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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-25 20:06:46 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-25 20:06:46 +0000 |
commit | 5ae419f6845ff28bcbdb339cdfb66f6b2e46f9ab (patch) | |
tree | 871dcd80c04a5b65c613cbc80c92a83d7bbbbe46 /apps/examples/elf/elf_main | |
parent | 8cbc20e05c24cc3e2b0b4774f4850357b9f46595 (diff) | |
download | px4-nuttx-5ae419f6845ff28bcbdb339cdfb66f6b2e46f9ab.tar.gz px4-nuttx-5ae419f6845ff28bcbdb339cdfb66f6b2e46f9ab.tar.bz2 px4-nuttx-5ae419f6845ff28bcbdb339cdfb66f6b2e46f9ab.zip |
Add an example for testing the ELF loader
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5260 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'apps/examples/elf/elf_main')
-rw-r--r-- | apps/examples/elf/elf_main | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/apps/examples/elf/elf_main b/apps/examples/elf/elf_main new file mode 100644 index 000000000..c58b13ffc --- /dev/null +++ b/apps/examples/elf/elf_main @@ -0,0 +1,224 @@ +/**************************************************************************** + * examples/elf/elf_main.c + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/mount.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <pthread.h> +#include <debug.h> +#include <errno.h> + +#include <nuttx/ramdisk.h> +#include <nuttx/binfmt/binfmt.h> +#include <nuttx/binfmt/elf.h> + +#include "tests/romfs.h" +#include "tests/dirlist.h" +#include "tests/symtab.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Check configuration. This is not all of the configuration settings that + * are required -- only the more obvious. + */ + +#if CONFIG_NFILE_DESCRIPTORS < 1 +# error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file" +#endif + +#ifndef CONFIG_ELF +# error "You must select CONFIG_ELF in your configuration file" +#endif + +#ifndef CONFIG_FS_ROMFS +# error "You must select CONFIG_FS_ROMFS in your configuration file" +#endif + +#ifdef CONFIG_DISABLE_MOUNTPOINT +# error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file" +#endif + +#ifdef CONFIG_BINFMT_DISABLE +# error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file" +#endif + +/* Describe the ROMFS file system */ + +#define SECTORSIZE 512 +#define NSECTORS(b) (((b)+SECTORSIZE-1)/SECTORSIZE) +#define ROMFSDEV "/dev/ram0" +#define MOUNTPT "/mnt/romfs" + +/* If CONFIG_DEBUG is enabled, use dbg instead of printf so that the + * output will be synchronous with the debug output. + */ + +#ifdef CONFIG_CPP_HAVE_VARARGS +# ifdef CONFIG_DEBUG +# define message(format, arg...) dbg(format, ##arg) +# define err(format, arg...) dbg(format, ##arg) +# else +# define message(format, arg...) printf(format, ##arg) +# define err(format, arg...) fprintf(stderr, format, ##arg) +# endif +#else +# ifdef CONFIG_DEBUG +# define message dbg +# define err dbg +# else +# define message printf +# define err printf +# endif +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static const char delimiter[] = + "****************************************************************************"; + +static char path[128]; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: testheader + ****************************************************************************/ + +static inline void testheader(FAR const char *progname) +{ + message("\n%s\n* Executing %s\n%s\n\n", delimiter, progname, delimiter); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: elf_main + ****************************************************************************/ + +int elf_main(int argc, char *argv[]) +{ + struct binary_s bin; + int ret; + int i; + + /* Initialize the ELF binary loader */ + + message("Initializing the ELF binary loader\n"); + ret = elf_initialize(); + if (ret < 0) + { + err("ERROR: Initialization of the ELF loader failed: %d\n", ret); + exit(1); + } + + /* Create a ROM disk for the ROMFS filesystem */ + + message("Registering romdisk\n"); + ret = romdisk_register(0, romfs_img, NSECTORS(romfs_img_len), SECTORSIZE); + if (ret < 0) + { + err("ERROR: romdisk_register failed: %d\n", ret); + elf_uninitialize(); + exit(1); + } + + /* Mount the file system */ + + message("Mounting ROMFS filesystem at target=%s with source=%s\n", + MOUNTPT, ROMFSDEV); + + ret = mount(ROMFSDEV, MOUNTPT, "romfs", MS_RDONLY, NULL); + if (ret < 0) + { + err("ERROR: mount(%s,%s,romfs) failed: %s\n", + ROMFSDEV, MOUNTPT, errno); + elf_uninitialize(); + } + + /* Now excercise every progrm in the ROMFS file system */ + + for (i = 0; dirlist[i]; i++) + { + testheader(dirlist[i]); + + memset(&bin, 0, sizeof(struct binary_s)); + snprintf(path, 128, "%s/%s", MOUNTPT, dirlist[i]); + + bin.filename = path; + bin.exports = exports; + bin.nexports = NEXPORTS; + + ret = load_module(&bin); + if (ret < 0) + { + err("ERROR: Failed to load program '%s'\n", dirlist[i]); + exit(1); + } + + ret = exec_module(&bin, 50); + if (ret < 0) + { + err("ERROR: Failed to execute program '%s'\n", dirlist[i]); + unload_module(&bin); + } + + message("Wait a bit for test completion\n"); + sleep(4); + } + + message("End-of-Test.. Exit-ing\n"); + return 0; +} |