Merge branch 'baseline' into refs/top-bases/tschwinge/Roger_Whittaker

Conflicts:
	sysdeps/mach/hurd/i386/init-first.c
	sysdeps/unix/sysv/linux/ldsodefs.h

30 files changed, 225 insertions, 141 deletions

diff --git a/elf/Makefile b/elf/Makefile
index c01ca9ef68..3b58649de5 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -145,7 +145,7 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
 	 tst-audit1 tst-audit2 tst-audit8 \
 	 tst-stackguard1 tst-addr1 tst-thrlock \
 	 tst-unique1 tst-unique2 tst-unique3 tst-unique4 \
-	 tst-initorder tst-initorder2 tst-relsort1
+	 tst-initorder tst-initorder2 tst-relsort1 tst-null-argv
 #	 reldep9
 test-srcs = tst-pathopt
 selinux-enabled := $(shell cat /selinux/enforce 2> /dev/null)
@@ -208,7 +208,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
 		tst-initorder2a tst-initorder2b tst-initorder2c \
 		tst-initorder2d \
 		tst-relsort1mod1 tst-relsort1mod2 tst-array2dep \
-		tst-array5dep
+		tst-array5dep tst-null-argv-lib
 ifeq (yesyes,$(have-fpie)$(build-shared))
 modules-names += tst-piemod1
 tests += tst-pie1
@@ -318,13 +318,16 @@ generated += librtld.map librtld.mk rtld-libc.a librtld.os.map
 z-now-yes = -Wl,-z,now
 
 $(objpfx)ld.so: $(objpfx)librtld.os $(ld-map)
-	$(LINK.o) -nostdlib -nostartfiles -shared -o $@			\
+# Link into a temporary file so that we don't touch $@ at all
+# if the sanity check below fails.
+	$(LINK.o) -nostdlib -nostartfiles -shared -o $@.new		\
 		  $(LDFLAGS-rtld) -Wl,-z,defs $(z-now-$(bind-now))	\
 		  $(filter-out $(map-file),$^) $(load-map-file)		\
 		  -Wl,-soname=$(rtld-installed-name)			\
 		  -Wl,-defsym=_begin=0
-	$(READELF) -s $@ \
+	$(READELF) -s $@.new \
 	  | $(AWK) '($$7 ~ /^UND(|EF)$$/ && $$1 != "0:" && $$4 != "REGISTER") { print; p=1 } END { exit p != 0 }'
+	mv -f $@.new $@
 
 # interp.c exists just to get this string into the libraries.
 CFLAGS-interp.c = -D'RUNTIME_LINKER="$(rtlddir)/$(rtld-installed-name)"' \
@@ -494,7 +497,9 @@ $(objpfx)tst-initorderb2.so: $(objpfx)tst-initorderb1.so $(objpfx)tst-initordera
 $(objpfx)tst-initordera3.so: $(objpfx)tst-initorderb2.so $(objpfx)tst-initorderb1.so
 $(objpfx)tst-initordera4.so: $(objpfx)tst-initordera3.so
 $(objpfx)tst-initorder: $(objpfx)tst-initordera4.so $(objpfx)tst-initordera1.so $(objpfx)tst-initorderb2.so
+$(objpfx)tst-null-argv: $(objpfx)tst-null-argv-lib.so
 
+tst-null-argv-ENV = LD_DEBUG=all LD_DEBUG_OUTPUT=$(objpfx)tst-null-argv.debug.out
 LDFLAGS-nodel2mod3.so = $(no-as-needed)
 LDFLAGS-reldepmod5.so = $(no-as-needed)
 LDFLAGS-reldep6mod1.so = $(no-as-needed)
diff --git a/elf/dl-conflict.c b/elf/dl-conflict.c
index d63086d99c..11e3cd8773 100644
--- a/elf/dl-conflict.c
+++ b/elf/dl-conflict.c
@@ -33,8 +33,7 @@ _dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict,
 {
 #if ! ELF_MACHINE_NO_RELA
   if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_RELOC, 0))
-    _dl_debug_printf ("\nconflict processing: %s\n",
-		      l->l_name[0] ? l->l_name : rtld_progname);
+    _dl_debug_printf ("\nconflict processing: %s\n", DSO_FILENAME (l->l_name));
 
   {
     /* Do the conflict relocation of the object and library GOT and other
diff --git a/elf/dl-deps.c b/elf/dl-deps.c
index cd1c236b2e..1c36f501bc 100644
--- a/elf/dl-deps.c
+++ b/elf/dl-deps.c
@@ -310,8 +310,7 @@ _dl_map_object_deps (struct link_map *map,
 		      _dl_debug_printf ("load auxiliary object=%s"
 					" requested by file=%s\n",
 					name,
-					l->l_name[0]
-					? l->l_name : rtld_progname);
+					DSO_FILENAME (l->l_name));
 
 		    /* We must be prepared that the addressed shared
 		       object is not available.  */
@@ -337,8 +336,7 @@ _dl_map_object_deps (struct link_map *map,
 		      _dl_debug_printf ("load filtered object=%s"
 					" requested by file=%s\n",
 					name,
-					l->l_name[0]
-					? l->l_name : rtld_progname);
+					DSO_FILENAME (l->l_name));
 
