constructors; /* list of constructors found */
static struct head destructors; /* list of destructors found */
#ifdef COLLECT_EXPORT_LIST
#endif
static struct head frame_tables; /* list of frame unwind info tables */
-static bool at_file_supplied; /* Whether to use @file arguments */
-static char *response_file; /* Name of any current response file */
+bool at_file_supplied; /* Whether to use @file arguments */
struct obstack temporary_obstack;
char * temporary_firstobj;
-/* Structure to hold all the directories in which to search for files to
- execute. */
+/* A string that must be prepended to a target OS path in order to find
+ it on the host system. */
+#ifdef TARGET_SYSTEM_ROOT
+static const char *target_system_root = TARGET_SYSTEM_ROOT;
+#else
+static const char *target_system_root = "";
+#endif
-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) */
-};
+/* Whether we may unlink the output file, which should be set as soon as we
+ know we have successfully produced it. This is typically useful to prevent
+ blindly attempting to unlink a read-only output that the target linker
+ would leave untouched. */
+bool may_unlink_output_file = false;
#ifdef COLLECT_EXPORT_LIST
/* Lists to keep libraries to be scanned for global constructors/destructors. */
static struct head libs; /* list of libraries */
+static struct head static_libs; /* list of statically linked 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
+/* List of names of object files containing LTO information.
+ These are a subset of the object file names appearing on the
+ command line, and must be identical, in the sense of pointer
+ equality, with the names passed to maybe_run_lto_and_relink(). */
+
+struct lto_object
+{
+ const char *name; /* Name of object file. */
+ struct lto_object *next; /* Next in linked list. */
+};
+
+struct lto_object_list
+{
+ struct lto_object *first; /* First list element. */
+ struct lto_object *last; /* Last list element. */
+};
+
+static struct lto_object_list lto_objects;
+
/* Special kinds of symbols that a name may denote. */
-typedef enum {
+enum symkind {
SYM_REGULAR = 0, /* nothing special */
SYM_CTOR = 1, /* constructor */
SYM_DTOR = 2, /* destructor */
SYM_INIT = 3, /* shared object routine that calls all the ctors */
SYM_FINI = 4, /* shared object routine that calls all the dtors */
- SYM_DWEH = 5 /* DWARF exception handling table */
-} symkind;
+ SYM_DWEH = 5, /* DWARF exception handling table */
+ SYM_AIXI = 6,
+ SYM_AIXD = 7
+};
+
+const char tool_name[] = "collect2";
static symkind is_ctor_dtor (const char *);
static void handler (int);
-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 maybe_unlink_list (char **);
static void add_to_list (struct head *, const char *);
static int extract_init_priority (const char *);
static void sort_ids (struct head *);
#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 **);
+static void post_ld_pass (bool);
+static void process_args (int *argcp, char **argv);
+
+/* Enumerations describing which pass this is for scanning the
+ program file ... */
+
+enum scanpass {
+ PASS_FIRST, /* without constructors */
+ PASS_OBJ, /* individual objects */
+ PASS_LIB, /* looking for shared libraries */
+ PASS_SECOND, /* with constructors linked in */
+ PASS_LTOINFO /* looking for objects with LTO info */
+};
+
+/* ... and which kinds of symbols are to be considered. */
+
+enum scanfilter_masks {
+ SCAN_NOTHING = 0,
+
+ SCAN_CTOR = 1 << SYM_CTOR,
+ SCAN_DTOR = 1 << SYM_DTOR,
+ SCAN_INIT = 1 << SYM_INIT,
+ SCAN_FINI = 1 << SYM_FINI,
+ SCAN_DWEH = 1 << SYM_DWEH,
+ SCAN_AIXI = 1 << SYM_AIXI,
+ SCAN_AIXD = 1 << SYM_AIXD,
+ SCAN_ALL = ~0
+};
+
+/* This type is used for parameters and variables which hold
+ combinations of the flags in enum scanfilter_masks. */
+typedef int scanfilter;
+
+/* Scan the name list of the loaded program for the symbols g++ uses for
+ static constructors and destructors.
+
+ The SCANPASS argument tells which collect processing pass this is for and
+ the SCANFILTER argument tells which kinds of symbols to consider in this
+ pass. Symbols of a special kind not in the filter mask are considered as
+ regular ones.
+
+ 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 *, scanpass, scanfilter);
+
\f
/* Delete tempfiles and exit function. */
void
-collect_exit (int status)
+tool_cleanup (bool from_signal)
{
if (c_file != 0 && c_file[0])
maybe_unlink (c_file);
maybe_unlink (export_file);
#endif
+ if (lto_o_files)
+ maybe_unlink_list (lto_o_files);
+
if (ldout != 0 && ldout[0])
{
- dump_file (ldout, stdout);
+ if (!from_signal)
+ dump_ld_file (ldout, stdout);
maybe_unlink (ldout);
}
if (lderrout != 0 && lderrout[0])
{
- dump_file (lderrout, stderr);
+ if (!from_signal)
+ dump_ld_file (lderrout, stderr);
maybe_unlink (lderrout);
}
-
- if (status != 0 && output_file != 0 && output_file[0])
- maybe_unlink (output_file);
-
- if (response_file)
- maybe_unlink (response_file);
-
- exit (status);
}
-\f
-/* Notify user of a non-error. */
-void
-notice (const char *cmsgid, ...)
+static void
+collect_atexit (void)
{
- va_list ap;
-
- va_start (ap, cmsgid);
- vfprintf (stderr, _(cmsgid), ap);
- va_end (ap);
+ tool_cleanup (false);
}
-/* Die when sys call fails. */
-
-void
-fatal_perror (const char * cmsgid, ...)
+static void
+handler (int signo)
{
- int e = errno;
- va_list ap;
+ tool_cleanup (true);
- 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);
+ signal (signo, SIG_DFL);
+ raise (signo);
}
-
-/* Just die. */
-
+/* Notify user of a non-error, without translating the format string. */
void
-fatal (const char * cmsgid, ...)
+notice_translated (const char *cmsgid, ...)
{
va_list ap;
va_start (ap, cmsgid);
- fprintf (stderr, "collect2: ");
- vfprintf (stderr, _(cmsgid), ap);
- fprintf (stderr, "\n");
+ vfprintf (stderr, cmsgid, ap);
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);
}
-\f
-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
-
- if (response_file)
- maybe_unlink (response_file);
-
- signal (signo, SIG_DFL);
- raise (signo);
-}
-
\f
int
file_exists (const char *name)
}
\f
void
-dump_file (const char *name, FILE *to)
+dump_ld_file (const char *name, FILE *to)
{
FILE *stream = fopen (name, "r");
static symkind
is_ctor_dtor (const char *s)
{
- struct names { const char *const name; const int len; const int ret;
+ struct names { const char *const name; const int len; symkind ret;
const int two_underscores; };
const struct names *p;
{ "GLOBAL__F_", sizeof ("GLOBAL__F_")-1, SYM_DWEH, 0 },
{ "GLOBAL__FI_", sizeof ("GLOBAL__FI_")-1, SYM_INIT, 0 },
{ "GLOBAL__FD_", sizeof ("GLOBAL__FD_")-1, SYM_FINI, 0 },
+#ifdef TARGET_AIX_VERSION
+ { "GLOBAL__AIXI_", sizeof ("GLOBAL__AIXI_")-1, SYM_AIXI, 0 },
+ { "GLOBAL__AIXD_", sizeof ("GLOBAL__AIXD_")-1, SYM_AIXD, 0 },
+#endif
{ NULL, 0, SYM_REGULAR, 0 }
};
{
if (ch == p->name[0]
&& (!p->two_underscores || ((s - orig_s) >= 2))
- && strncmp(s, p->name, p->len) == 0)
+ && strncmp (s, p->name, p->len) == 0)
{
return p->ret;
}
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 (IS_ABSOLUTE_PATH (name))
- {
- if (access (name, X_OK) == 0)
- {
- strcpy (temp, name);
-
- if (debug)
- fprintf (stderr, " - found: absolute path\n");
-
- return temp;
- }
+#ifdef OBJECT_FORMAT_NONE
-#ifdef HOST_EXECUTABLE_SUFFIX
- /* Some systems have a suffix for executable files.
