xnu-517.tar.gz

[apple/xnu.git] / osfmk / ddb / db_ext_symtab.c

diff --git a/osfmk/ddb/db_ext_symtab.c b/osfmk/ddb/db_ext_symtab.c
index b4976334f54650731d17a95e096cccc78271b404..4549a76e63b6ad58a8c505a99a1f1ba0e48069ec 100644 (file)
--- a/osfmk/ddb/db_ext_symtab.c
+++ b/osfmk/ddb/db_ext_symtab.c
@@ -74,6 +74,9 @@
  *     Loads a symbol table for an external file into the kernel debugger.
  *     The symbol table data is an array of characters.  It is assumed that
  *     the caller and the kernel debugger agree on its format.
+ 
+ *     This has never and will never be supported on MacOS X. The only reason I don't remove
+ *     it entirely is that it is an exported symbol.
  */
 kern_return_t
 host_load_symbol_table(
@@ -83,69 +86,5 @@ host_load_symbol_table(
        pointer_t       symtab,
        mach_msg_type_number_t  symtab_count)
 {
-#if !MACH_DEBUG || !MACH_KDB
         return KERN_FAILURE;
-#else
-       kern_return_t   result;
-       vm_offset_t     symtab_start;
-       vm_offset_t     symtab_end;
-       vm_map_t        map;
-       vm_map_copy_t   symtab_copy_object;
-
-       if (host_priv == HOST_PRIV_NULL)
-           return (KERN_INVALID_ARGUMENT);
-
-       /*
-        * Copy the symbol table array into the kernel.
-        * We make a copy of the copy object, and clear
-        * the old one, so that returning error will not
-        * deallocate the data twice.
-        */
-       symtab_copy_object = (vm_map_copy_t) symtab;
-       result = vm_map_copyout(
-                       kernel_map,
-                       &symtab_start,
-                       vm_map_copy_copy(symtab_copy_object));
-       if (result != KERN_SUCCESS)
-           return (result);
-
-       symtab_end = symtab_start + symtab_count;
-
-       /*
-        * Add the symbol table.
-        * Do not keep a reference for the task map.    XXX
-        */
-       if (task == TASK_NULL)
-           map = VM_MAP_NULL;
-       else
-           map = task->map;
-       if (!X_db_sym_init((char *)symtab_start,
-                       (char *)symtab_end,
-                       name,
-                       (char *)map))
-       {
-           /*
-            * Not enough room for symbol table - failure.
-            */
-           (void) vm_deallocate(kernel_map,
-                       symtab_start,
-                       symtab_count);
-           return (KERN_FAILURE);
-       }
-
-       /*
-        * Wire down the symbol table
-        */
-       (void) vm_map_wire(kernel_map,
-               symtab_start,
-               round_page(symtab_end),
-               VM_PROT_READ|VM_PROT_WRITE, FALSE);
-
-       /*
-        * Discard the original copy object
-        */
-       vm_map_copy_discard(symtab_copy_object);
-
-       return (KERN_SUCCESS);
-#endif /* MACH_DEBUG && MACH_KDB */
 }