Rev 2929 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2928 | svoboda | 1 | /* |
| 2 | * Copyright (c) 2008 Jiri Svoboda |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup loader |
||
| 30 | * @brief Loads and runs programs from VFS. |
||
| 31 | * @{ |
||
| 32 | */ |
||
| 33 | /** |
||
| 34 | * @file |
||
| 35 | */ |
||
| 36 | |||
| 37 | #include <stdio.h> |
||
| 38 | #include <unistd.h> |
||
| 39 | #include <fcntl.h> |
||
| 40 | #include <sys/types.h> |
||
| 41 | |||
| 42 | #include "elf.h" |
||
| 43 | |||
| 44 | unsigned int elf_load(int fd, elf_header_t *header); |
||
| 45 | |||
| 46 | typedef void (*entry_point_t)(void); |
||
| 47 | |||
| 48 | int elf_load_file(char *file_name, elf_header_t *header) |
||
| 49 | { |
||
| 50 | int fd; |
||
| 51 | int rc; |
||
| 52 | |||
| 53 | printf("open and read '%s'...\n", file_name); |
||
| 54 | |||
| 55 | fd = open(file_name, 0); |
||
| 56 | if (fd < 0) { |
||
| 57 | printf("failed opening file\n"); |
||
| 58 | return -1; |
||
| 59 | } |
||
| 60 | |||
| 61 | rc = elf_load(fd, header); |
||
| 62 | printf("elf_load() -> %d\n", rc); |
||
| 63 | |||
| 64 | close(fd); |
||
| 65 | |||
| 66 | return rc; |
||
| 67 | } |
||
| 68 | |||
| 69 | void elf_run(elf_header_t *header) |
||
| 70 | { |
||
| 71 | entry_point_t entry_point; |
||
| 72 | |||
| 73 | entry_point = (entry_point_t)header->e_entry; |
||
| 74 | (*entry_point)(); |
||
| 75 | |||
| 76 | /* not reached */ |
||
| 77 | } |
||
| 78 | |||
| 79 | int main(int argc, char *argv[]) |
||
| 80 | { |
||
| 81 | elf_header_t header; |
||
| 82 | char *file_name; |
||
| 83 | int rc; |
||
| 84 | |||
| 85 | printf("This is loader\n"); |
||
| 86 | getchar(); |
||
| 87 | |||
| 88 | file_name = "/tetris"; |
||
| 89 | rc = elf_load_file(file_name, &header); |
||
| 90 | printf("open and read '%s'...\n", file_name); |
||
| 91 | |||
| 92 | if (rc < 0) { |
||
| 93 | printf("failed to load program\n"); |
||
| 94 | return 1; |
||
| 95 | } |
||
| 96 | |||
| 97 | printf("run program\n"); |
||
| 98 | elf_run(&header); |
||
| 99 | |||
| 100 | /* not reached */ |
||
| 101 | return 0; |
||
| 102 | } |
||
| 103 | |||
| 104 | /** @} |
||
| 105 | */ |