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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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11
src/core/console.c
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@@ -5,11 +5,6 @@
/** @file */
static struct console_driver console_drivers[0]
__table_start ( struct console_driver, console );
static struct console_driver console_drivers_end[0]
__table_end ( struct console_driver, console );
/**
* Write a single character to each console device.
*
@@ -28,8 +23,7 @@ void putchar ( int character ) {
if ( character == '\n' )
putchar ( '\r' );
for ( console = console_drivers; console < console_drivers_end ;
console++ ) {
for_each_table_entry ( console, CONSOLES ) {
if ( ( ! console->disabled ) && console->putchar )
console->putchar ( character );
}
@@ -51,8 +45,7 @@ void putchar ( int character ) {
static struct console_driver * has_input ( void ) {
struct console_driver *console;
for ( console = console_drivers; console < console_drivers_end ;
console++ ) {
for_each_table_entry ( console, CONSOLES ) {
if ( ( ! console->disabled ) && console->iskey ) {
if ( console->iskey () )
return console;