- So try appending that. */
- strcpy (temp, name);
- strcat (temp, HOST_EXECUTABLE_SUFFIX);
+/* 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. */
- if (access (temp, X_OK) == 0)
- return temp;
-#endif
+static void
+add_lto_object (struct lto_object_list *list, const char *name)
+{
+ struct lto_object *n = XNEW (struct lto_object);
+ n->name = name;
+ n->next = NULL;
- if (debug)
- fprintf (stderr, " - failed to locate using absolute path\n");
- }
+ if (list->last)
+ list->last->next = n;
else
- for (pl = pprefix->plist; pl; pl = pl->next)
- {
- struct stat st;
-
- strcpy (temp, pl->prefix);
- strcat (temp, name);
+ list->first = n;
- 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;
+ list->last = n;
}
+#endif /* OBJECT_FORMAT_NONE */
+
-/* Add an entry for PREFIX to prefix list PPREFIX. */
+/* Perform a link-time recompilation and relink if any of the object
+ files contain LTO info. The linker command line LTO_LD_ARGV
+ represents the linker command that would produce a final executable
+ without the use of LTO. OBJECT_LST is a vector of object file names
+ appearing in LTO_LD_ARGV that are to be considered for link-time
+ recompilation, where OBJECT is a pointer to the last valid element.
+ (This awkward convention avoids an impedance mismatch with the
+ usage of similarly-named variables in main().) The elements of
+ OBJECT_LST must be identical, i.e., pointer equal, to the
+ corresponding arguments in LTO_LD_ARGV.
+
+ Upon entry, at least one linker run has been performed without the
+ use of any LTO info that might be present. Any recompilations
+ necessary for template instantiations have been performed, and
+ initializer/finalizer tables have been created if needed and
+ included in the linker command line LTO_LD_ARGV. If any of the
+ object files contain LTO info, we run the LTO back end on all such
+ files, and perform the final link with the LTO back end output
+ substituted for the LTO-optimized files. In some cases, a final
+ link with all link-time generated code has already been performed,
+ so there is no need to relink if no LTO info is found. In other
+ cases, our caller has not produced the final executable, and is
+ relying on us to perform the required link whether LTO info is
+ present or not. In that case, the FORCE argument should be true.
+ Note that the linker command line argument LTO_LD_ARGV passed into
+ this function may be modified in place. */
static void
-add_prefix (struct path_prefix *pprefix, const char *prefix)
+maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
+ const char **object, bool force)
{
- struct prefix_list *pl, **prev;
- int len;
+ const char **object_file = CONST_CAST2 (const char **, char **, object_lst);
- 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. */
+ int num_lto_c_args = 1; /* Allow space for the terminating NULL. */
- len = strlen (prefix);
- if (len > pprefix->max_len)
- pprefix->max_len = len;
+ while (object_file < object)
+ {
+ /* If file contains LTO info, add it to the list of LTO objects. */
+ scan_prog_file (*object_file++, PASS_LTOINFO, SCAN_ALL);
- pl = XNEW (struct prefix_list);
- pl->prefix = xstrdup (prefix);
+ /* Increment the argument count by the number of object file arguments
+ we will add. An upper bound suffices, so just count all of the
+ object files regardless of whether they contain LTO info. */
+ num_lto_c_args++;
+ }
- if (*prev)
- pl->next = *prev;
- else
- pl->next = (struct prefix_list *) 0;
- *prev = pl;
-}
-\f
-/* Take the value of the environment variable ENV, break it into a path, and
- add of the entries to PPREFIX. */
+ if (lto_objects.first)
+ {
+ char **lto_c_argv;
+ const char **lto_c_ptr;
+ char **p;
+ char **lto_o_ptr;
+ struct lto_object *list;
+ char *lto_wrapper = getenv ("COLLECT_LTO_WRAPPER");
+ struct pex_obj *pex;
+ const char *prog = "lto-wrapper";
+ int lto_ld_argv_size = 0;
+ char **out_lto_ld_argv;
+ int out_lto_ld_argv_size;
+ size_t num_files;
+
+ if (!lto_wrapper)
+ fatal_error (input_location, "environment variable "
+ "%<COLLECT_LTO_WRAPPER%> must be set");
+
+ num_lto_c_args++;
+
+ /* There is at least one object file containing LTO info,
+ so we need to run the LTO back end and relink.
+
+ To do so we build updated ld arguments with first
+ LTO object replaced by all partitions and other LTO
+ objects removed. */
+
+ lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args);
+ lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv);
+
+ *lto_c_ptr++ = lto_wrapper;
+
+ /* Add LTO objects to the wrapper command line. */
+ for (list = lto_objects.first; list; list = list->next)
+ *lto_c_ptr++ = list->name;
+
+ *lto_c_ptr = NULL;
+
+ /* Run the LTO back end. */
+ pex = collect_execute (prog, lto_c_argv, NULL, NULL, PEX_SEARCH,
+ at_file_supplied);
+ {
+ int c;
+ FILE *stream;
+ size_t i;
+ char *start, *end;
-static void
-prefix_from_env (const char *env, struct path_prefix *pprefix)
-{
- const char *p;
- GET_ENVIRONMENT (p, env);
+ stream = pex_read_output (pex, 0);
+ gcc_assert (stream);
- if (p)
- prefix_from_string (p, pprefix);
-}
+ num_files = 0;
+ while ((c = getc (stream)) != EOF)
+ {
+ obstack_1grow (&temporary_obstack, c);
+ if (c == '\n')
+ ++num_files;
+ }
-static void
-prefix_from_string (const char *p, struct path_prefix *pprefix)
-{
- const char *startp, *endp;
- char *nstore = XNEWVEC (char, strlen (p) + 3);
+ lto_o_files = XNEWVEC (char *, num_files + 1);
+ lto_o_files[num_files] = NULL;
+ start = XOBFINISH (&temporary_obstack, char *);
+ for (i = 0; i < num_files; ++i)
+ {
+ end = start;
+ while (*end != '\n')
+ ++end;
+ *end = '\0';
- if (debug)
- fprintf (stderr, "Convert string '%s' into prefixes, separator = '%c'\n", p, PATH_SEPARATOR);
+ lto_o_files[i] = xstrdup (start);
- 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;
+ start = end + 1;
+ }
- if (debug)
- fprintf (stderr, " - add prefix: %s\n", nstore);
+ obstack_free (&temporary_obstack, temporary_firstobj);
+ }
+ do_wait (prog, pex);
+ pex = NULL;
- add_prefix (pprefix, nstore);
- if (*endp == 0)
+ /* Compute memory needed for new LD arguments. At most number of original arguments
+ plus number of partitions. */
+ for (lto_ld_argv_size = 0; lto_ld_argv[lto_ld_argv_size]; lto_ld_argv_size++)
+ ;
+ out_lto_ld_argv = XCNEWVEC (char *, num_files + lto_ld_argv_size + 1);
+ out_lto_ld_argv_size = 0;
+
+ /* After running the LTO back end, we will relink, substituting
+ the LTO output for the object files that we submitted to the
+ LTO. Here, we modify the linker command line for the relink. */
+
+ /* Copy all arguments until we find first LTO file. */
+ p = lto_ld_argv;
+ while (*p != NULL)
+ {
+ for (list = lto_objects.first; list; list = list->next)
+ if (*p == list->name) /* Note test for pointer equality! */
+ break;
+ if (list)
break;
- endp = startp = endp + 1;
- }
- else
- endp++;
+ out_lto_ld_argv[out_lto_ld_argv_size++] = *p++;
+ }
+
+ /* Now insert all LTO partitions. */
+ lto_o_ptr = lto_o_files;
+ while (*lto_o_ptr)
+ out_lto_ld_argv[out_lto_ld_argv_size++] = *lto_o_ptr++;
+
+ /* ... and copy the rest. */
+ while (*p != NULL)
