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[tables] Redefine methods for accessing linker tables

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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.
This commit is contained in:
Michael Brown
2009-03-12 19:41:40 +00:00
parent 3ed468e0c5
commit 1266d7902b
48 changed files with 239 additions and 264 deletions
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9
src/net/netdevice.c
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@@ -36,12 +36,6 @@
*
*/
/** Registered network-layer protocols */
static struct net_protocol net_protocols[0]
__table_start ( struct net_protocol, net_protocols );
static struct net_protocol net_protocols_end[0]
__table_end ( struct net_protocol, net_protocols );
/** List of network devices */
struct list_head net_devices = LIST_HEAD_INIT ( net_devices );
@@ -538,8 +532,7 @@ int net_rx ( struct io_buffer *iobuf, struct net_device *netdev,
struct net_protocol *net_protocol;
/* Hand off to network-layer protocol, if any */
for ( net_protocol = net_protocols ; net_protocol < net_protocols_end ;
net_protocol++ ) {
for_each_table_entry ( net_protocol, NET_PROTOCOLS ) {
if ( net_protocol->net_proto == net_proto ) {
return net_protocol->rx ( iobuf, netdev, ll_source );
}