 		    /* For filter objects the dependency must be available.  */
 		    bool malloced;
diff --git a/elf/dl-dst.h b/elf/dl-dst.h
index 20b68d90b6..3ed95d02d5 100644
--- a/elf/dl-dst.h
+++ b/elf/dl-dst.h
@@ -55,7 +55,6 @@
 	   First get the origin string if it is not available yet.	      \
 	   This can only happen for the map of the executable or, when	      \
 	   auditing, in ld.so.  */					      \
-	DL_DST_REQ_STATIC (l)						      \
 	if ((l)->l_origin == NULL)					      \
 	  {								      \
 	    assert ((l)->l_name[0] == '\0' || IS_RTLD (l));		      \
@@ -73,15 +72,3 @@
       }									      \
 									      \
     __len; })
-
-#ifdef SHARED
-# define DL_DST_REQ_STATIC(l) /* nothing */
-#else
-# define DL_DST_REQ_STATIC(l) \
-  if ((l) == NULL)							      \
-    {									      \
-      const char *origin = _dl_get_origin ();				      \
-      dst_len = (origin && origin != (char *) -1 ? strlen (origin) : 0);      \
-    }									      \
-  else
-#endif
diff --git a/elf/dl-error.c b/elf/dl-error.c
index 798784543b..8257c17030 100644
--- a/elf/dl-error.c
+++ b/elf/dl-error.c
@@ -119,7 +119,7 @@ _dl_signal_error (int errcode, const char *objname, const char *occation,
       /* Lossage while resolving the program's own symbols is always fatal.  */
       char buffer[1024];
       _dl_fatal_printf ("%s: %s: %s%s%s%s%s\n",
-			rtld_progname ?: "<program name unknown>",
+			RTLD_PROGNAME,
 			occation ?: N_("error while loading shared libraries"),
 			objname, *objname ? ": " : "",
 			errstring, errcode ? ": " : "",
diff --git a/elf/dl-fini.c b/elf/dl-fini.c
index c5d1674aa4..6b245f0022 100644
--- a/elf/dl-fini.c
+++ b/elf/dl-fini.c
@@ -237,7 +237,7 @@ _dl_fini (void)
 		  if (__builtin_expect (GLRO(dl_debug_mask)
 					& DL_DEBUG_IMPCALLS, 0))
 		    _dl_debug_printf ("\ncalling fini: %s [%lu]\n\n",
-				      l->l_name[0] ? l->l_name : rtld_progname,
+				      DSO_FILENAME (l->l_name),
 				      ns);
 
 		  /* First see whether an array is given.  */
diff --git a/elf/dl-init.c b/elf/dl-init.c
index fe4d2a07da..a657eb6c40 100644
--- a/elf/dl-init.c
+++ b/elf/dl-init.c
@@ -54,7 +54,7 @@ call_init (struct link_map *l, int argc, char **argv, char **env)
   /* Print a debug message if wanted.  */
   if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
     _dl_debug_printf ("\ncalling init: %s\n\n",
-		      l->l_name[0] ? l->l_name : rtld_progname);
+		      DSO_FILENAME (l->l_name));
 
   /* Now run the local constructors.  There are two forms of them:
      - the one named by DT_INIT
@@ -110,8 +110,7 @@ _dl_init (struct link_map *main_map, int argc, char **argv, char **env)
 
       if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
 	_dl_debug_printf ("\ncalling preinit: %s\n\n",
-			  main_map->l_name[0]
-			  ? main_map->l_name : rtld_progname);
+			  DSO_FILENAME (main_map->l_name));
 
       addrs = (ElfW(Addr) *) (preinit_array->d_un.d_ptr + main_map->l_addr);
       for (cnt = 0; cnt < i; ++cnt)
diff --git a/elf/dl-load.c b/elf/dl-load.c
index dd182c9155..6a73f27345 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -324,7 +324,7 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
   const char *const start = name;
 
   /* Now fill the result path.  While copying over the string we keep
-     track of the start of the last path element.  When we come accross
+     track of the start of the last path element.  When we come across
      a DST we copy over the value or (if the value is not available)
      leave the entire path element out.  */
   char *wp = result;
@@ -342,13 +342,7 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
 	  if ((len = is_dst (start, name, "ORIGIN", is_path,
 			     INTUSE(__libc_enable_secure))) != 0)
 	    {
-#ifndef SHARED
-	      if (l == NULL)
-		repl = _dl_get_origin ();
-	      else
-#endif
-		repl = l->l_origin;
-
+	      repl = l->l_origin;
 	      check_for_trusted = (INTUSE(__libc_enable_secure)
 				   && l->l_type == lt_executable);
 	    }
@@ -1493,7 +1487,11 @@ cannot allocate TLS data structures for initial thread");
 	  if (__builtin_expect (p + s <= relro_end, 1))
 	    {
 	      /* The variable lies in the region protected by RELRO.  */
-	      __mprotect ((void *) p, s, PROT_READ|PROT_WRITE);
+	      if (__mprotect ((void *) p, s, PROT_READ|PROT_WRITE) < 0)
+		{
+		  errstring = N_("cannot change memory protections");
+		  goto call_lose_errno;
+		}
 	      __stack_prot |= PROT_READ|PROT_WRITE|PROT_EXEC;
 	      __mprotect ((void *) p, s, PROT_READ);
 	    }
@@ -1651,7 +1649,7 @@ print_search_path (struct r_search_path_elem **list,
 
   if (name != NULL)
     _dl_debug_printf_c ("\t\t(%s from file %s)\n", what,
-			name[0] ? name : rtld_progname);
+			DSO_FILENAME (name));
   else
     _dl_debug_printf_c ("\t\t(%s)\n", what);
 }
@@ -2124,8 +2122,7 @@ _dl_map_object (struct link_map *loader, const char *name,
     _dl_debug_printf ((mode & __RTLD_CALLMAP) == 0
 		      ? "\nfile=%s [%lu];  needed by %s [%lu]\n"
 		      : "\nfile=%s [%lu];  dynamically loaded by %s [%lu]\n",
-		      name, nsid, loader->l_name[0]
-		      ? loader->l_name : rtld_progname, loader->l_ns);
+		      name, nsid, DSO_FILENAME (loader->l_name), loader->l_ns);
 
