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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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10
src/core/resolv.c
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@@ -150,12 +150,6 @@ struct resolver numeric_resolver __resolver ( RESOLV_NUMERIC ) = {
***************************************************************************
*/
/** Registered name resolvers */
static struct resolver resolvers[0]
__table_start ( struct resolver, resolvers );
static struct resolver resolvers_end[0]
__table_end ( struct resolver, resolvers );
/** A name resolution multiplexer */
struct resolv_mux {
/** Reference counter */
@@ -223,7 +217,7 @@ static void resolv_mux_done ( struct resolv_interface *resolv,
/* Attempt next child resolver, if possible */
mux->resolver++;
if ( mux->resolver >= resolvers_end ) {
if ( mux->resolver >= table_end ( struct resolver, RESOLVERS ) ) {
DBGC ( mux, "RESOLV %p failed to resolve name\n", mux );
goto finished;
}
@@ -262,7 +256,7 @@ int resolv ( struct resolv_interface *resolv, const char *name,
return -ENOMEM;
resolv_init ( &mux->parent, &null_resolv_ops, &mux->refcnt );
resolv_init ( &mux->child, &resolv_mux_child_ops, &mux->refcnt );
mux->resolver = resolvers;
mux->resolver = table_start ( struct resolver, RESOLVERS );
memcpy ( &mux->sa, sa, sizeof ( mux->sa ) );
memcpy ( mux->name, name, name_len );