u-boot/common/exports.c
Martin Dorwig 49cad54788 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)
2015-01-29 17:09:57 -07:00

23 lines
358 B
C

#include <common.h>
#include <exports.h>
#include <spi.h>
#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
__attribute__((unused)) static void dummy(void)
{
}
unsigned long get_version(void)
{
return XF_VERSION;
}
#define EXPORT_FUNC(f, a, x, ...) gd->jt->x = f;
void jumptable_init(void)
{
gd->jt = malloc(sizeof(struct jt_funcs));
#include <_exports.h>
}