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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/usr/autoboot.c
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@@ -43,12 +43,6 @@
/** Shutdown flags for exit */
int shutdown_exit_flags = 0;
/* SAN boot protocols */
static struct sanboot_protocol sanboot_protocols[0] \
__table_start ( struct sanboot_protocol, sanboot_protocols );
static struct sanboot_protocol sanboot_protocols_end[0] \
__table_end ( struct sanboot_protocol, sanboot_protocols );
/**
* Identify the boot network device
*
@@ -124,8 +118,7 @@ int boot_root_path ( const char *root_path ) {
struct sanboot_protocol *sanboot;
/* Quick hack */
for ( sanboot = sanboot_protocols ;
sanboot < sanboot_protocols_end ; sanboot++ ) {
for_each_table_entry ( sanboot, SANBOOT_PROTOCOLS ) {
if ( strncmp ( root_path, sanboot->prefix,
strlen ( sanboot->prefix ) ) == 0 ) {
return sanboot->boot ( root_path );