Explicit locations: introduce explicit locations

[deliverable/binutils-gdb.git] / ld / ldlang.c

diff --git a/ld/ldlang.c b/ld/ldlang.c
index c96c21fd4ee0dd2e513408d3049560478bf1a632..0d6419d91ddaadc7d5449bd7ddcb77f8fc35d7d3 100644 (file)
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -3413,6 +3413,55 @@ lang_place_undefineds (void)
     insert_undefined (ptr->name);
 }
 
+/* Structure used to build the list of symbols that the user has required
+   be defined.  */
+
+struct require_defined_symbol
+{
+  const char *name;
+  struct require_defined_symbol *next;
+};
+
+/* The list of symbols that the user has required be defined.  */
+
+static struct require_defined_symbol *require_defined_symbol_list;
+
+/* Add a new symbol NAME to the list of symbols that are required to be
+   defined.  */
+
+void
+ldlang_add_require_defined (const char * const name)
+{
+  struct require_defined_symbol *ptr;
+
+  ldlang_add_undef (name, TRUE);
+  ptr = (struct require_defined_symbol *) stat_alloc (sizeof (*ptr));
+  ptr->next = require_defined_symbol_list;
+  ptr->name = strdup (name);
+  require_defined_symbol_list = ptr;
+}
+
+/* Check that all symbols the user required to be defined, are defined,
+   raise an error if we find a symbol that is not defined.  */
+
+static void
+ldlang_check_require_defined_symbols (void)
+{
+  struct require_defined_symbol *ptr;
+
+  for (ptr = require_defined_symbol_list; ptr != NULL; ptr = ptr->next)
+    {
+      struct bfd_link_hash_entry *h;
+
+      h = bfd_link_hash_lookup (link_info.hash, ptr->name,
+                                FALSE, FALSE, TRUE);
+      if (h == NULL
+          || (h->type != bfd_link_hash_defined
+              && h->type != bfd_link_hash_defweak))
+        einfo(_("%P%X: required symbol `%s' not defined\n"), ptr->name);
+    }
+}
+
 /* Check for all readonly or some readwrite sections.  */
 
 static void
@@ -6805,6 +6854,9 @@ lang_process (void)
   if (command_line.check_section_addresses)
     lang_check_section_addresses ();
 
+  /* Check any required symbols are known.  */
+  ldlang_check_require_defined_symbols ();
+
   lang_end ();
 }
 
@@ -8133,3 +8185,41 @@ lang_ld_feature (char *str)
       p = q;
     }
 }
+
+/* Pretty print memory amount.  */
+
+static void
+lang_print_memory_size (bfd_vma sz)
+{
+  if ((sz & 0x3fffffff) == 0)
+    printf ("%10" BFD_VMA_FMT "u GB", sz >> 30);
+  else if ((sz & 0xfffff) == 0)
+    printf ("%10" BFD_VMA_FMT "u MB", sz >> 20);
+  else if ((sz & 0x3ff) == 0)
+    printf ("%10" BFD_VMA_FMT "u KB", sz >> 10);
+  else
+    printf (" %10" BFD_VMA_FMT "u B", sz);
+}
+
+/* Implement --print-memory-usage: disply per region memory usage.  */
+
+void
+lang_print_memory_usage (void)
+{
+  lang_memory_region_type *r;
+
+  printf ("Memory region         Used Size  Region Size  %%age Used\n");
+  for (r = lang_memory_region_list; r->next != NULL; r = r->next)
+    {
+      bfd_vma used_length = r->current - r->origin;
+      double percent;
+
+      printf ("%16s: ",r->name_list.name);
+      lang_print_memory_size (used_length);
+      lang_print_memory_size ((bfd_vma) r->length);
+
+      percent = used_length * 100.0 / r->length;
+
+      printf ("    %6.2f%%\n", percent);
+    }
+}