 #ifdef SHARED
   /* Give the auditing libraries a chance to change the name before we
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
index 68f8daccb9..39f463eae1 100644
--- a/elf/dl-lookup.c
+++ b/elf/dl-lookup.c
@@ -112,8 +112,7 @@ do_lookup_x (const char *undef_name, uint_fast32_t new_hash,
       /* Print some debugging info if wanted.  */
       if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_SYMBOLS, 0))
 	_dl_debug_printf ("symbol=%s;  lookup in file=%s [%lu]\n",
-			  undef_name,
-			  map->l_name[0] ? map->l_name : rtld_progname,
+			  undef_name, DSO_FILENAME (map->l_name),
 			  map->l_ns);
 
       /* If the hash table is empty there is nothing to do here.  */
@@ -667,10 +666,9 @@ add_dependency (struct link_map *undef_map, struct link_map *map, int flags)
       if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0))
 	_dl_debug_printf ("\
 \nfile=%s [%lu];  needed by %s [%lu] (relocation dependency)\n\n",
-			  map->l_name[0] ? map->l_name : rtld_progname,
+			  DSO_FILENAME (map->l_name),
 			  map->l_ns,
-			  undef_map->l_name[0]
-			  ? undef_map->l_name : rtld_progname,
+			  DSO_FILENAME (undef_map->l_name),
 			  undef_map->l_ns);
     }
   else
@@ -751,9 +749,7 @@ _dl_lookup_symbol_x (const char *undef_name, struct link_map *undef_map,
 	  const char *reference_name = undef_map ? undef_map->l_name : NULL;
 
 	  /* XXX We cannot translate the message.  */
-	  _dl_signal_cerror (0, (reference_name[0]
-				 ? reference_name
-				 : (rtld_progname ?: "<main program>")),
+	  _dl_signal_cerror (0, DSO_FILENAME (reference_name),
 			     N_("relocation error"),
 			     make_string ("symbol ", undef_name, ", version ",
 					  version->name,
@@ -780,9 +776,7 @@ _dl_lookup_symbol_x (const char *undef_name, struct link_map *undef_map,
 				     ? version->name : "");
 
 	  /* XXX We cannot translate the message.  */
-	  _dl_signal_cerror (0, (reference_name[0]
-				 ? reference_name
-				 : (rtld_progname ?: "<main program>")),
+	  _dl_signal_cerror (0, DSO_FILENAME (reference_name),
 			     N_("symbol lookup error"),
 			     make_string (undefined_msg, undef_name,
 					  versionstr, versionname));
@@ -912,11 +906,9 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map,
   if (GLRO(dl_debug_mask) & DL_DEBUG_BINDINGS)
     {
       _dl_debug_printf ("binding file %s [%lu] to %s [%lu]: %s symbol `%s'",
-			(reference_name[0]
-			 ? reference_name
-			 : (rtld_progname ?: "<main program>")),
+			DSO_FILENAME (reference_name),
 			undef_map->l_ns,
-			value->m->l_name[0] ? value->m->l_name : rtld_progname,
+			DSO_FILENAME (value->m->l_name),
 			value->m->l_ns,
 			protected ? "protected" : "normal", undef_name);
       if (version)
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 92fae7f59b..1403c8c091 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -158,7 +158,7 @@ add_to_global (struct link_map *new)
   return 0;
 }
 
-/* Search link maps in all namespaces for the DSO that containes the object at
+/* Search link maps in all namespaces for the DSO that contains the object at
    address ADDR.  Returns the pointer to the link map of the matching DSO, or
    NULL if a match is not found.  */
 struct link_map *
@@ -204,11 +204,9 @@ dl_open_worker (void *a)
     {
       const void *caller_dlopen = args->caller_dlopen;
 
-#ifdef SHARED
       /* We have to find out from which object the caller is calling.
 	 By default we assume this is the main application.  */
       call_map = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
-#endif
 
       struct link_map *l = _dl_find_dso_for_object ((ElfW(Addr)) caller_dlopen);
 
@@ -216,15 +214,7 @@ dl_open_worker (void *a)
         call_map = l;
 
       if (args->nsid == __LM_ID_CALLER)
-	{
-#ifndef SHARED
-	  /* In statically linked apps there might be no loaded object.  */
-	  if (call_map == NULL)
-	    args->nsid = LM_ID_BASE;
-	  else
-#endif
-	    args->nsid = call_map->l_ns;
-	}
+	args->nsid = call_map->l_ns;
     }
 
   assert (_dl_debug_initialize (0, args->nsid)->r_state == RT_CONSISTENT);
@@ -406,7 +396,7 @@ dl_open_worker (void *a)
 	  /* If this here is the shared object which we want to profile
 	     make sure the profile is started.  We can find out whether
 	     this is necessary or not by observing the `_dl_profile_map'
-	     variable.  If it was NULL but is not NULL afterwars we must
+	     variable.  If it was NULL but is not NULL afterwards we must
 	     start the profiling.  */
 	  struct link_map *old_profile_map = GL(dl_profile_map);
 