+ {
+ for (list = lto_objects.first; list; list = list->next)
+ if (*p == list->name) /* Note test for pointer equality! */
+ break;
+ if (!list)
+ out_lto_ld_argv[out_lto_ld_argv_size++] = *p;
+ p++;
+ }
+ out_lto_ld_argv[out_lto_ld_argv_size++] = 0;
+
+ /* Run the linker again, this time replacing the object files
+ optimized by the LTO with the temporary file generated by the LTO. */
+ fork_execute ("ld", out_lto_ld_argv, HAVE_GNU_LD && at_file_supplied);
+ /* We assume that temp files were created, and therefore we need to take
+ that into account (maybe run dsymutil). */
+ post_ld_pass (/*temp_file*/true);
+ free (lto_ld_argv);
+
+ maybe_unlink_list (lto_o_files);
}
- free (nstore);
+ else if (force)
+ {
+ /* Our caller is relying on us to do the link
+ even though there is no LTO back end work to be done. */
+ fork_execute ("ld", lto_ld_argv, HAVE_GNU_LD && at_file_supplied);
+ /* No LTO objects were found, so no new temp file. */
+ post_ld_pass (/*temp_file*/false);
+ }
+ else
+ post_ld_pass (false); /* No LTO objects were found, no temp file. */
}
\f
/* Main program. */
int
main (int argc, char **argv)
{
- static const char *const ld_suffix = "ld";
+ enum linker_select
+ {
+ USE_DEFAULT_LD,
+ USE_PLUGIN_LD,
+ USE_GOLD_LD,
+ USE_BFD_LD,
+ USE_LLD_LD,
+ USE_LD_MAX
+ } selected_linker = USE_DEFAULT_LD;
+ static const char *const ld_suffixes[USE_LD_MAX] =
+ {
+ "ld",
+ PLUGIN_LD_SUFFIX,
+ "ld.gold",
+ "ld.bfd",
+ "ld.lld"
+ };
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 strip_suffix = "strip";
static const char *const gstrip_suffix = "gstrip";
+ const char *full_ld_suffixes[USE_LD_MAX];
#ifdef CROSS_DIRECTORY_STRUCTURE
/* 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 =
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_nm_suffix = nm_suffix;
+ const char *const full_gnm_suffix = gnm_suffix;
const char *const full_strip_suffix = strip_suffix;
const char *const full_gstrip_suffix = gstrip_suffix;
#endif /* CROSS_DIRECTORY_STRUCTURE */
const char **c_ptr;
char **ld1_argv;
const char **ld1;
+ bool use_plugin = false;
+ bool use_collect_ld = 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
+ AIX where we perform an early scan of objects and libraries to fetch
+ the list of global ctors/dtors and make sure they are not garbage
+ collected. */
+ scanfilter ld1_filter = SCAN_ALL;
+
char **ld2_argv;
const char **ld2;
char **object_lst;
const char **object;
+#ifdef TARGET_AIX_VERSION
+ int object_nbr = argc;
+#endif
int first_file;
int num_c_args;
char **old_argv;
+#ifdef COLLECT_EXPORT_LIST
+ bool is_static = false;
+#endif
+ int i;
+
+ for (i = 0; i < USE_LD_MAX; i++)
+ full_ld_suffixes[i]
+#ifdef CROSS_DIRECTORY_STRUCTURE
+ = concat (target_machine, "-", ld_suffixes[i], NULL);
+#else
+ = ld_suffixes[i];
+#endif
+
+ p = argv[0] + strlen (argv[0]);
+ while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
+ --p;
+ progname = p;
+
+ xmalloc_set_program_name (progname);
old_argv = argv;
expandargv (&argc, &argv);
if (argv != old_argv)
at_file_supplied = 1;
+ process_args (&argc, argv);
+
num_c_args = argc + 9;
+#ifndef HAVE_LD_DEMANGLE
no_demangle = !! getenv ("COLLECT_NO_DEMANGLE");
/* Suppress demangling by the real linker, which may be broken. */
- putenv (xstrdup ("COLLECT_NO_DEMANGLE="));
+ putenv (xstrdup ("COLLECT_NO_DEMANGLE=1"));
+#endif
#if defined (COLLECT2_HOST_INITIALIZATION)
/* Perform system dependent initialization, if necessary. */
gcc_init_libintl ();
+ diagnostic_initialize (global_dc, 0);
+
+ if (atexit (collect_atexit) != 0)
+ fatal_error (input_location, "atexit failed");
+
/* 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 = XCNEWVEC (char *, argc+4));
- ld2 = (const char **)(ld2_argv = XCNEWVEC (char *, argc+11));
- object = (const char **)(object_lst = XCNEWVEC (char *, argc));
+ ld1_argv = XCNEWVEC (char *, argc + 4);
+ ld1 = CONST_CAST2 (const char **, char **, ld1_argv);
+ ld2_argv = XCNEWVEC (char *, argc + 11);
+ ld2 = CONST_CAST2 (const char **, char **, ld2_argv);
+ object_lst = XCNEWVEC (char *, argc);
+ object = CONST_CAST2 (const char **, char **, object_lst);
#ifdef DEBUG
- debug = 1;
+ debug = true;
#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. */
+ save_temps = false;
+ verbose = false;
+
+#ifndef DEFAULT_A_OUT_NAME
+ output_file = "a.out";
+#else
+ output_file = DEFAULT_A_OUT_NAME;
+#endif
+
+ /* Parse command line / environment for flags we want early.
+ This allows the debug flag to be set before functions like find_a_file()
+ are called. */
{
- int i;
+ bool no_partition = false;
for (i = 1; argv[i] != NULL; i ++)
{
if (! strcmp (argv[i], "-debug"))
- debug = 1;
- }
- vflag = debug;
- }
+ debug = true;
+ else if (!strncmp (argv[i], "-fno-lto", 8))
+ lto_mode = LTO_MODE_NONE;
+ else if (! strcmp (argv[i], "-plugin"))
+ {
+ use_plugin = true;
+ if (selected_linker == USE_DEFAULT_LD)
+ selected_linker = USE_PLUGIN_LD;
+ }
+ else if (strcmp (argv[i], "-fuse-ld=bfd") == 0)
+ selected_linker = USE_BFD_LD;
+ else if (strcmp (argv[i], "-fuse-ld=gold") == 0)
+ selected_linker = USE_GOLD_LD;
+ else if (strcmp (argv[i], "-fuse-ld=lld") == 0)
+ selected_linker = USE_LLD_LD;
+ else if (strncmp (argv[i], "-o", 2) == 0)
+ {
+ /* Parse the output filename if it's given so that we can make
+ meaningful temp filenames. */
+ if (argv[i][2] == '\0')
+ output_file = argv[i+1];
+ else
+ output_file = &argv[i][2];
+ }
-#ifndef DEFAULT_A_OUT_NAME
- output_file = "a.out";
-#else
- output_file = DEFAULT_A_OUT_NAME;
+#ifdef COLLECT_EXPORT_LIST
+ /* These flags are position independent, although their order
+ is important - subsequent flags override earlier ones. */
+ else if (strcmp (argv[i], "-b64") == 0)
+ aix64_flag = 1;
+ /* -bexport:filename always needs the :filename */
+ else if (strncmp (argv[i], "-bE:", 4) == 0
+ || strncmp (argv[i], "-bexport:", 9) == 0)
+ export_flag = 1;
+ else if (strcmp (argv[i], "-brtl") == 0
+ || strcmp (argv[i], "-bsvr4") == 0
+ || strcmp (argv[i], "-G") == 0)
+ aixrtl_flag = 1;
+ else if (strcmp (argv[i], "-bnortl") == 0)
+ aixrtl_flag = 0;
+ else if (strcmp (argv[i], "-blazy") == 0)
+ aixlazy_flag = 1;
#endif
+ }
- obstack_begin (&temporary_obstack, 0);
- temporary_firstobj = (char *) obstack_alloc (&temporary_obstack, 0);
+ obstack_begin (&temporary_obstack, 0);
+ temporary_firstobj = (char *) 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++;
+
+ /* Now pick up any flags we want early from COLLECT_GCC_OPTIONS
+ The LTO options are passed here as are other options that might
+ be unsuitable for ld (e.g. -save-temps). */
+ 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++;
+ if (strncmp (q, "-flto-partition=none", 20) == 0)
+ no_partition = true;
+ else if (strncmp (q, "-fno-lto", 8) == 0)
+ lto_mode = LTO_MODE_NONE;
+ else if (strncmp (q, "-save-temps", 11) == 0)
+ /* FIXME: Honour =obj. */
+ save_temps = true;
}
- obstack_free (&temporary_obstack, temporary_firstobj);
+ obstack_free (&temporary_obstack, temporary_firstobj);
+
+ verbose = verbose || debug;
+ save_temps = save_temps || debug;
+ find_file_set_debug (debug);
+ if (use_plugin)
