procdef.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.
 *
 *----------------------------------------------------------------------
 */

/*
 *	procdef.h
 *
 *	Definitions related to process (program) loading
 */

#ifndef __SYS_PROCDEF_H__
#define __SYS_PROCDEF_H__

#include <sys/elf.h>
#include <sys/pinfo.h>
#include <extension/sys/segment.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Loading mode
 *	( LDMD_USR || LDMD_SYS ) | [LDMD_DYN]
 *
 *	Use LDMD_SYS for loading system program
 */
#define	LDMD_USR	0	/* Load user process */
#define	LDMD_SYS	1	/* Load system process */
#define	LDMD_DYN	2	/* Dynamic loading */

/*
 * User stack size
 */
IMPORT	W	DefaultStackSize;	/* Default size */

/*
 * Header section of object file
 */
typedef union {
	Elf32_Ehdr	elf;
	Bz_HDR		bz;
} OBJ_HDR;

/*
 * Compressed object load information
 */
typedef struct {
	UB	*recBuf;	/* Decompressed record data */
	W	recLen;		/* Length of decompressed record (number of bytes) */
	UH	recSubType;	/* Subtype of decompressed record */
} BzRead;

/*
 * Dynamic loading management information
 */
typedef struct {
	QUEUE	q;		/* Queue for management information connection */
	W	fd;		/* File descriptor */
	W	fdtype;		/* File type */
	ID	mid[N_LDMID];	/* Disk map ID */
	VP	topadr;		/* Start address */
	UW	dpage;		/* Number of disk map pages */
	UW	mpage;		/* Number of memory map pages */
	TC	name[L_FNM];	/* Name */
} DYNLD;
#define	DynLoadID(dynld)	( (UW)dynld >> 2 )

typedef struct prcminfo	PRCMINFO;

/* space.c */
IMPORT UW GetLSID_pinfo( PINFO *pinfo );
IMPORT VP GetUATB_lsid( UW lsid );
IMPORT T_TSKSPC GetTSKSPC_pinfo( PINFO *pinfo );
IMPORT T_TSKSPC GetTSKSPC_lsid( UW lsid );
IMPORT ER ChangeLogicalSpace( T_TSKSPC *curspc, T_TSKSPC chgspc );

/* memmgr.c */
IMPORT ER InitLocalMemory( PINFO *pinfo );
IMPORT ER GetLocalMemoryUseCount( PINFO *pinfo );

/* procmap.c */
IMPORT	W	DefaultStackSize;
IMPORT ER ReadProgFile( POBJ_HDR *pohdr, W ofs, VB *adr, W sz, BzRead *bzr );
IMPORT ER MapProc( PINFO *pinfo, POBJ_HDR *pohdr, FP *entry );
IMPORT ER UnmapProc( PINFO *pinfo );
IMPORT ER MapStack( PINFO *pinfo, W stksz, VP *laddr );
IMPORT ER UnmapStack( PINFO *pinfo, VP laddr );
IMPORT ER LoadModule( POBJ_HDR *pohdr, P_DYNLDINF *info, PINFO *pinfo );
IMPORT ER UnloadModule( W loadid, PINFO *pinfo );
IMPORT void UnloadAllModule( PRCMINFO *pmi, W pid );
IMPORT W ChkSysProgMap( ID did );
IMPORT ER LoadSysProg( POBJ_HDR *pohdr, TC *arg, VP loadadr[] );
IMPORT ER UnloadSysProg( W progid );
IMPORT ER FinishAllSysProgs( void );
IMPORT ER InitProcMap( void );
IMPORT void DumpSysProg( void );
IMPORT void DumpDynLoad( W pid );

/* ldelf.c */
IMPORT ER DirectLoad_elf( LDINFO *li, UW lsid, UW ldmode, Elf32_Ehdr *hdr, FP *entry, BzRead *bzr );
IMPORT ER DemandLoad_elf( LDINFO *li, UW lsid, UW ldmode, Elf32_Ehdr *hdr, ID did, PhyBlk *pb, FP *entry, BzRead *bzr );

#ifdef __cplusplus
}
#endif
#endif