@@ -568,6 +558,10 @@ cannot load any more object with static TLS"));
   if (relocation_in_progress)
     LIBC_PROBE (reloc_complete, 3, args->nsid, r, new);
 
+#ifndef SHARED
+  DL_STATIC_INIT (new);
+#endif
+
   /* Run the initializer functions of new objects.  */
   _dl_init (new, args->argc, args->argv, args->env);
 
@@ -638,12 +632,6 @@ no more namespaces available for dlmopen()"));
 	       || GL(dl_ns)[nsid]._ns_loaded->l_auditing))
     _dl_signal_error (EINVAL, file, NULL,
 		      N_("invalid target namespace in dlmopen()"));
-#ifndef SHARED
-  else if ((nsid == LM_ID_BASE || nsid == __LM_ID_CALLER)
-	   && GL(dl_ns)[LM_ID_BASE]._ns_loaded == NULL
-	   && GL(dl_nns) == 0)
-    GL(dl_nns) = 1;
-#endif
 
   struct dl_open_args args;
   args.file = file;
@@ -721,10 +709,6 @@ no more namespaces available for dlmopen()"));
   /* Release the lock.  */
   __rtld_lock_unlock_recursive (GL(dl_load_lock));
 
-#ifndef SHARED
-  DL_STATIC_INIT (args.map);
-#endif
-
   return args.map;
 }
 
@@ -733,7 +717,7 @@ void
 _dl_show_scope (struct link_map *l, int from)
 {
   _dl_debug_printf ("object=%s [%lu]\n",
-		    *l->l_name ? l->l_name : rtld_progname, l->l_ns);
+		    DSO_FILENAME (l->l_name), l->l_ns);
   if (l->l_scope != NULL)
     for (int scope_cnt = from; l->l_scope[scope_cnt] != NULL; ++scope_cnt)
       {
@@ -744,7 +728,7 @@ _dl_show_scope (struct link_map *l, int from)
 	    _dl_debug_printf_c (" %s",
 				l->l_scope[scope_cnt]->r_list[cnt]->l_name);
 	  else
-	    _dl_debug_printf_c (" %s", rtld_progname);
+	    _dl_debug_printf_c (" %s", RTLD_PROGNAME);
 
 	_dl_debug_printf_c ("\n");
       }
diff --git a/elf/dl-profile.c b/elf/dl-profile.c
index 9034be229a..8fa6efca42 100644
--- a/elf/dl-profile.c
+++ b/elf/dl-profile.c
@@ -131,7 +131,18 @@ struct here_cg_arc_record
   {
     uintptr_t from_pc;
     uintptr_t self_pc;
-    uint32_t count;
+    /* The count field is atomically incremented in _dl_mcount, which
+       requires it to be properly aligned for its type, and for this
+       alignment to be visible to the compiler.  The amount of data
+       before an array of this structure is calculated as
+       expected_size in _dl_start_profile.  Everything in that
+       calculation is a multiple of 4 bytes (in the case of
+       kcountsize, because it is derived from a subtraction of
+       page-aligned values, and the corresponding calculation in
+       __monstartup also ensures it is at least a multiple of the size
+       of u_long), so all copies of this field do in fact have the
+       appropriate alignment.  */
+    uint32_t count __attribute__ ((aligned (__alignof__ (uint32_t))));
   } __attribute__ ((packed));
 
 static struct here_cg_arc_record *data;
diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c
index 73d98f8c2e..5c5431098c 100644
--- a/elf/dl-reloc.c
+++ b/elf/dl-reloc.c
@@ -185,8 +185,7 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
 
   if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_RELOC, 0))
     _dl_debug_printf ("\nrelocation processing: %s%s\n",
-		      l->l_name[0] ? l->l_name : rtld_progname,
-		      lazy ? " (lazy)" : "");
+		      DSO_FILENAME (l->l_name), lazy ? " (lazy)" : "");
 
   /* DT_TEXTREL is now in level 2 and might phase out at some time.
      But we rewrite the DT_FLAGS entry to a DT_TEXTREL entry to make
@@ -276,7 +275,7 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
 	    errstring = N_("%s: no PLTREL found in object %s\n");
 	  fatal:
 	    _dl_fatal_printf (errstring,
-			      rtld_progname ?: "<program name unknown>",
+			      RTLD_PROGNAME,
 			      l->l_name);
 	  }
 
diff --git a/elf/dl-support.c b/elf/dl-support.c
index a793fe6868..e551078df1 100644
--- a/elf/dl-support.c
+++ b/elf/dl-support.c
@@ -70,17 +70,52 @@ const char *_dl_origin_path;
 /* Nonzero if runtime lookup should not update the .got/.plt.  */
 int _dl_bind_not;
 
