* ltconfig, ltmain.sh: Upgrade to libtool 1.4a 1.641.2.256.

[deliverable/binutils-gdb.git] / gdb / solib.c

diff --git a/gdb/solib.c b/gdb/solib.c
index 0b511f2ab9374f5f3e60d3f4760b3f5f06ac9025..8a5a90431b5b36fbb115b4713db60ded8d1edb56 100644 (file)
--- a/gdb/solib.c
+++ b/gdb/solib.c
@@ -461,30 +461,20 @@ update_solib_list (int from_tty, struct target_ops *target)
          catch_errors (solib_map_sections, i,
                        "Error while mapping shared library sections:\n",
                        RETURN_MASK_ALL);
-       }
-
-      /* If requested, add the shared objects' sections to the the
-        TARGET's section table.  */
-      if (target)
-       {
-         int new_sections;
-
-         /* Figure out how many sections we'll need to add in total.  */
-         new_sections = 0;
-         for (i = inferior; i; i = i->next)
-           new_sections += (i->sections_end - i->sections);
 
-         if (new_sections > 0)
+         /* If requested, add the shared object's sections to the TARGET's
+            section table.  Do this immediately after mapping the object so
+            that later nodes in the list can query this object, as is needed
+            in solib-osf.c.  */
+         if (target)
            {
-             int space = target_resize_to_sections (target, new_sections);
-
-             for (i = inferior; i; i = i->next)
+             int count = (i->sections_end - i->sections);
+             if (count > 0)
                {
-                 int count = (i->sections_end - i->sections);
+                 int space = target_resize_to_sections (target, count);
                  memcpy (target->to_sections + space,
                          i->sections,
                          count * sizeof (i->sections[0]));
-                 space += count;
                }
            }
        }
@@ -605,7 +595,10 @@ info_sharedlibrary_command (char *ignore, int from_tty)
     }
 
   arch_size = bfd_get_arch_size (exec_bfd);
-  /* Default to 32-bit in case of failure (non-elf). */
+  if (arch_size == -1)
+    arch_size = bfd_arch_bits_per_address(exec_bfd);
+
+  /* Default to 32-bit in case of failure.  */
   if (arch_size == 32 || arch_size == -1)
     {
       addr_width = 8 + 4;
@@ -809,6 +802,24 @@ sharedlibrary_command (char *args, int from_tty)
   solib_add (args, from_tty, (struct target_ops *) 0);
 }
 
+/* LOCAL FUNCTION
+
+   no_shared_libraries -- handle command to explicitly discard symbols
+   from shared libraries.
+
+   DESCRIPTION
+
+   Implements the command "nosharedlibrary", which discards symbols
+   that have been auto-loaded from shared libraries.  Symbols from
+   shared libraries that were added by explicit request of the user
+   are not discarded.  Also called from remote.c.  */
+
+void
+no_shared_libraries (char *ignored, int from_tty)
+{
+  objfile_purge_solibs ();
+  do_clear_solib (NULL);
+}
 
 void
 _initialize_solib (void)
@@ -819,6 +830,8 @@ _initialize_solib (void)
           "Load shared object library symbols for files matching REGEXP.");
   add_info ("sharedlibrary", info_sharedlibrary_command,
            "Status of loaded shared object libraries.");
+  add_com ("nosharedlibrary", class_files, no_shared_libraries,
+          "Unload all shared object library symbols.");
 
   add_show_from_set
     (add_set_cmd ("auto-solib-add", class_support, var_zinteger,