libdl: Add support for large memory programs

- Add trampolines to support relocs that are out of range on
  support architectures.

- Support not loading separate text/data sections in an object
  file if the symbol provided in the section is a duplicate.
  A base image may have pulled in part of an object and another
  part needs to be dynamically loaded.

- Refactor the unresolved handling to scale to hundreds of
  unresolved symbols when loading large number of files.

Updates #3685

1 files changed, 8 insertions, 2 deletions

diff --git a/testsuites/libtests/dl09/dl-load.c b/testsuites/libtests/dl09/dl-load.c
index ee0ef0a335..160f8157d9 100644
--- a/testsuites/libtests/dl09/dl-load.c
+++ b/testsuites/libtests/dl09/dl-load.c
@@ -99,7 +99,7 @@ static void dl_check_resolved(void* handle, bool has_unresolved)
           handle, unresolved != 0 ? "" : "no ");
 }
 
-static void* dl_load_obj(const char* name, bool has_unresolved)
+static void* dl_load_obj (const char* name, bool has_unresolved)
 {
   void* handle;
 
@@ -184,11 +184,17 @@ int dl_load_test(void)
 
   dl_load_dump ();
 
+  /*
+   * Check for any resolved externals.
+   */
+  printf ("Check is any unresolved externals exist:\n");
+  dl_check_resolved (RTLD_SELF, false);
+
   printf ("Running rtems_main_o1:\n");
   if (dl_call (o[0].handle, "rtems_main_o1"))
     return 1;
 
-  for (i = 0; i < NUMOF(od); ++i)
+  for (i = 0; i < NUMOF (od); ++i)
     dl_object_close (&o[i]);
 
   return 0;