[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, 6 deletions

diff --git a/src/core/device.c b/src/core/device.c
index 84915c2d..1f57e4c6 100644
--- a/src/core/device.c
+++ b/src/core/device.c
@@ -29,11 +29,6 @@
  *
  */
 
-static struct root_device root_devices[0]
-	__table_start ( struct root_device, root_devices );
-static struct root_device root_devices_end[0]
-	__table_end ( struct root_device, root_devices );
-
 /** Registered root devices */
 static LIST_HEAD ( devices );
 
@@ -77,7 +72,7 @@ static void probe_devices ( void ) {
 	struct root_device *rootdev;
 	int rc;
 
-	for ( rootdev = root_devices; rootdev < root_devices_end; rootdev++ ) {
+	for_each_table_entry ( rootdev, ROOT_DEVICES ) {
 		list_add ( &rootdev->dev.siblings, &devices );
 		INIT_LIST_HEAD ( &rootdev->dev.children );
 		if ( ( rc = rootdev_probe ( rootdev ) ) != 0 )