Remove commented-out code in symfile.c

This patch removes some code that has been `#if 0'-ed since at least
1999 or 2000...

gdb/ChangeLog:

        * symfile.c: Remove all "#if 0"/"#endif" blocks.

2 files changed, 4 insertions, 71 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index dc34d82..3fb418c 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
 2010-11-22  Joel Brobecker  <brobecker@adacore.com>
 
+	* symfile.c: Remove all "#if 0"/"#endif" blocks.
+
+2010-11-22  Joel Brobecker  <brobecker@adacore.com>
+
 	* symfile.c: Add missing second space after period in various comments.
 
 2010-11-22  Joel Brobecker  <brobecker@adacore.com>
diff --git a/gdb/symfile.c b/gdb/symfile.c
index 42e1c64..30fd125 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -87,11 +87,6 @@ extern void report_transfer_performance (unsigned long, time_t, time_t);
 
 /* Functions this file defines */
 
-#if 0
-static int simple_read_overlay_region_table (void);
-static void simple_free_overlay_region_table (void);
-#endif
-
 static void load_command (char *, int);
 
 static void symbol_file_add_main_1 (char *args, int from_tty, int flags);
@@ -3302,17 +3297,8 @@ overlay_command (char *args, int from_tty)
 
 /* Cached, dynamically allocated copies of the target data structures: */
 static unsigned (*cache_ovly_table)[4] = 0;
-#if 0
-static unsigned (*cache_ovly_region_table)[3] = 0;
-#endif
 static unsigned cache_novlys = 0;
-#if 0
-static unsigned cache_novly_regions = 0;
-#endif
 static CORE_ADDR cache_ovly_table_base = 0;
-#if 0
-static CORE_ADDR cache_ovly_region_table_base = 0;
-#endif
 enum ovly_index
   {
     VMA, SIZE, LMA, MAPPED
@@ -3329,19 +3315,6 @@ simple_free_overlay_table (void)
   cache_ovly_table_base = 0;
 }
 
-#if 0
-/* Throw away the cached copy of _ovly_region_table */
-static void
-simple_free_overlay_region_table (void)
-{
-  if (cache_ovly_region_table)
-    xfree (cache_ovly_region_table);
-  cache_novly_regions = 0;
-  cache_ovly_region_table = NULL;
-  cache_ovly_region_table_base = 0;
-}
-#endif
-
 /* Read an array of ints of size SIZE from the target into a local buffer.
    Convert to host order.  int LEN is number of ints  */
 static void
@@ -3402,50 +3375,6 @@ simple_read_overlay_table (void)
   return 1;			/* SUCCESS */
 }
 
-#if 0
-/* Find and grab a copy of the target _ovly_region_table
-   (and _novly_regions, which is needed for the table's size) */
-static int
-simple_read_overlay_region_table (void)
-{
-  struct minimal_symbol *msym;
-  struct gdbarch *gdbarch;
-  int word_size;
-  enum bfd_endian byte_order;
-
-  simple_free_overlay_region_table ();
-  msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL);
-  if (msym == NULL)
-    return 0;			/* failure */
-
-  gdbarch = get_objfile_arch (msymbol_objfile (msym));
-  word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
-  byte_order = gdbarch_byte_order (gdbarch);
-
-  cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym),
-					     4, byte_order);
-
-  cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12);
-  if (cache_ovly_region_table != NULL)
-    {
-      msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL);
-      if (msym != NULL)
-	{
-	  cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym);
-	  read_target_long_array (cache_ovly_region_table_base,
-				  (unsigned int *) cache_ovly_region_table,
-				  cache_novly_regions * 3,
-				  word_size, byte_order);
-	}
-      else
-	return 0;		/* failure */
-    }
-  else
-    return 0;			/* failure */
-  return 1;			/* SUCCESS */
-}
-#endif
-
 /* Function: simple_overlay_update_1
    A helper function for simple_overlay_update.  Assuming a cached copy
    of _ovly_table exists, look through it to find an entry whose vma,