WebSVN – HelenOS – Diff – /trunk/uspace/lib/libc/include/loader/pcb.h


/*
 * Copyright (c) 2008 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup fs
 * @{
 */
/** @file
 * @brief Program Control Block interface.
 */
 
#ifndef LIBC_PCB_H_
#define LIBC_PCB_H_
 
#include <sys/types.h>
#include <vfs/vfs.h>
 
typedef void (*entry_point_t)(void);
 
/** Program Control Block.
 *
 * Holds pointers to data passed from the program loader to the program
 * and/or to the dynamic linker. This includes the program entry point,
 * arguments, environment variables etc.
 *
 */
typedef struct {
    /** Program entry point. */
    entry_point_t entry;
   
    /** Number of command-line arguments. */
    int argc;
    /** Command-line arguments. */
    char **argv;
   
    /** Number of preset files. */
    int filc;
    /** Preset files. */
    fdi_node_t **filv;
   
    /*
     * ELF-specific data.
     */
   
    /** Pointer to ELF dynamic section of the program. */
    void *dynamic;
} pcb_t;
 
/**
 * A pointer to the program control block. Having received the PCB pointer,
 * the C library startup code stores it here for later use.
 */
extern pcb_t *__pcb;
 
#endif
 
/**
 * @}
 */
 

Rev 4491	Rev 4492
1	/*	1	/*
2	* Copyright (c) 2008 Jiri Svoboda	2	* Copyright (c) 2008 Jiri Svoboda
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup fs	29	/** @addtogroup fs
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	* @brief Program Control Block interface.	33	* @brief Program Control Block interface.
34	*/	34	*/
35		35
36	#ifndef LIBC_PCB_H_	36	#ifndef LIBC_PCB_H_
37	#define LIBC_PCB_H_	37	#define LIBC_PCB_H_
38		38
39	#include <sys/types.h>	39	#include <sys/types.h>
40	#include <vfs/vfs.h>	40	#include <vfs/vfs.h>
41		41
42	typedef void (*entry_point_t)(void);	42	typedef void (*entry_point_t)(void);
43		43
44	/** Program Control Block.	44	/** Program Control Block.
45	*	45	*
46	* Holds pointers to data passed from the program loader to the program	46	* Holds pointers to data passed from the program loader to the program
47	* and/or to the dynamic linker. This includes the program entry point,	47	* and/or to the dynamic linker. This includes the program entry point,
48	* arguments, environment variables etc.	48	* arguments, environment variables etc.
49	*	49	*
50	*/	50	*/
51	typedef struct {	51	typedef struct {
52	/** Program entry point. */	52	/** Program entry point. */
53	entry_point_t entry;	53	entry_point_t entry;
54		54
55	/** Number of command-line arguments. */	55	/** Number of command-line arguments. */
56	int argc;	56	int argc;
57	/** Command-line arguments. */	57	/** Command-line arguments. */
58	char **argv;	58	char **argv;
59		59
60	/** Number of preset files. */	60	/** Number of preset files. */
61	int filc;	61	int filc;
62	/** Preset files. */	62	/** Preset files. */
63	inode_t **filv;	63	fdi_node_t **filv;
64		64
65	/*	65	/*
66	* ELF-specific data.	66	* ELF-specific data.
67	*/	67	*/
68		68
69	/** Pointer to ELF dynamic section of the program. */	69	/** Pointer to ELF dynamic section of the program. */
70	void *dynamic;	70	void *dynamic;
71	} pcb_t;	71	} pcb_t;
72		72
73	/**	73	/**
74	* A pointer to the program control block. Having received the PCB pointer,	74	* A pointer to the program control block. Having received the PCB pointer,
75	* the C library startup code stores it here for later use.	75	* the C library startup code stores it here for later use.
76	*/	76	*/
77	extern pcb_t *__pcb;	77	extern pcb_t *__pcb;
78		78
79	#endif	79	#endif
80		80
81	/**	81	/**
82	* @}	82	* @}
83	*/	83	*/
84		84

Subversion Repositories HelenOS

(root)/trunk/uspace/lib/libc/include/loader/pcb.h – Rev 4491 → 4492