so.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	@(#)so.h (solib) 
 *
 *	Shared object(SO)support library
 */

#ifndef _SO_H_
#define _SO_H_

#include <basic.h>
#include <tk/tkernel.h>
#include <alloca.h>
#include <extension/file.h>
#include <extension/proctask.h>
#include <extension/errno.h>
#include <extension/seio.h>
#include <sys/pinfo.h>
#include <sys/tkseconf.h>
#include <sys/solib.h>
#include <tstring.h>
#include <tcode.h>
#include <sys/syslog.h>
#include <sys/knldbg.h>
#include <sys/debug.h>
#include <seio/sys/stat.h>

#undef free

#include <tm/tmonitor.h>
#define DM(s) { /*tm_putstring(s);*/ /*tm_monitor();*/ }

#define STDLIB_DIR "/SYS/lib/"
#define PATH_LENGTH_MAX	(256 + 1)

/*
 * Local use memory allocation function
 */
#define	malloc	__so_malloc
#define	calloc	__so_calloc
#define	realloc	__so_realloc
#define	free	__so_free

/*
 * Target symbol information of symbol link at runtime
 */
typedef struct {
	DLInfo	*dlp;		/* Target object */
	UW	relofs;		/* Relocation table offset */
} TargetSym;

/*
 * Searched shared object information
 */
typedef struct {
	QUEUE q;
	UB *name;		/* Object name(ASCII) */
	SOBJ_HDR soHdr;
} SobjInfo;

/* ------------------------------------------------------------------------ */
/*
 *	Global function/variable
 *
 */
#define	IMPORT_DEFINE	1

#if IMPORT_DEFINE
/* soinit.c */
IMPORT DLInfo	__dlInfo;
IMPORT W	__so_LazyMode;
IMPORT SOBJ_HDR	__so_myfile;
IMPORT SOBJ_HDR	__so_stdlib;
IMPORT QUEUE	__so_sobjInfo;
IMPORT ER	__so_initloading( void );
IMPORT void	__so_init( void );
IMPORT void	__so_fini( void );
/* dlinfo.c */
IMPORT DLInfo*	__newDLInfo( SOBJ_HDR *soHdr, DLInfo *loader );
IMPORT void	__freeDLInfo( DLInfo *dlp );
IMPORT DLInfo*	__searchDLInfo( SOBJ_HDR *soHdr );
/* load.c */
IMPORT ER	__so_getdynamicinfo( DLInfo *dlp );
IMPORT ER	__so_loading( DLInfo **dlpp, SOBJ_HDR *soHdr, DLInfo *loader );
IMPORT ER	__so_depsloading( DLInfo *loader, UW global );
IMPORT void	__so_callinit( DLInfo *loader );
IMPORT void	__so_callfini( DLInfo *loader );
/* reloc.c */
IMPORT ER	__so_relocate( DLInfo *loader, UW lazy );
/* resolve.c */
IMPORT UW	__so_resolve( DLInfo *dlp, UB *name, UW reltype, Elf32_Sym **sym );
IMPORT UW	__so_localresolve( DLInfo *dlp, UB *name, DLInfo *skip, Elf32_Sym **sym );
/* somalloc.c */
IMPORT ER	__so_initmalloc( void );
IMPORT void*	__so_malloc( size_t size );
IMPORT void*	__so_calloc( size_t nmemb, size_t size );
IMPORT void*	__so_realloc( void *ptr, size_t size );
IMPORT void	__so_free( void *ptr );
#endif

/* runtime.S */
IMPORT void __so_runtime_resolve();

#endif /* _SO_H_ */

/* ------------------------------------------------------------------------ */