libdl: Add support for trampolines

- Trampolines or fixups for veneers provide long jump support
  for instruciton sets that implement short relative address
  branches. The linker provides trampolines when creating a
  static image. This patch adds trampoline support to libdl
  and the ARM architecture.

- The dl09 test requires enough memory so modules are outside
  the relative branch instruction ranges for the architecture.

Updates #3685

1 files changed, 21 insertions, 0 deletions

diff --git a/testsuites/libtests/dl09/dl-load.h b/testsuites/libtests/dl09/dl-load.h
new file mode 100644
index 0000000000..72872917aa
--- /dev/null
+++ b/testsuites/libtests/dl09/dl-load.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2014, 2018 Chris Johns <chrisj@rtems.org>.  All rights reserved.
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <string.h>
+
+#if !defined(_DL_LOAD_H_)
+#define _DL_LOAD_H_
+
+static inline const char* dl_localise_file (const char* file)
+{
+  return (const char*) strstr (file, "testsuites");
+}
+
+int dl_load_test(void);
+
+#endif