Export redesign

this is an atempt to make the export of functions typesafe.
I replaced the jumptable void ** by a struct (jt_funcs) with function pointers.
The EXPORT_FUNC macro now has 3 fixed parameters and one
variadic parameter
The first is the name of the exported function,
the rest of the parameters are used to format a functionpointer
in the jumptable,

the EXPORT_FUNC macros are expanded three times,
1. to declare the members of the struct
2. to initialize the structmember pointers
3. to call the functions in stubs.c

Signed-off-by: Martin Dorwig <dorwig@tetronik.com>
Acked-by: Simon Glass <sjg@chromium.org>

Signed-off-by: Simon Glass <sjg@chromium.org>
(resending to the list since my tweaks are not quite trivial)

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/blackfin/cpu/cpu.c b/arch/blackfin/cpu/cpu.c
index b7f118801d1..91aa5cc89c3 100644
--- a/arch/blackfin/cpu/cpu.c
+++ b/arch/blackfin/cpu/cpu.c
@@ -24,6 +24,7 @@
 
 #include "cpu.h"
 #include "initcode.h"
+#include "exports.h"
 
 ulong bfin_poweron_retx;
 DECLARE_GLOBAL_DATA_PTR;
@@ -121,7 +122,7 @@ static void display_global_data(void)
 	printf(" |-ram_size: %lx\n", gd->ram_size);
 	printf(" |-env_addr: %lx\n", gd->env_addr);
 	printf(" |-env_valid: %lx\n", gd->env_valid);
-	printf(" |-jt(%p): %p\n", gd->jt, *(gd->jt));
+	printf(" |-jt(%p): %p\n", gd->jt, gd->jt->get_version);
 	printf(" \\-bd: %p\n", gd->bd);
 	printf("   |-bi_boot_params: %lx\n", bd->bi_boot_params);
 	printf("   |-bi_memstart: %lx\n", bd->bi_memstart);