WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/loader/main.c


/*
 * 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 loader
 * @brief   Loads and runs programs from VFS.
 * @{
 */
/**
 * @file
 */
 
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
 
#include "elf.h"
 
unsigned int elf_load(int fd, elf_header_t *header);
 
typedef void (*entry_point_t)(void);
 
int elf_load_file(char *file_name, elf_header_t *header)
{
    int fd;
    int rc;
 
    printf("open and read '%s'...\n", file_name);
 
    fd = open(file_name, 0);
    if (fd < 0) {
        printf("failed opening file\n");
        return -1;
    }
 
    rc = elf_load(fd, header);
    printf("elf_load() -> %d\n", rc);
 
    close(fd);
 
    return rc;
}
 
void elf_run(elf_header_t *header)
{
    entry_point_t entry_point;
 
    entry_point = (entry_point_t)header->e_entry;
    (*entry_point)();
 
    /* not reached */
}
 
int main(int argc, char *argv[])
{
    elf_header_t header;
    char *file_name;
    int rc;
 
    printf("This is loader\n");
    getchar();
 
    file_name = "/test";
    rc = elf_load_file(file_name, &header);
    printf("open and read '%s'...\n", file_name);
 
    if (rc < 0) {
        printf("failed to load program\n");
        return 1;
    }
 
    printf("run program\n");
    elf_run(&header);
 
    /* not reached */
    return 0;
}
 
/** @}
 */
 

Rev 2929	Rev 2932
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 loader	29	/** @addtogroup loader
30	* @brief Loads and runs programs from VFS.	30	* @brief Loads and runs programs from VFS.
31	* @{	31	* @{
32	*/	32	*/
33	/**	33	/**
34	* @file	34	* @file
35	*/	35	*/
36		36
37	#include <stdio.h>	37	#include <stdio.h>
38	#include <unistd.h>	38	#include <unistd.h>
39	#include <fcntl.h>	39	#include <fcntl.h>
40	#include <sys/types.h>	40	#include <sys/types.h>
41		41
42	#include "elf.h"	42	#include "elf.h"
43		43
44	unsigned int elf_load(int fd, elf_header_t *header);	44	unsigned int elf_load(int fd, elf_header_t *header);
45		45
46	typedef void (*entry_point_t)(void);	46	typedef void (*entry_point_t)(void);
47		47
48	int elf_load_file(char file_name, elf_header_t header)	48	int elf_load_file(char file_name, elf_header_t header)
49	{	49	{
50	int fd;	50	int fd;
51	int rc;	51	int rc;
52		52
53	printf("open and read '%s'...\n", file_name);	53	printf("open and read '%s'...\n", file_name);
54		54
55	fd = open(file_name, 0);	55	fd = open(file_name, 0);
56	if (fd < 0) {	56	if (fd < 0) {
57	printf("failed opening file\n");	57	printf("failed opening file\n");
58	return -1;	58	return -1;
59	}	59	}
60		60
61	rc = elf_load(fd, header);	61	rc = elf_load(fd, header);
62	printf("elf_load() -> %d\n", rc);	62	printf("elf_load() -> %d\n", rc);
63		63
64	close(fd);	64	close(fd);
65		65
66	return rc;	66	return rc;
67	}	67	}
68		68
69	void elf_run(elf_header_t *header)	69	void elf_run(elf_header_t *header)
70	{	70	{
71	entry_point_t entry_point;	71	entry_point_t entry_point;
72		72
73	entry_point = (entry_point_t)header->e_entry;	73	entry_point = (entry_point_t)header->e_entry;
74	(*entry_point)();	74	(*entry_point)();
75		75
76	/* not reached */	76	/* not reached */
77	}	77	}
78		78
79	int main(int argc, char *argv[])	79	int main(int argc, char *argv[])
80	{	80	{
81	elf_header_t header;	81	elf_header_t header;
82	char *file_name;	82	char *file_name;
83	int rc;	83	int rc;
84		84
85	printf("This is loader\n");	85	printf("This is loader\n");
86	getchar();	86	getchar();
87		87
88	file_name = "/tetris";	88	file_name = "/test";
89	rc = elf_load_file(file_name, &header);	89	rc = elf_load_file(file_name, &header);
90	printf("open and read '%s'...\n", file_name);	90	printf("open and read '%s'...\n", file_name);
91		91
92	if (rc < 0) {	92	if (rc < 0) {
93	printf("failed to load program\n");	93	printf("failed to load program\n");
94	return 1;	94	return 1;
95	}	95	}
96		96
97	printf("run program\n");	97	printf("run program\n");
98	elf_run(&header);	98	elf_run(&header);
99		99
100	/* not reached */	100	/* not reached */
101	return 0;	101	return 0;
102	}	102	}
103		103
104	/** @}	104	/** @}
105	*/	105	*/
106		106

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/srv/loader/main.c @ 3504 – Rev 2929 → 2932