[tables] Redefine methods for accessing linker tables

Intel's C compiler (icc) chokes on the zero-length arrays that we
currently use as part of the mechanism for accessing linker table
entries.  Abstract away the zero-length arrays, to make a port to icc
easier.

Introduce macros such as for_each_table_entry() to simplify the common
case of iterating over all entries in a linker table.

Represent table names as #defined string constants rather than
unquoted literals; this avoids visual confusion between table names
and C variable or type names, and also allows us to force a
compilation error in the event of incorrect table names.

1 files changed, 1 insertions, 7 deletions

diff --git a/src/core/image.c b/src/core/image.c
index 277d09a9..0d188c30 100644
--- a/src/core/image.c
+++ b/src/core/image.c
@@ -37,12 +37,6 @@
 /** List of registered images */
 struct list_head images = LIST_HEAD_INIT ( images );
 
-/** List of image types */
-static struct image_type image_types[0]
-	__table_start ( struct image_type, image_types );
-static struct image_type image_types_end[0]
-	__table_end ( struct image_type, image_types );
-
 /**
  * Free executable/loadable image
  *
@@ -219,7 +213,7 @@ int image_autoload ( struct image *image ) {
 		return image_load ( image );
 
 	/* Otherwise probe for a suitable type */
-	for ( type = image_types ; type < image_types_end ; type++ ) {
+	for_each_table_entry ( type, IMAGE_TYPES ) {
 		DBGC ( image, "IMAGE %p trying type %s\n", image, type->name );
 		rc = image_load_type ( image, type );
 		if ( image->type == NULL )