| 0,0 → 1,105 |
|---|
| /* |
| * 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 = "/tetris"; |
| 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; |
| } |
| |
| /** @} |
| */ |