/* process's Modules library
 * by Marek Zelem
 */

#ifndef _MODULES_H
#define _MODULES_H

#ifdef linux
#include <linux/types.h>
#else
#include <machine/types.h>
#endif
#include "elf.h"

//typedef       u_long  u32;

#define	E_UNDEF		-200
#define	E_NOINIT	-201	/* init_module doesn't exist */
#define	E_NOMOD		-210
#define	E_MODEXIST	-211
#define	E_MODUNINIT	-212	/* uninitialized module */
#define	E_MODSYMUSED	-213	/* mod->used!=NULL */
#define	E_MODINUSE	-214	/* mod->usecount!=0 */

#define	E_IMPOSIBLE	-500	/* can't be ! (shouldn't) */

typedef struct {
	char *name;
	void *addr;
} mod_syms_t;

#define SF(x)	{#x,(x)}
#define	SD(x)	{#x,&(x)}
#ifndef SE
#define	SE	{NULL,NULL}
#endif				/* SE */

struct s_modsym {
	char *name;		/* none */
	long value;
	u_long size;
	u_short segment;
	u_short type;		/* unused */
};

struct s_modrel {
	int pos;
	long addend;
	int symbol;
	int type;
};

struct s_modseg {
	char *name;		/* free */
	int pos;
	long size;
	int prot;
	int section;
};

typedef struct s_modules_t {
	struct s_modules_t *next;
	struct s_modules_t *prev;
	char *mem;		/* free */
	int memsize;
	u32 *drel_tab;		/* free */
	int drel_len;
	int status;
	char *name;		/* free */
	char *symnames;
	elfmap_t map_symnames;	/* unmap */
	struct s_modsym *sym;	/* free */
	u_long nr_sym, sym_size;
	struct s_modseg *segment;	/* free */
	u_long nr_seg;
	struct s_modsym *undef;	/* free */
	long undef_len, undef_size;
	struct s_modrel *rel;	/* free */
	long rel_len, rel_size;
} modules_t;

struct s_modsym *modules_get_symbol(modules_t * me, char *name);

/* If exists function int __loaded_module(void),
 * then it calls it, if it returns < 0 then error
 * If function doesn't exist and exist undefined used symbols, then err
 */
modules_t *modules_load_module(const char *filename,
			       const char *name, int status);

struct fctab_s *object_to_string(const char *filename);

int modules_print_undef(int fd, modules_t * mod);

struct fctab_s {
	u32 version;
	u32 main;
	u32 start;
	u32 drel_tab;
	u32 total_len;
	u32 argc;
	u32 argv;
	u32 reserved;
};

#endif				/* _MODULES_H */