+ lto_mode = LTO_MODE_NONE;
+ if (no_partition && lto_mode == LTO_MODE_WHOPR)
+ lto_mode = LTO_MODE_LTO;
+ }
/* -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_ptr = (const char **) (c_argv = XCNEWVEC (char *, num_c_args));
+ c_argv = XCNEWVEC (char *, num_c_args);
+ c_ptr = CONST_CAST2 (const char **, char **, c_argv);
if (argc < 2)
- fatal ("no arguments");
+ fatal_error (input_location, "no arguments");
#ifdef SIGQUIT
if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
/* 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)
+ if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD ||
+ selected_linker == USE_LLD_LD)
+ {
+ char *linker_name;
+# ifdef HOST_EXECUTABLE_SUFFIX
+ int len = (sizeof (DEFAULT_LINKER)
+ - sizeof (HOST_EXECUTABLE_SUFFIX));
+ linker_name = NULL;
+ if (len > 0)
+ {
+ char *default_linker = xstrdup (DEFAULT_LINKER);
+ /* Strip HOST_EXECUTABLE_SUFFIX if DEFAULT_LINKER contains
+ HOST_EXECUTABLE_SUFFIX. */
+ if (! strcmp (&default_linker[len], HOST_EXECUTABLE_SUFFIX))
+ {
+ default_linker[len] = '\0';
+ linker_name = concat (default_linker,
+ &ld_suffixes[selected_linker][2],
+ HOST_EXECUTABLE_SUFFIX, NULL);
+ }
+ }
+ if (linker_name == NULL)
+# endif
+ linker_name = concat (DEFAULT_LINKER,
+ &ld_suffixes[selected_linker][2],
+ NULL);
+ if (access (linker_name, X_OK) == 0)
+ ld_file_name = linker_name;
+ }
+ if (ld_file_name == 0 && 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);
+ ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME, X_OK);
if (ld_file_name == 0)
#endif
/* Search the (target-specific) compiler dirs for ld'. */
- ld_file_name = find_a_file (&cpath, real_ld_suffix);
+ ld_file_name = find_a_file (&cpath, real_ld_suffix, X_OK);
/* Likewise for `collect-ld'. */
if (ld_file_name == 0)
- ld_file_name = find_a_file (&cpath, collect_ld_suffix);
+ {
+ ld_file_name = find_a_file (&cpath, collect_ld_suffix, X_OK);
+ use_collect_ld = ld_file_name != 0;
+ }
/* 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, ld_suffixes[selected_linker], X_OK);
/* 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, full_ld_suffixes[selected_linker], X_OK);
#ifdef REAL_NM_FILE_NAME
- nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
+ nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME, X_OK);
if (nm_file_name == 0)
#endif
- nm_file_name = find_a_file (&cpath, gnm_suffix);
+ nm_file_name = find_a_file (&cpath, gnm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&path, full_gnm_suffix);
+ nm_file_name = find_a_file (&path, full_gnm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&cpath, nm_suffix);
+ nm_file_name = find_a_file (&cpath, nm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&path, full_nm_suffix);
+ nm_file_name = find_a_file (&path, full_nm_suffix, X_OK);
#ifdef LDD_SUFFIX
- ldd_file_name = find_a_file (&cpath, ldd_suffix);
+ ldd_file_name = find_a_file (&cpath, ldd_suffix, X_OK);
if (ldd_file_name == 0)
- ldd_file_name = find_a_file (&path, full_ldd_suffix);
+ ldd_file_name = find_a_file (&path, full_ldd_suffix, X_OK);
#endif
#ifdef REAL_STRIP_FILE_NAME
- strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
+ strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME, X_OK);
if (strip_file_name == 0)
#endif
- strip_file_name = find_a_file (&cpath, gstrip_suffix);
+ strip_file_name = find_a_file (&cpath, gstrip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&path, full_gstrip_suffix);
+ strip_file_name = find_a_file (&path, full_gstrip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&cpath, strip_suffix);
+ strip_file_name = find_a_file (&cpath, strip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&path, full_strip_suffix);
+ strip_file_name = find_a_file (&path, full_strip_suffix, X_OK);
/* Determine the full path name of the C compiler to use. */
c_file_name = getenv ("COLLECT_GCC");
#endif
}
- p = find_a_file (&cpath, c_file_name);
+ p = find_a_file (&cpath, c_file_name, X_OK);
/* 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);
+ p = find_a_file (&path, c_file_name, X_OK);
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");
+ if (save_temps)
+ {
+ c_file = (char *) xmalloc (strlen (output_file)
+ + sizeof (".cdtor.c") + 1);
+ strcpy (c_file, output_file);
+ strcat (c_file, ".cdtor.c");
+ o_file = (char *) xmalloc (strlen (output_file)
+ + sizeof (".cdtor.o") + 1);
+ strcpy (o_file, output_file);
+ strcat (o_file, ".cdtor.o");
+ }
+ else
+ {
+ c_file = make_temp_file (".cdtor.c");
+ o_file = make_temp_file (".cdtor.o");
+ }
#ifdef COLLECT_EXPORT_LIST
export_file = make_temp_file (".x");
#endif
- ldout = make_temp_file (".ld");
- lderrout = make_temp_file (".le");
+ if (!debug)
+ {
+ ldout = make_temp_file (".ld");
+ lderrout = make_temp_file (".le");
+ }
+ /* Build the command line to compile the ctor/dtor list. */
*c_ptr++ = c_file_name;
*c_ptr++ = "-x";
*c_ptr++ = "c";
*c_ptr++ = xstrdup (q);
if (strcmp (q, "-shared") == 0)
shared_obj = 1;
+ if (strcmp (q, "-static") == 0)
+ static_obj = 1;
if (*q == '-' && q[1] == 'B')
{
*c_ptr++ = xstrdup (q);
*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.
/* Parse arguments. Remember output file spec, pass the rest to ld. */
/* After the first file, put in the c++ rt0. */
+#ifdef COLLECT_EXPORT_LIST
+ is_static = static_obj;
+#endif
first_file = 1;
-#ifdef HAVE_LD_DEMANGLE
- if (!demangle_flag && !no_demangle)
- demangle_flag = "--demangle";
- if (demangle_flag)
- *ld1++ = *ld2++ = demangle_flag;
+ while ((arg = *++argv) != (char *) 0)
+ {
+ *ld1++ = *ld2++ = arg;
+
+ if (arg[0] == '-')
+ {
+ switch (arg[1])
+ {
+ case 'd':
+ if (!strcmp (arg, "-debug"))
+ {
+ /* Already parsed. */
+ ld1--;
+ ld2--;
+ }
+ if (!strcmp (arg, "-dynamic-linker") && argv[1])
+ {
+ ++argv;
+ *ld1++ = *ld2++ = *argv;
+ }
+ break;
+
+ case 'f':
+ if (strncmp (arg, "-flto", 5) == 0)
+ {
+#ifdef ENABLE_LTO
+ /* Do not pass LTO flag to the linker. */
+ ld1--;
+ ld2--;
+#else
+ error ("LTO support has not been enabled in this "
+ "configuration");
+#endif
+ }
+ else if (!use_collect_ld
+ && strncmp (arg, "-fuse-ld=", 9) == 0)
+ {
+ /* Do not pass -fuse-ld={bfd|gold|lld} to the linker. */
+ ld1--;
+ ld2--;
+ }
+ else if (strncmp (arg, "-fno-lto", 8) == 0)
+ {
+ /* Do not pass -fno-lto to the linker. */
+ ld1--;
+ ld2--;
+ }
+#ifdef TARGET_AIX_VERSION
+ else
+ {
+ /* File containing a list of input files to process. */
+
+ FILE *stream;
+ char buf[MAXPATHLEN + 2];
+ /* Number of additionnal object files. */
+ int add_nbr = 0;
+ /* Maximum of additionnal object files before vector
+ expansion. */
+ int add_max = 0;
+ const char *list_filename = arg + 2;
+
+ /* Accept -fFILENAME and -f FILENAME. */
+ if (*list_filename == '\0' && argv[1])
+ {
+ ++argv;
+ list_filename = *argv;
+ *ld1++ = *ld2++ = *argv;
+ }
+
+ stream = fopen (list_filename, "r");
+ if (stream == NULL)
+ fatal_error (input_location, "cannot open %s: %m",
+ list_filename);
+
+ while (fgets (buf, sizeof buf, stream) != NULL)
+ {
+ /* Remove end of line. */
+ int len = strlen (buf);
+ if (len >= 1 && buf[len - 1] =='\n')
+ buf[len - 1] = '\0';
+
+ /* Put on object vector.