+/* A dummy link map for the executable, used by dlopen to access the global
+   scope.  We don't export any symbols ourselves, so this can be minimal.  */
+static struct link_map _dl_main_map =
+  {
+    .l_name = (char *) "",
+    .l_real = &_dl_main_map,
+    .l_ns = LM_ID_BASE,
+    .l_libname = &(struct libname_list) { .name = "", .dont_free = 1 },
+    .l_searchlist =
+      {
+	.r_list = &(struct link_map *) { &_dl_main_map },
+	.r_nlist = 1,
+      },
+    .l_symbolic_searchlist = { .r_list = &(struct link_map *) { NULL } },
+    .l_type = lt_executable,
+    .l_scope_mem = { &_dl_main_map.l_searchlist },
+    .l_scope_max = (sizeof (_dl_main_map.l_scope_mem)
+		    / sizeof (_dl_main_map.l_scope_mem[0])),
+    .l_scope = _dl_main_map.l_scope_mem,
+    .l_local_scope = { &_dl_main_map.l_searchlist },
+    .l_used = 1,
+    .l_tls_offset = NO_TLS_OFFSET,
+    .l_serial = 1,
+  };
+
 /* Namespace information.  */
-struct link_namespaces _dl_ns[DL_NNS];
-size_t _dl_nns;
+struct link_namespaces _dl_ns[DL_NNS] =
+  {
+    [LM_ID_BASE] =
+      {
+	._ns_loaded = &_dl_main_map,
+	._ns_nloaded = 1,
+	._ns_main_searchlist = &_dl_main_map.l_searchlist,
+      }
+  };
+size_t _dl_nns = 1;
 
 /* Incremented whenever something may have been added to dl_loaded. */
-unsigned long long _dl_load_adds;
+unsigned long long _dl_load_adds = 1;
 
-/* Fake scope.  In dynamically linked binaries this is the scope of the
-   main application but here we don't have something like this.  So
-   create a fake scope containing nothing.  */
-struct r_scope_elem _dl_initial_searchlist;
+/* Fake scope of the main application.  */
+struct r_scope_elem _dl_initial_searchlist =
+  {
+    .r_list = &(struct link_map *) { &_dl_main_map },
+    .r_nlist = 1,
+  };
 
 #ifndef HAVE_INLINED_SYSCALLS
 /* Nonzero during startup.  */
@@ -130,6 +165,7 @@ ElfW(auxv_t) *_dl_auxv;
 const ElfW(Phdr) *_dl_phdr;
 size_t _dl_phnum;
 uint64_t _dl_hwcap __attribute__ ((nocommon));
+uint64_t _dl_hwcap2 __attribute__ ((nocommon));
 
 /* This is not initialized to HWCAP_IMPORTANT, matching the definition
    of _dl_important_hwcaps, below, where no hwcap strings are ever
@@ -215,6 +251,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
       case AT_HWCAP:
 	GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
 	break;
+      case AT_HWCAP2:
+	GLRO(dl_hwcap2) = (unsigned long int) av->a_un.a_val;
+	break;
 #ifdef NEED_DL_SYSINFO
       case AT_SYSINFO:
 	GL(dl_sysinfo) = av->a_un.a_val;
@@ -266,6 +305,8 @@ void
 internal_function
 _dl_non_dynamic_init (void)
 {
+  _dl_main_map.l_origin = _dl_get_origin ();
+
   if (HP_TIMING_AVAIL)
     HP_TIMING_NOW (_dl_cpuclock_offset);
 
diff --git a/elf/dl-sysdep.c b/elf/dl-sysdep.c
index 52de23f44b..08c74ef83b 100644
--- a/elf/dl-sysdep.c
+++ b/elf/dl-sysdep.c
@@ -156,6 +156,9 @@ _dl_sysdep_start (void **start_argptr,
       case AT_HWCAP:
 	GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
 	break;
+      case AT_HWCAP2:
+	GLRO(dl_hwcap2) = (unsigned long int) av->a_un.a_val;
+	break;
       case AT_CLKTCK:
 	GLRO(dl_clktck) = av->a_un.a_val;
 	break;
@@ -303,6 +306,7 @@ _dl_show_auxv (void)
 	  [AT_SYSINFO - 2] =		{ "SYSINFO:      0x", hex },
 	  [AT_SYSINFO_EHDR - 2] =	{ "SYSINFO_EHDR: 0x", hex },
 	  [AT_RANDOM - 2] =		{ "RANDOM:       0x", hex },
+	  [AT_HWCAP2 - 2] =		{ "HWCAP2:       0x", hex },
 	};
       unsigned int idx = (unsigned int) (av->a_type - 2);
 
@@ -314,10 +318,10 @@ _dl_show_auxv (void)
       assert (AT_NULL == 0);
       assert (AT_IGNORE == 1);
 
-      if (av->a_type == AT_HWCAP)
+      if (av->a_type == AT_HWCAP || av->a_type == AT_HWCAP2)
 	{
-	  /* This is handled special.  */
-	  if (_dl_procinfo (av->a_un.a_val) == 0)
+	  /* These are handled in a special way per platform.  */
+	  if (_dl_procinfo (av->a_type, av->a_un.a_val) == 0)
 	    continue;
 	}
 
diff --git a/elf/dl-version.c b/elf/dl-version.c
index c02baa0600..62be4aef75 100644
--- a/elf/dl-version.c
+++ b/elf/dl-version.c
@@ -85,7 +85,7 @@ match_symbol (const char *name, Lmid_t ns, ElfW(Word) hash, const char *string,
   if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_VERSIONS, 0))
     _dl_debug_printf ("\
 checking for version `%s' in file %s [%lu] required by file %s [%lu]\n",
-		      string, map->l_name[0] ? map->l_name : rtld_progname,
+		      string, DSO_FILENAME (map->l_name),
 		      map->l_ns, name, ns);
 
