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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/arp.c
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@@ -36,12 +36,6 @@
*
*/
/** Registered ARP protocols */
static struct arp_net_protocol arp_net_protocols[0]
__table_start ( struct arp_net_protocol, arp_net_protocols );
static struct arp_net_protocol arp_net_protocols_end[0]
__table_end ( struct arp_net_protocol, arp_net_protocols );
/** An ARP cache entry */
struct arp_entry {
/** Network-layer protocol */
@@ -176,8 +170,7 @@ int arp_resolve ( struct net_device *netdev, struct net_protocol *net_protocol,
static struct arp_net_protocol * arp_find_protocol ( uint16_t net_proto ) {
struct arp_net_protocol *arp_net_protocol;
for ( arp_net_protocol = arp_net_protocols ;
arp_net_protocol < arp_net_protocols_end ; arp_net_protocol++ ) {
for_each_table_entry ( arp_net_protocol, ARP_NET_PROTOCOLS ) {
if ( arp_net_protocol->net_protocol->net_proto == net_proto ) {
return arp_net_protocol;
}