+ Note: we only expanse vector here, so we must keep
+ extra space for remaining arguments. */
+ if (add_nbr >= add_max)
+ {
+ int pos =
+ object - CONST_CAST2 (const char **, char **,
+ object_lst);
+ add_max = (add_max == 0) ? 16 : add_max * 2;
+ object_lst = XRESIZEVEC (char *, object_lst,
+ object_nbr + add_max);
+ object = CONST_CAST2 (const char **, char **,
+ object_lst) + pos;
+ object_nbr += add_max;
+ }
+ *object++ = xstrdup (buf);
+ add_nbr++;
+ }
+ fclose (stream);
+ }
#endif
- while ((arg = *++argv) != (char *) 0)
- {
- *ld1++ = *ld2++ = arg;
+ break;
- 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"))
+ if (!strcmp (arg, "-bstatic"))
{
- /* Already parsed. */
- ld1--;
- ld2--;
+ is_static = true;
}
- if (!strcmp (arg, "-dynamic-linker") && argv[1])
+ else if (!strcmp (arg, "-bdynamic") || !strcmp (arg, "-bshared"))
{
- ++argv;
- *ld1++ = *ld2++ = *argv;
+ is_static = false;
}
break;
-
+#endif
case 'l':
if (first_file)
{
/* Saving a full library name. */
add_to_list (&libs, s);
+ if (is_static)
+ add_to_list (&static_libs, s);
}
#endif
break;
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
- )
-
+ else
output_file = &arg[2];
break;
case 'v':
if (arg[2] == '\0')
- vflag = 1;
+ verbose = true;
break;
case '-':
if (strcmp (arg, "--no-demangle") == 0)
{
- demangle_flag = arg;
+#ifndef HAVE_LD_DEMANGLE
no_demangle = 1;
ld1--;
ld2--;
+#endif
}
else if (strncmp (arg, "--demangle", 10) == 0)
{
- demangle_flag = arg;
- no_demangle = 0;
#ifndef HAVE_LD_DEMANGLE
+ no_demangle = 0;
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);
+ error ("unknown demangling style %qs", arg+11);
else
current_demangling_style = style;
}
-#endif
ld1--;
ld2--;
+#endif
}
+ else if (strncmp (arg, "--sysroot=", 10) == 0)
+ target_system_root = arg + 10;
+ else if (strcmp (arg, "--version") == 0)
+ verbose = true;
+ else if (strcmp (arg, "--help") == 0)
+ helpflag = true;
break;
}
}
{
/* Saving a full library name. */
add_to_list (&libs, arg);
+ if (is_static)
+ add_to_list (&static_libs, arg);
}
#endif
}
{
fprintf (stderr, "List of libraries:\n");
dump_list (stderr, "\t", libs.first);
+ fprintf (stderr, "List of statically linked libraries:\n");
+ dump_list (stderr, "\t", static_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. */
+ nothing else in the file is referenced, so look at them first. Unless
+ we are building a shared object, ignore the eh frame tables, as we
+ would otherwise reference them all, hence drag all the corresponding
+ objects even if nothing else is referenced. */
{
- const char **export_object_lst = (const char **)object_lst;
+ const char **export_object_lst
+ = CONST_CAST2 (const char **, char **, object_lst);
- while (export_object_lst < object)
- scan_prog_file (*export_object_lst++, PASS_OBJ);
- }
- {
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 = ld1_filter;
+#if HAVE_AS_REF
+ if (!shared_obj)
+ this_filter &= ~SCAN_DWEH;
+#endif
+
+ /* Scan object files. */
+ while (export_object_lst < object)
+ scan_prog_file (*export_object_lst++, PASS_OBJ, this_filter);
+
+ /* Scan libraries. */
for (; list; list = list->next)
- scan_prog_file (list->name, PASS_FIRST);
+ scan_prog_file (list->name, PASS_FIRST, this_filter);
+
+ ld1_filter = ld1_filter & ~this_filter;
}
if (exports.first)
exportf = fopen (export_file, "w");
if (exportf == (FILE *) 0)
- fatal_perror ("fopen %s", export_file);
+ fatal_error (input_location, "fopen %s: %m", export_file);
write_aix_file (exportf, exports.first);
if (fclose (exportf))
- fatal_perror ("fclose %s", export_file);
+ fatal_error (input_location, "fclose %s: %m", export_file);
}
#endif
*c_ptr++ = c_file;
*c_ptr = *ld1 = *object = (char *) 0;
- if (vflag)
+ if (verbose)
+ notice ("collect2 version %s\n", version_string);
+
+ if (helpflag)
{
- notice ("collect2 version %s", version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
- fprintf (stderr, "\n");
+ printf ("Usage: collect2 [options]\n");
+ printf (" Wrap linker and generate constructor code if needed.\n");
+ printf (" Options:\n");
+ printf (" -debug Enable debug output\n");
+ printf (" --help Display this information\n");
+ printf (" -v, --version Display this program's version number\n");
+ printf ("\n");
+ printf ("Overview: https://gcc.gnu.org/onlinedocs/gccint/Collect2.html\n");
+ printf ("Report bugs: %s\n", bug_report_url);
+ printf ("\n");
}
if (debug)
}
/* Load the program, searching all libraries and attempting to provide
- undefined symbols from repository information. */
+ 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
+ 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. */
+ {
+ bool early_exit
+ = rflag || (! DO_COLLECT_EXPORT_LIST && ! do_collecting);
+
+ /* Perform the first pass link now, if we're about to exit or if we need
+ to scan for things we haven't collected yet before pursuing further.