   if (__builtin_expect (map->l_info[VERSYMIDX (DT_VERDEF)] == NULL, 0))
@@ -162,7 +162,7 @@ no version information available (required by ", name, ")");
 			   name, ")");
   result = 1;
  call_cerror:
-  _dl_signal_cerror (0, map->l_name[0] ? map->l_name : rtld_progname,
+  _dl_signal_cerror (0, DSO_FILENAME (map->l_name),
 		     N_("version lookup error"), errstring);
   return result;
 }
@@ -210,7 +210,7 @@ _dl_check_map_versions (struct link_map *map, int verbose, int trace_mode)
 					  &buf[sizeof (buf) - 1], 10, 0),
 				   " of Verneed record\n");
 	call_error:
-	  _dl_signal_error (errval, *map->l_name ? map->l_name : rtld_progname,
+	  _dl_signal_error (errval, DSO_FILENAME (map->l_name),
 			    NULL, errstring);
 	}
 
@@ -234,8 +234,7 @@ _dl_check_map_versions (struct link_map *map, int verbose, int trace_mode)
 	      while (1)
 		{
 		  /* Match the symbol.  */
-		  result |= match_symbol ((*map->l_name
-					   ? map->l_name : rtld_progname),
+		  result |= match_symbol (DSO_FILENAME (map->l_name),
 					  map->l_ns, aux->vna_hash,
 					  strtab + aux->vna_name,
 					  needed->l_real, verbose,
diff --git a/elf/elf.h b/elf/elf.h
index 4ad4f39999..fe55c928cd 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -811,7 +811,7 @@ typedef struct
 #define	DF_1_EDITED	0x00200000	/* Object is modified after built.  */
 #define	DF_1_NORELOC	0x00400000
 #define	DF_1_SYMINTPOSE	0x00800000	/* Object has individual interposers.  */
-#define	DF_1_GLOBAUDIT	0x01000000	/* Global auditin required.  */
+#define	DF_1_GLOBAUDIT	0x01000000	/* Global auditing required.  */
 #define	DF_1_SINGLETON	0x02000000	/* Singleton symbols are used.  */
 
 /* Flags for the feature selection in DT_FEATURE_1.  */
@@ -993,7 +993,7 @@ typedef struct
 
 /* Some more special a_type values describing the hardware.  */
 #define AT_PLATFORM	15		/* String identifying platform.  */
-#define AT_HWCAP	16		/* Machine dependent hints about
+#define AT_HWCAP	16		/* Machine-dependent hints about
 					   processor capabilities.  */
 
 /* This entry gives some information about the FPU initialization
@@ -1015,6 +1015,9 @@ typedef struct
 
 #define AT_RANDOM	25		/* Address of 16 random bytes.  */
 
+#define AT_HWCAP2	26		/* More machine-dependent hints about
+					   processor capabilities.  */
+
 #define AT_EXECFN	31		/* Filename of executable.  */
 
 /* Pointer to the global system page used for system calls and other
diff --git a/elf/ifuncdep2.c b/elf/ifuncdep2.c
index 758bae1932..99d19263ae 100644
--- a/elf/ifuncdep2.c
+++ b/elf/ifuncdep2.c
@@ -17,7 +17,7 @@ minus_one (void)
 }
 
 static int
-zero (void) 
+zero (void)
 {
   return 0;
 }
@@ -25,7 +25,7 @@ zero (void)
 void * foo1_ifunc (void) __asm__ ("foo1");
 __asm__(".type foo1, %gnu_indirect_function");
 
-void * 
+void *
 foo1_ifunc (void)
 {
   return ifunc_sel (one, minus_one, zero);
@@ -34,7 +34,7 @@ foo1_ifunc (void)
 void * foo2_ifunc (void) __asm__ ("foo2");
 __asm__(".type foo2, %gnu_indirect_function");
 
-void * 
+void *
 foo2_ifunc (void)
 {
   return ifunc_sel (minus_one, one, zero);
@@ -43,7 +43,7 @@ foo2_ifunc (void)
 void * foo3_ifunc (void) __asm__ ("foo3");
 __asm__(".type foo3, %gnu_indirect_function");
 
-void * 
+void *
 foo3_ifunc (void)
 {
   return ifunc_sel (one, zero, minus_one);
diff --git a/elf/ifuncmain1.c b/elf/ifuncmain1.c
index cc1e5ec5ba..747fc02648 100644
--- a/elf/ifuncmain1.c
+++ b/elf/ifuncmain1.c
@@ -29,7 +29,7 @@ int
 main (void)
 {
   foo_p p;
-  
+
   if (foo_ptr != foo)
     abort ();
   if (foo () != -1)
diff --git a/elf/ifuncmain1vis.c b/elf/ifuncmain1vis.c
index 81cd12288e..d35e2f81fc 100644
--- a/elf/ifuncmain1vis.c
+++ b/elf/ifuncmain1vis.c
@@ -50,7 +50,7 @@ int
 main (void)
 {
   foo_p p;
-  
+
   if (foo_ptr != foo)
     abort ();
   if ((*foo_ptr) () != -30)
diff --git a/elf/reldep.c b/elf/reldep.c
index 44b239b6c7..adabc0d5d5 100644
--- a/elf/reldep.c
+++ b/elf/reldep.c
@@ -54,7 +54,7 @@ main (void)
     }
 
