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Export redesign

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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)
This commit is contained in:
Martin Dorwig
2015-01-26 15:22:54 -07:00
committed by Simon Glass
parent 2017aaef8c
commit 49cad54788
10 changed files with 163 additions and 121 deletions
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22
include/exports.h
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@@ -3,6 +3,8 @@
#ifndef __ASSEMBLY__
struct spi_slave;
/* These are declarations of exported functions available in C code */
unsigned long get_version(void);
int getc(void);
@@ -10,22 +12,23 @@ int tstc(void);
void putc(const char);
void puts(const char*);
int printf(const char* fmt, ...);
void install_hdlr(int, void (*interrupt_handler_t)(void *), void*);
void install_hdlr(int, interrupt_handler_t, void*);
void free_hdlr(int);
void *malloc(size_t);
void free(void*);
void __udelay(unsigned long);
unsigned long get_timer(unsigned long);
int vprintf(const char *, va_list);
unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base);
unsigned long simple_strtoul(const char *cp, char **endp, unsigned int base);
int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
char *getenv (const char *name);
int setenv (const char *varname, const char *varvalue);
long simple_strtol(const char *cp,char **endp,unsigned int base);
int strcmp(const char * cs,const char * ct);
long simple_strtol(const char *cp, char **endp, unsigned int base);
int strcmp(const char *cs, const char *ct);
unsigned long ustrtoul(const char *cp, char **endp, unsigned int base);
unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base);
#if defined(CONFIG_CMD_I2C)
#if defined(CONFIG_CMD_I2C) && \
(!defined(CONFIG_DM_I2C) || defined(CONFIG_DM_I2C_COMPAT))
int i2c_write (uchar, uint, int , uchar* , int);
int i2c_read (uchar, uint, int , uchar* , int);
#endif
@@ -34,15 +37,14 @@ void app_startup(char * const *);
#endif /* ifndef __ASSEMBLY__ */
enum {
#define EXPORT_FUNC(x) XF_ ## x ,
struct jt_funcs {
#define EXPORT_FUNC(impl, res, func, ...) res(*func)(__VA_ARGS__);
#include <_exports.h>
#undef EXPORT_FUNC
XF_MAX
};
#define XF_VERSION 6
#define XF_VERSION 7
#if defined(CONFIG_X86)
extern gd_t *global_data;