+
+ On AIX, the latter typically includes nothing for shared objects or
+ frame tables for an executable, out of what the required early scan on
+ 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);
- /* But make sure we delete the export file we may have created. */
- if (export_file != 0 && export_file[0])
- maybe_unlink (export_file);
+ if (early_exit)
+ {
+#ifdef COLLECT_EXPORT_LIST
+ /* 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;
- }
+ if (lto_mode != LTO_MODE_NONE)
+ maybe_run_lto_and_relink (ld1_argv, object_lst, object, false);
+ else
+ post_ld_pass (/*temp_file*/false);
- /* 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. */
+ return 0;
+ }
+ }
- /* On AIX we already scanned for global constructors/destructors. */
-#ifndef COLLECT_EXPORT_LIST
- scan_prog_file (output_file, PASS_FIRST);
-#endif
+ /* Unless we have done it all already, examine the namelist and search for
+ static constructors and destructors to call. Write the constructor and
+ destructor tables to a .s file and reload. */
+
+ if (ld1_filter != SCAN_NOTHING)
+ scan_prog_file (output_file, PASS_FIRST, ld1_filter);
#ifdef SCAN_LIBRARIES
scan_libraries (output_file);
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
+ generate the glue code and relink so return now. */
+
if (constructors.number == 0 && destructors.number == 0
&& frame_tables.number == 0
#if defined (SCAN_LIBRARIES) || defined (COLLECT_EXPORT_LIST)
#endif
)
{
-#ifdef COLLECT_EXPORT_LIST
- /* Do tlink without additional code generation. */
- do_tlink (ld1_argv, object_lst);
-#endif
+ /* Do tlink without additional code generation now if we didn't
+ do it earlier for scanning purposes. */
+ if (ld1_filter == SCAN_NOTHING)
+ do_tlink (ld1_argv, object_lst);
+
+ if (lto_mode)
+ maybe_run_lto_and_relink (ld1_argv, object_lst, object, false);
+
/* 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;
+ const char ** strip_argv = CONST_CAST2 (const char **, 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);
+ fork_execute ("strip", real_strip_argv, false);
}
#ifdef COLLECT_EXPORT_LIST
maybe_unlink (export_file);
#endif
+ post_ld_pass (/*temp_file*/false);
+
maybe_unlink (c_file);
maybe_unlink (o_file);
return 0;
sort_ids (&constructors);
sort_ids (&destructors);
- maybe_unlink(output_file);
+ maybe_unlink (output_file);
outf = fopen (c_file, "w");
if (outf == (FILE *) 0)
- fatal_perror ("fopen %s", c_file);
+ fatal_error (input_location, "fopen %s: %m", c_file);
write_c_file (outf, c_file);
if (fclose (outf))
- fatal_perror ("fclose %s", c_file);
+ fatal_error (input_location, "fclose %s: %m", c_file);
/* Tell the linker that we have initializer and finalizer functions. */
#ifdef LD_INIT_SWITCH
if (! exports.first)
*ld2++ = concat ("-bE:", export_file, NULL);
+#ifdef TARGET_AIX_VERSION
+ add_to_list (&exports, aix_shared_initname);
+ add_to_list (&exports, aix_shared_fininame);
+#endif
+
#ifndef LD_INIT_SWITCH
add_to_list (&exports, initname);
add_to_list (&exports, fininame);
#endif
exportf = fopen (export_file, "w");
if (exportf == (FILE *) 0)
- fatal_perror ("fopen %s", export_file);
+ fatal_error (input_location, "fopen %s: %m", export_file);
write_aix_file (exportf, exports.first);
if (fclose (exportf))
- fatal_perror ("fclose %s", export_file);
+ fatal_error (input_location, "fclose %s: %m", export_file);
}
#endif
/* Assemble the constructor and destructor tables.
Link the tables in with the rest of the program. */
- fork_execute ("gcc", c_argv);
+ fork_execute ("gcc", c_argv, at_file_supplied);
#ifdef COLLECT_EXPORT_LIST
/* On AIX we must call tlink because of possible templates resolution. */
do_tlink (ld2_argv, object_lst);
+
+ if (lto_mode)
+ maybe_run_lto_and_relink (ld2_argv, object_lst, object, false);
#else
/* Otherwise, simply call ld because tlink is already done. */
- fork_execute ("ld", ld2_argv);
+ if (lto_mode)
+ maybe_run_lto_and_relink (ld2_argv, object_lst, object, true);
+ else
+ {
+ fork_execute ("ld", ld2_argv, HAVE_GNU_LD && at_file_supplied);
+ post_ld_pass (/*temp_file*/false);
+ }
/* 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);
+ scan_prog_file (output_file, PASS_SECOND, SCAN_ALL);
#endif
maybe_unlink (c_file);
}
\f
-/* Wait for a process to finish, and exit if a nonzero status is found. */
+/* Unlink FILE unless we are debugging or this is the output_file
+ and we may not unlink it. */
-int
-collect_wait (const char *prog, struct pex_obj *pex)
+void
+maybe_unlink (const char *file)
{
- int status;
-
- if (!pex_get_status (pex, 1, &status))
- fatal_perror ("can't get program status");
- pex_free (pex);
-
- if (status)
+ if (save_temps && file_exists (file))
{
- 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);
+ if (verbose)
+ notice ("[Leaving %s]\n", file);
+ return;
}
- 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);
- }
+ if (file == output_file && !may_unlink_output_file)
+ return;
- if (response_file)
- {
- unlink (response_file);
- response_file = NULL;
- }
+ unlink_if_ordinary (file);
}
-\f
-/* 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;
- char *response_arg = NULL;
- char *response_argv[3] ATTRIBUTE_UNUSED;
-
- if (HAVE_GNU_LD && at_file_supplied && argv[0] != NULL)
- {
- /* If using @file arguments, create a temporary file and put the
- contents of argv into it. Then change argv to an array corresponding
- to a single argument @FILE, where FILE is the temporary filename. */
-
- char **current_argv = argv + 1;
- char *argv0 = argv[0];
- int status;
- FILE *f;
-
- /* Note: we assume argv contains at least one element; this is
- checked above. */
-
- response_file = make_temp_file ("");
-
- f = fopen (response_file, "w");
-
- if (f == NULL)
- fatal ("could not open response file %s", response_file);
-
- status = writeargv (current_argv, f);
-
- if (status)
- fatal ("could not write to response file %s", response_file);
-
- status = fclose (f);
-
- if (EOF == status)
- fatal ("could not close response file %s", response_file);
-
- response_arg = concat ("@", response_file, NULL);
- response_argv[0] = argv0;
- response_argv[1] = response_arg;
- response_argv[2] = NULL;
-
- argv = response_argv;
- }
-
- 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);
- }
-
- if (response_arg)
- free (response_arg);
-
- return pex;
-}
+/* Call maybe_unlink on the NULL-terminated list, FILE_LIST. */
static void
-fork_execute (const char *prog, char **argv)
+maybe_unlink_list (char **file_list)
{
- struct pex_obj *pex;
-
- pex = collect_execute (prog, argv, NULL, NULL);
- do_wait (prog, pex);
-}
-\f
-/* Unlink a file unless we are debugging. */
+ char **tmp = file_list;
-static void
-maybe_unlink (const char *file)
-{
- if (!debug)
- unlink_if_ordinary (file);
- else
- notice ("[Leaving %s]\n", file);
+ while (*tmp)
+ maybe_unlink (*(tmp++));
}
\f
{
int pos = 0, pri;
+#ifdef TARGET_AIX_VERSION
+ /* Run dependent module initializers before any constructors in this
+ module. */
+ switch (is_ctor_dtor (name))
+ {
+ case SYM_AIXI:
+ case SYM_AIXD:
+ return INT_MIN;
+ default:
+ break;
+ }
+#endif
+
while (name[pos] == '_')
++pos;
pos += 10; /* strlen ("GLOBAL__X_") */
}
}
-#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)
{
}
return 0;
}
-#endif
#endif /* COLLECT_EXPORT_LIST */
/* Added for debugging purpose. */
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;
+ q = p = lbasename (output_file);
+
while (q)
{
q = strchr (q,'.');
}
else
{
- if (strncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0)
+ if (filename_ncmp (q, SHLIB_SUFFIX, strlen (SHLIB_SUFFIX)) == 0)
{
q += strlen (SHLIB_SUFFIX);
break;
initname = concat ("_GLOBAL__FI_", prefix, NULL);
fininame = concat ("_GLOBAL__FD_", prefix, NULL);
+#ifdef TARGET_AIX_VERSION
+ aix_shared_initname = concat ("_GLOBAL__AIXI_", prefix, NULL);
+ aix_shared_fininame = concat ("_GLOBAL__AIXD_", prefix, NULL);
+#endif
free (prefix);
/* Write the tables as C code. */
+ /* This count variable is used to prevent multiple calls to the
+ constructors/destructors.
+ This guard against multiple calls is important on AIX as the initfini
+ functions are deliberately invoked multiple times as part of the
+ mechanisms GCC uses to order constructors across different dependent
+ shared libraries (see config/rs6000/aix.h).
+ */
fprintf (stream, "static int count;\n");
fprintf (stream, "typedef void entry_pt();\n");
write_list_with_asm (stream, "extern entry_pt ", constructors.first);
fprintf (stream, " struct object *next;\n");
fprintf (stream, "};\n");
+ fprintf (stream, "extern void __register_frame_info_table_bases (void *, struct object *, void *tbase, void *dbase);\n");
fprintf (stream, "extern void __register_frame_info_table (void *, struct object *);\n");
fprintf (stream, "extern void *__deregister_frame_info (void *);\n");
+#ifdef TARGET_AIX_VERSION
+ fprintf (stream, "extern void *__gcc_unwind_dbase;\n");
+#endif
fprintf (stream, "static void reg_frame () {\n");
fprintf (stream, "\tstatic struct object ob;\n");
+#ifdef TARGET_AIX_VERSION
+ /* Use __gcc_unwind_dbase as the base address for data on AIX.