   /* Now close the first object.  If must still be around since we have
-     a implicit dependency.  */
+     an implicit dependency.  */
   if (dlclose (h1) != 0)
     {
       printf ("closing h1 failed: %s\n", dlerror ());
diff --git a/elf/reldep3.c b/elf/reldep3.c
index b051c41dbc..05013d3509 100644
--- a/elf/reldep3.c
+++ b/elf/reldep3.c
@@ -54,7 +54,7 @@ main (void)
     }
 
   /* Now close the first object.  If must still be around since we have
-     a implicit dependency.  */
+     an implicit dependency.  */
   if (dlclose (h1) != 0)
     {
       printf ("closing h1 failed: %s\n", dlerror ());
diff --git a/elf/rtld-Rules b/elf/rtld-Rules
index f11dbe079a..1aa00060b8 100644
--- a/elf/rtld-Rules
+++ b/elf/rtld-Rules
@@ -88,29 +88,39 @@ else
 # Some other subdir's Makefile has provided all its normal rules,
 # and we just provide some additional definitions.
 
+rtld-compile-command.S = $(compile-command.S) $(rtld-CPPFLAGS)
+rtld-compile-command.s = $(compile-command.s) $(rtld-CPPFLAGS)
+rtld-compile-command.c = $(compile-command.c) $(rtld-CPPFLAGS)
+
 # These are the basic compilation rules corresponding to the Makerules ones.
 # The sysd-rules generated makefile already defines pattern rules for rtld-%
 # targets built from sysdeps source files.
 $(objpfx)rtld-%.os: rtld-%.S $(before-compile)
-	$(compile-command.S) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.S)
 $(objpfx)rtld-%.os: rtld-%.s $(before-compile)
-	$(compile-command.s) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.s)
 $(objpfx)rtld-%.os: rtld-%.c $(before-compile)
-	$(compile-command.c) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.c)
 $(objpfx)rtld-%.os: %.S $(before-compile)
-	$(compile-command.S) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.S)
 $(objpfx)rtld-%.os: %.s $(before-compile)
-	$(compile-command.s) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.s)
 $(objpfx)rtld-%.os: %.c $(before-compile)
-	$(compile-command.c) $(rtld-CPPFLAGS)
+	$(rtld-compile-command.c)
 
 # The rules for generated source files.
-$(objpfx)rtld-%.os: $(objpfx)rtld-%.S $(before-compile); $(compile-command.S)
-$(objpfx)rtld-%.os: $(objpfx)rtld-%.s $(before-compile); $(compile-command.s)
-$(objpfx)rtld-%.os: $(objpfx)rtld-%.c $(before-compile); $(compile-command.c)
-$(objpfx)rtld-%.os: $(objpfx)%.S $(before-compile); $(compile-command.S)
-$(objpfx)rtld-%.os: $(objpfx)%.s $(before-compile); $(compile-command.s)
-$(objpfx)rtld-%.os: $(objpfx)%.c $(before-compile); $(compile-command.c)
+$(objpfx)rtld-%.os: $(objpfx)rtld-%.S $(before-compile)
+	$(rtld-compile-command.S)
+$(objpfx)rtld-%.os: $(objpfx)rtld-%.s $(before-compile)
+	$(rtld-compile-command.s)
+$(objpfx)rtld-%.os: $(objpfx)rtld-%.c $(before-compile)
+	$(rtld-compile-command.c)
+$(objpfx)rtld-%.os: $(objpfx)%.S $(before-compile)
+	$(rtld-compile-command.S)
+$(objpfx)rtld-%.os: $(objpfx)%.s $(before-compile)
+	$(rtld-compile-command.s)
+$(objpfx)rtld-%.os: $(objpfx)%.c $(before-compile)
+	$(rtld-compile-command.c)
 
 # The command line setting of rtld-modules (see above) tells us
 # what we need to build, and that tells us what dependency files we need.
diff --git a/elf/rtld.c b/elf/rtld.c
index bf2e3351d3..a0bda1d165 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1840,10 +1840,8 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
 	      if (_dl_name_match_p (GLRO(dl_trace_prelink), l))
 		GLRO(dl_trace_prelink_map) = l;
 	      _dl_printf ("\t%s => %s (0x%0*Zx, 0x%0*Zx)",
-			  l->l_libname->name[0] ? l->l_libname->name
-			  : rtld_progname ?: "<main program>",
-			  l->l_name[0] ? l->l_name
-			  : rtld_progname ?: "<main program>",
+			  DSO_FILENAME (l->l_libname->name),
+			  DSO_FILENAME (l->l_name),
 			  (int) sizeof l->l_map_start * 2,
 			  (size_t) l->l_map_start,
 			  (int) sizeof l->l_addr * 2,
@@ -2000,8 +1998,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
 		      first = 0;
 		    }
 
-		  _dl_printf ("\t%s:\n",
-			      map->l_name[0] ? map->l_name : rtld_progname);
+		  _dl_printf ("\t%s:\n", DSO_FILENAME (map->l_name));
 
 		  while (1)
 		    {
@@ -2324,7 +2321,7 @@ print_unresolved (int errcode __attribute__ ((unused)), const char *objname,
 		  const char *errstring)
 {
   if (objname[0] == '\0')
-    objname = rtld_progname ?: "<main program>";
+    objname = RTLD_PROGNAME;
   _dl_error_printf ("%s	(%s)\n", errstring, objname);
 }
 
