RAP file support.

This is the initial addition of support for LZ77 RTEMS applications
in the RAP format.

The change add support for different formats to the loader. Each
format type is asked to check the file being loading and if
it matches the format's loader is called to load the file.

Support has been added to stream LZ77 files via the object file
cache.

1 files changed, 17 insertions, 0 deletions

diff --git a/rtl.h b/rtl.h
index c02b4dd..52149d5 100644
--- a/rtl.h
+++ b/rtl.h
@@ -26,6 +26,7 @@
 #include <rtl-fwd.h>
 #include <rtl-obj.h>
 #include <rtl-obj-cache.h>
+#include <rtl-obj-comp.h>
 #include <rtl-unresolved.h>
 
 #ifdef __cplusplus
@@ -93,6 +94,7 @@ struct rtems_rtl_data_s
   rtems_rtl_obj_cache_t  symbols;        /**< Symbols object file cache. */
   rtems_rtl_obj_cache_t  strings;        /**< Strings object file cache. */
   rtems_rtl_obj_cache_t  relocs;         /**< Relocations object file cache. */
+  rtems_rtl_obj_comp_t   decomp;         /**< The decompression compressor. */
   int                    last_errno;     /**< Last error number. */
   char                   last_error[64]; /**< Last error string. */
 };
@@ -144,6 +146,21 @@ void rtems_rtl_obj_caches (rtems_rtl_obj_cache_t** symbols,
 void rtems_rtl_obj_caches_flush (void);
 
 /**
+ * Get the RTL decompressor setting the cache and the offset in the file the
+ * compressed stream starts. This call assmes the RTL is locked.
+ *
+ * @param decomp Pointer to the location to set the compressor into. Returns
+ *               NULL is rtl is not initialised.
+ * @param cache The cache to read the file with. Saves needing an extrs buffer.
+ * @param offset The offset in the file the compressed stream starts.
+ */
+void rtems_rtl_obj_comp (rtems_rtl_obj_comp_t** decomp,
+                         rtems_rtl_obj_cache_t* cache,
+                         int                    fd,
+                         int                    compression,
+                         off_t                  offset);
+
+/**
  * Lock the Run-time Linker.
  *
  * @return rtems_rtl_data_t* The RTL data after being locked.