+ This might not be the start of the segment, signed offsets assumed.
+ */
+ fprintf (stream, "\t__register_frame_info_table_bases (frame_table, &ob, (void *)0, &__gcc_unwind_dbase);\n");
+#else
fprintf (stream, "\t__register_frame_info_table (frame_table, &ob);\n");
+#endif
fprintf (stream, "\t}\n");
fprintf (stream, "static void dereg_frame () {\n");
if (shared_obj)
{
- COLLECT_SHARED_INIT_FUNC(stream, initname);
- COLLECT_SHARED_FINI_FUNC(stream, fininame);
+ COLLECT_SHARED_INIT_FUNC (stream, initname);
+ COLLECT_SHARED_FINI_FUNC (stream, fininame);
}
}
\f
#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.
+/* Check to make sure the file is an LTO object file. */
+
+static int
+has_lto_section (void *data, const char *name ATTRIBUTE_UNUSED,
+ off_t offset ATTRIBUTE_UNUSED,
+ off_t length ATTRIBUTE_UNUSED)
+{
+ int *found = (int *) data;
+
+ if (strncmp (name, LTO_SECTION_NAME_PREFIX,
+ sizeof (LTO_SECTION_NAME_PREFIX) - 1) != 0)
+ {
+ if (strncmp (name, OFFLOAD_SECTION_NAME_PREFIX,
+ sizeof (OFFLOAD_SECTION_NAME_PREFIX) - 1) != 0)
+ return 1;
+ }
+
+ *found = 1;
+
+ /* Stop iteration. */
+ return 0;
+}
+
+static bool
+is_lto_object_file (const char *prog_name)
+{
+ const char *errmsg;
+ int err;
+ int found = 0;
+ off_t inoff = 0;
+ int infd = open (prog_name, O_RDONLY | O_BINARY);
+
+ if (infd == -1)
+ return false;
+
+ simple_object_read *inobj = simple_object_start_read (infd, inoff,
+ LTO_SEGMENT_NAME,
+ &errmsg, &err);
+ if (!inobj)
+ return false;
+
+ errmsg = simple_object_find_sections (inobj, has_lto_section,
+ (void *) &found, &err);
+ if (! errmsg && found)
+ return true;
+
+ if (errmsg)
+ fatal_error (0, "%s: %s", errmsg, xstrerror (err));
+ return false;
+}
- 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__. */
+/* Generic version to scan the name list of the loaded program for
+ the symbols g++ uses for static constructors and destructors. */
static void
-scan_prog_file (const char *prog_name, enum pass which_pass)
+scan_prog_file (const char *prog_name, scanpass which_pass,
+ scanfilter filter)
{
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;
+ const char **nm_argv = CONST_CAST2 (const char **, char**, real_nm_argv);
int argc = 0;
struct pex_obj *pex;
const char *errmsg;
if (which_pass == PASS_SECOND)
return;
+ /* LTO objects must be in a known format. This check prevents
+ us from accepting an archive containing LTO objects, which
+ gcc cannot currently handle. */
+ if (which_pass == PASS_LTOINFO)
+ {
+ if(is_lto_object_file (prog_name)) {
+ add_lto_object (<o_objects, prog_name);
+ }
+ return;
+ }
+
/* If we do not have an `nm', complain. */
if (nm_file_name == 0)
- fatal ("cannot find 'nm'");
+ fatal_error (input_location, "cannot find %<nm%>");
nm_argv[argc++] = nm_file_name;
if (NM_FLAGS[0] != '\0')
nm_argv[argc++] = (char *) 0;
/* Trace if needed. */
- if (vflag)
+ if (verbose)
{
const char **p_argv;
const char *str;
pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
if (pex == NULL)
- fatal_perror ("pex_init failed");
+ fatal_error (input_location, "%<pex_init%> failed: %m");
- errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, NULL, &err);
+ errmsg = pex_run (pex, 0, nm_file_name, real_nm_argv, NULL, HOST_BIT_BUCKET,
+ &err);
if (errmsg != NULL)
{
if (err != 0)
{
errno = err;
- fatal_perror (errmsg);
+ fatal_error (input_location, "%s: %m", _(errmsg));
}
else
- fatal (errmsg);
+ fatal_error (input_location, errmsg);
}
int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN);
inf = pex_read_output (pex, 0);
if (inf == NULL)
- fatal_perror ("can't open nm output");
+ fatal_error (input_location, "cannot open nm output: %m");
if (debug)
fprintf (stderr, "\nnm output with constructors/destructors.\n");
int ch, ch2;
char *name, *end;
+ if (debug)
+ fprintf (stderr, "\t%s\n", buf);
+
/* If it contains a constructor or destructor name, add the name
- to the appropriate list. */
+ to the appropriate list unless this is a kind of symbol we're
+ not supposed to even consider. */
for (p = buf; (ch = *p) != '\0' && ch != '\n' && ch != '_'; p++)
if (ch == ' ' && p[1] == 'U' && p[2] == ' ')
*end = '\0';
+
switch (is_ctor_dtor (name))
{
case SYM_CTOR:
+ if (! (filter & SCAN_CTOR))
+ break;
if (which_pass != PASS_LIB)
add_to_list (&constructors, name);
break;
case SYM_DTOR:
+ if (! (filter & SCAN_DTOR))
+ break;
if (which_pass != PASS_LIB)
add_to_list (&destructors, name);
break;
case SYM_INIT:
+ if (! (filter & SCAN_INIT))
+ break;
if (which_pass != PASS_LIB)
- fatal ("init function found in object %s", prog_name);
+ fatal_error (input_location, "init function found in object %s",
+ prog_name);
#ifndef LD_INIT_SWITCH
add_to_list (&constructors, name);
#endif
break;
case SYM_FINI:
+ if (! (filter & SCAN_FINI))
+ break;
if (which_pass != PASS_LIB)
- fatal ("fini function found in object %s", prog_name);
+ fatal_error (input_location, "fini function found in object %s",
+ prog_name);
#ifndef LD_FINI_SWITCH
add_to_list (&destructors, name);
#endif
break;
case SYM_DWEH:
+ if (! (filter & SCAN_DWEH))
+ break;
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)
void (*quit_handler) (int);
#endif
char *real_ldd_argv[4];
- const char **ldd_argv = (const char **) real_ldd_argv;
+ const char **ldd_argv = CONST_CAST2 (const char **, char **, real_ldd_argv);
int argc = 0;
struct pex_obj *pex;
const char *errmsg;
/* If we do not have an `ldd', complain. */
if (ldd_file_name == 0)
{
- error ("cannot find 'ldd'");
+ error ("cannot find %<ldd%>");
return;
}
ldd_argv[argc++] = (char *) 0;
/* Trace if needed. */
- if (vflag)
+ if (verbose)
{
const char **p_argv;
const char *str;
pex = pex_init (PEX_USE_PIPES, "collect2", NULL);
if (pex == NULL)
- fatal_perror ("pex_init failed");
+ fatal_error (input_location, "pex_init failed: %m");
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);
+ fatal_error (input_location, "%s: %m", _(errmsg));
}
else
- fatal (errmsg);
+ fatal_error (input_location, errmsg);
}
int_handler = (void (*) (int)) signal (SIGINT, SIG_IGN);
inf = pex_read_output (pex, 0);
if (inf == NULL)
- fatal_perror ("can't open ldd output");
+ fatal_error (input_location, "cannot open ldd output: %m");
if (debug)
notice ("\nldd output with constructors/destructors.\n");
name = p;
if (strncmp (name, "not found", sizeof ("not found") - 1) == 0)
- fatal ("dynamic dependency %s not found", buf);
+ fatal_error (input_location, "dynamic dependency %s not found", buf);
/* Find the end of the symbol name. */
for (end = p;
if (access (name, R_OK) == 0)