@@ -2334,7 +2331,7 @@ static void
 print_missing_version (int errcode __attribute__ ((unused)),
 		       const char *objname, const char *errstring)
 {
-  _dl_error_printf ("%s: %s: %s\n", rtld_progname ?: "<program name unknown>",
+  _dl_error_printf ("%s: %s: %s\n", RTLD_PROGNAME,
 		    objname, errstring);
 }
 
diff --git a/elf/setup-vdso.h b/elf/setup-vdso.h
index a98dfeca33..056d885bd6 100644
--- a/elf/setup-vdso.h
+++ b/elf/setup-vdso.h
@@ -89,7 +89,7 @@ setup_vdso (struct link_map *main_map __attribute__ ((unused)),
 	     addresses in the vsyscall DSO pages in writev() calls.  */
 	  const char *dsoname = ((char *) D_PTR (l, l_info[DT_STRTAB])
 				 + l->l_info[DT_SONAME]->d_un.d_val);
-	  size_t len = strlen (dsoname);
+	  size_t len = strlen (dsoname) + 1;
 	  char *copy = malloc (len);
 	  if (copy == NULL)
 	    _dl_fatal_printf ("out of memory\n");
diff --git a/elf/sln.c b/elf/sln.c
index a585c77817..be39fe41d5 100644
--- a/elf/sln.c
+++ b/elf/sln.c
@@ -176,13 +176,13 @@ makesymlink (src, dest)
       if (S_ISDIR (stats.st_mode))
 	{
 	  fprintf (stderr, _("%s: destination must not be a directory\n"),
-	  	   dest);
+		   dest);
 	  return 1;
 	}
       else if (unlink (dest) && errno != ENOENT)
 	{
 	  fprintf (stderr, _("%s: failed to remove the old destination\n"),
-	  	   dest);
+		   dest);
 	  return 1;
 	}
     }
@@ -205,7 +205,7 @@ makesymlink (src, dest)
 	  error = strerror (errno);
 	  unlink (dest);
 	  fprintf (stderr, _("Invalid link from \"%s\" to \"%s\": %s\n"),
-	  	   src, dest, error);
+		   src, dest, error);
 	  return 1;
 	}
       return 0;
@@ -214,7 +214,7 @@ makesymlink (src, dest)
     {
       error = strerror (errno);
       fprintf (stderr, _("Invalid link from \"%s\" to \"%s\": %s\n"),
-      	       src, dest, error);
+	       src, dest, error);
       return 1;
     }
 }
diff --git a/elf/sprof.c b/elf/sprof.c
index 60f310f47a..ecb7bdb2dc 100644
--- a/elf/sprof.c
+++ b/elf/sprof.c
@@ -1364,7 +1364,7 @@ generate_call_graph (struct profdata *profdata)
 	    runp = runp->next;
 	  }
 
-	/* Info abount the function itself.  */
+	/* Info about the function itself.  */
 	n = printf ("[%Zu]", cnt);
 	printf ("%*s%5.1f%8.2f%8.2f%9" PRIdMAX "         %s [%Zd]\n",
 		(int) (7 - n), " ",
diff --git a/elf/testobj.h b/elf/testobj.h
index 12f18effcc..1707ae340e 100644
--- a/elf/testobj.h
+++ b/elf/testobj.h
@@ -15,14 +15,14 @@ extern int obj3func1 (int);
 extern int obj3func2 (int);
 
 extern int obj4func1 (int);
-			 
+
 extern int obj4func2 (int);
-			 
+
 extern int obj5func1 (int);
-			 
+
 extern int obj5func2 (int);
-			 
+
 extern int obj6func1 (int);
-			 
+
 extern int obj6func2 (int);
 
diff --git a/elf/tst-null-argv-lib.c b/elf/tst-null-argv-lib.c
new file mode 100644
index 0000000000..e754299dc0
--- /dev/null
+++ b/elf/tst-null-argv-lib.c
@@ -0,0 +1,24 @@
+/* Verify that program does not crash when LD_DEBUG is set and the program name
+   is not available.  This is the library.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+void
+foo (void)
+{
+  return;
+}
diff --git a/elf/tst-null-argv.c b/elf/tst-null-argv.c
new file mode 100644
index 0000000000..dc242e495d
--- /dev/null
+++ b/elf/tst-null-argv.c
@@ -0,0 +1,35 @@
+/* Verify that program does not crash when LD_DEBUG is set and the program name
+   is not available.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+extern void foo (void);
+
+int
+do_test (int argc, char **argv)
+{
+  argv[0] = argv[1];
+  argc--;
+
+  /* This should result in a symbol lookup, causing a volley of debug output
+     when LD_DEBUG=symbols.  */
+  foo ();
+
+  return 0;
+}
+
+#include <test-skeleton.c>
diff --git a/elf/tst-stackguard1.c b/elf/tst-stackguard1.c
index fba60bdc90..2caa4a7807 100644
--- a/elf/tst-stackguard1.c
+++ b/elf/tst-stackguard1.c
@@ -160,7 +160,7 @@ do_test (void)
      the 16 runs, something is very wrong.  */
   int ndifferences = 0;
   int ndefaults = 0;
-  for (i = 0; i < N; ++i) 
+  for (i = 0; i < N; ++i)
     {
       if (child_stack_chk_guards[i] != child_stack_chk_guards[i+1])
 	ndifferences++;