The ABI wrapper from r775 made the SHARED definitions obsolete. They're

not that readable anyway, so kill them and use standard definitions
instead.

Introduce EXPORT_SYMBOL for shared symbols. EXPORT_SYMBOL tells the
compiler to use the standard calling conventions for a given symbol and
not to optimize it away.
Benefits:
- We can later use gcc -combine -fwhole-program without problems.
- It's a correctness fix for some optimizations.
- We could check for duplicated exported functions at link time.
- We could check whether exported functions are linked into initram or
stage2 by accident.
- We could generate usage statistics and possibly optimize away unused
shared functions.
- Through the above points, significant side reductions of 10-40%

Build and boot tested on qemu.
Build tested on all targets.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://coreboot.org/repository/coreboot-v3@780 f3766cd6-281f-0410-b1cd-43a5c92072e9

include/post_code.h

@@ -24,7 +24,8 @@
 #include <types.h>
 #include <shared.h>
 
-SHARED(post_code, void, u8 value);
+void post_code(u8 value);
+EXPORT_SYMBOL(post_code);
 
 /* This is a collection of existing POST values used by post_code().
  * port80_post() and Geode specific codes are not (yet?) listed here.