add_to_list (&libraries, name);
else
- fatal ("unable to open dynamic dependency '%s'", buf);
+ fatal_error (input_location, "unable to open dynamic dependency "
+ "%qs", buf);
if (debug)
fprintf (stderr, "\t%s\n", buf);
/* 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 */
#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_SYMBOLS(X) (HEADER (ldptr).f_nsyms)
# define GCC_SYMENT SYMENT
# if defined (C_WEAKEXT)
# define GCC_OK_SYMBOL(X) \
# define GCC_SYMZERO(X) 0
/* 0757 = U803XTOCMAGIC (AIX 4.3) and 0767 = U64_TOCMAGIC (AIX V5) */
-#ifdef _AIX51
+#if TARGET_AIX_VERSION >= 51
# define GCC_CHECK_HDR(X) \
- ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
- || (HEADER (X).f_magic == 0767 && aix64_flag))
+ (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+ || (HEADER (X).f_magic == 0767 && aix64_flag)) \
+ && !(HEADER (X).f_flags & F_LOADONLY))
#else
# define GCC_CHECK_HDR(X) \
- ((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
- || (HEADER (X).f_magic == 0757 && aix64_flag))
-#endif
-
+ (((HEADER (X).f_magic == U802TOCMAGIC && ! aix64_flag) \
+ || (HEADER (X).f_magic == 0757 && aix64_flag)) \
+ && !(HEADER (X).f_flags & F_LOADONLY))
#endif
#ifdef COLLECT_EXPORT_LIST
static int
ignore_library (const char *name)
{
- const char *const *p = &aix_std_libs[0];
- while (*p++ != NULL)
- if (! strcmp (name, *p)) return 1;
+ const char *const *p;
+ size_t length;
+
+ if (target_system_root[0] != '\0')
+ {
+ length = strlen (target_system_root);
+ if (strncmp (name, target_system_root, length) != 0)
+ return 0;
+ name += length;
+ }
+ for (p = &aix_std_libs[0]; *p != NULL; ++p)
+ if (strcmp (name, *p) == 0)
+ return 1;
return 0;
}
#endif /* COLLECT_EXPORT_LIST */
#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__. */
+ the symbols g++ uses for static constructors and destructors. */
static void
-scan_prog_file (const char *prog_name, enum pass which_pass)
+scan_prog_file (const char *prog_name, scanpass which_pass,
+ scanfilter filter)
{
LDFILE *ldptr = NULL;
int sym_index, sym_count;
if ((ldptr = ldopen (CONST_CAST (char *, prog_name), ldptr)) != NULL)
{
if (! MY_ISCOFF (HEADER (ldptr).f_magic))
- fatal ("%s: not a COFF file", prog_name);
+ fatal_error (input_location, "%s: not a COFF file", prog_name);
if (GCC_CHECK_HDR (ldptr))
{
switch (is_ctor_dtor (name))
{
+#if TARGET_AIX_VERSION
+ /* Add AIX shared library initalisers/finalisers
+ to the constructors/destructors list of the
+ current module. */
+ case SYM_AIXI:
+ if (! (filter & SCAN_CTOR))
+ break;
+ if (is_shared && !aixlazy_flag
+#ifdef COLLECT_EXPORT_LIST
+ && ! static_obj
+ && ! is_in_list (prog_name, static_libs.first)
+#endif
+ )
+ add_to_list (&constructors, name);
+ break;
+
+ case SYM_AIXD:
+ if (! (filter & SCAN_DTOR))
+ break;
+ if (is_shared && !aixlazy_flag)
+ add_to_list (&destructors, name);
+ break;
+#endif
+
case SYM_CTOR:
+ if (! (filter & SCAN_CTOR))
+ break;
if (! is_shared)
add_to_list (&constructors, name);
#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
break;
case SYM_DTOR:
+ if (! (filter & SCAN_DTOR))
+ break;
if (! is_shared)
add_to_list (&destructors, name);
#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
#ifdef COLLECT_EXPORT_LIST
case SYM_INIT:
+ if (! (filter & SCAN_INIT))
+ break;
#ifndef LD_INIT_SWITCH
if (is_shared)
add_to_list (&constructors, name);
break;
case SYM_FINI:
+ if (! (filter & SCAN_FINI))
+ break;
#ifndef LD_INIT_SWITCH
if (is_shared)
add_to_list (&destructors, name);
#endif
case SYM_DWEH:
+ if (! (filter & SCAN_DWEH))
+ break;
if (! is_shared)
add_to_list (&frame_tables, name);
#if defined (COLLECT_EXPORT_LIST) && !defined (LD_INIT_SWITCH)
provides an explicit export list. */
if (shared_obj && !is_shared
&& which_pass == PASS_OBJ && !export_flag)
- add_to_list (&exports, name);
+ {
+ /* Do not auto-export __dso_handle or
+ __gcc_unwind_dbase. They are required
+ to be local to each module. */
+ if (strcmp(name, "__dso_handle") != 0
+ && strcmp(name, "__gcc_unwind_dbase") != 0)
+ {
+ 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
}
}
}
}
else
{
- fatal ("%s: cannot open as COFF file", prog_name);
+ fatal_error (input_location, "%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);
+ (void) ldclose (ldptr);
#endif
}
#endif /* OBJECT_FORMAT_COFF */
if (libpaths[i]->max_len > l)
l = libpaths[i]->max_len;
- lib_buf = XNEWVEC (char, l + strlen(name) + 10);
+ lib_buf = XNEWVEC (char, l + strlen (name) + 10);
for (i = 0; libpaths[i]; i++)
{
for (; list; list = list->next)
{
/* The following lines are needed because path_prefix list
- may contain directories both with trailing '/' and
+ may contain directories both with trailing DIR_SEPARATOR and
without it. */
const char *p = "";
- if (list->prefix[strlen(list->prefix)-1] != '/')
+ if (!IS_DIR_SEPARATOR (list->prefix[strlen (list->prefix)-1]))
p = "/";
for (j = 0; j < 2; j++)
{
if (debug)
fprintf (stderr, "not found\n");
else
- fatal ("library lib%s not found", name);
+ fatal_error (input_location, "library lib%s not found", name);
return (NULL);
}
#endif /* COLLECT_EXPORT_LIST */
+
+#ifdef COLLECT_RUN_DSYMUTIL
+static int flag_dsym = false;
+static int flag_idsym = false;
+
+static void
+process_args (int *argcp, char **argv) {
+ int i, j;
+ int argc = *argcp;
+ for (i=0; i<argc; ++i)
+ {
+ if (strcmp (argv[i], "-dsym") == 0)
+ {
+ flag_dsym = true;
+ /* Remove the flag, as we handle all processing for it. */
+ j = i;
+ do
+ argv[j] = argv[j+1];
+ while (++j < argc);
+ --i;
+ argc = --(*argcp);
+ }
+ else if (strcmp (argv[i], "-idsym") == 0)
+ {
+ flag_idsym = true;
+ /* Remove the flag, as we handle all processing for it. */
+ j = i;
+ do
+ argv[j] = argv[j+1];
+ while (++j < argc);
+ --i;
+ argc = --(*argcp);
+ }
+ }
+}
+
+static void
+do_dsymutil (const char *output_file) {
+ const char *dsymutil = DSYMUTIL + 1;
+ struct pex_obj *pex;
+ char **real_argv = XCNEWVEC (char *, 3);
+ const char ** argv = CONST_CAST2 (const char **, char **,
+ real_argv);
+
+ argv[0] = dsymutil;
+ argv[1] = output_file;
+ argv[2] = (char *) 0;
+
+ pex = collect_execute (dsymutil, real_argv, NULL, NULL,
+ PEX_LAST | PEX_SEARCH, false);
+ do_wait (dsymutil, pex);
+}
+
+static void
+post_ld_pass (bool temp_file) {
+ if (!(temp_file && flag_idsym) && !flag_dsym)
+ return;
+
+ do_dsymutil (output_file);
+}
+#else
+static void
+process_args (int *argcp ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) { }
+static void post_ld_pass (bool temp_file ATTRIBUTE_UNUSED) { }
+#endif
projects / thirdparty / gcc.git / blobdiff