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Add an example for testing the ELF loader
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5260 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
@@ -0,0 +1,224 @@
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/****************************************************************************
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* examples/elf/elf_main.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <sys/mount.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <pthread.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/ramdisk.h>
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#include <nuttx/binfmt/binfmt.h>
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#include <nuttx/binfmt/elf.h>
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#include "tests/romfs.h"
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#include "tests/dirlist.h"
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#include "tests/symtab.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Check configuration. This is not all of the configuration settings that
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* are required -- only the more obvious.
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*/
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#if CONFIG_NFILE_DESCRIPTORS < 1
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# error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file"
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#endif
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#ifndef CONFIG_ELF
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# error "You must select CONFIG_ELF in your configuration file"
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#endif
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#ifndef CONFIG_FS_ROMFS
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# error "You must select CONFIG_FS_ROMFS in your configuration file"
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#endif
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#ifdef CONFIG_DISABLE_MOUNTPOINT
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# error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file"
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#endif
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#ifdef CONFIG_BINFMT_DISABLE
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# error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
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#endif
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/* Describe the ROMFS file system */
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#define SECTORSIZE 512
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#define NSECTORS(b) (((b)+SECTORSIZE-1)/SECTORSIZE)
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#define ROMFSDEV "/dev/ram0"
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#define MOUNTPT "/mnt/romfs"
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/* If CONFIG_DEBUG is enabled, use dbg instead of printf so that the
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* output will be synchronous with the debug output.
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*/
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG
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# define message(format, arg...) dbg(format, ##arg)
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# define err(format, arg...) dbg(format, ##arg)
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# else
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# define message(format, arg...) printf(format, ##arg)
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# define err(format, arg...) fprintf(stderr, format, ##arg)
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# endif
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#else
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# ifdef CONFIG_DEBUG
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# define message dbg
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# define err dbg
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# else
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# define message printf
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# define err printf
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# endif
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const char delimiter[] =
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"****************************************************************************";
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static char path[128];
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: testheader
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****************************************************************************/
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static inline void testheader(FAR const char *progname)
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{
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message("\n%s\n* Executing %s\n%s\n\n", delimiter, progname, delimiter);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: elf_main
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****************************************************************************/
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int elf_main(int argc, char *argv[])
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{
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struct binary_s bin;
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int ret;
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int i;
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/* Initialize the ELF binary loader */
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message("Initializing the ELF binary loader\n");
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ret = elf_initialize();
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if (ret < 0)
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{
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err("ERROR: Initialization of the ELF loader failed: %d\n", ret);
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exit(1);
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}
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/* Create a ROM disk for the ROMFS filesystem */
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message("Registering romdisk\n");
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ret = romdisk_register(0, romfs_img, NSECTORS(romfs_img_len), SECTORSIZE);
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if (ret < 0)
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{
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err("ERROR: romdisk_register failed: %d\n", ret);
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elf_uninitialize();
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exit(1);
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}
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/* Mount the file system */
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message("Mounting ROMFS filesystem at target=%s with source=%s\n",
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MOUNTPT, ROMFSDEV);
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ret = mount(ROMFSDEV, MOUNTPT, "romfs", MS_RDONLY, NULL);
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if (ret < 0)
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{
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err("ERROR: mount(%s,%s,romfs) failed: %s\n",
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ROMFSDEV, MOUNTPT, errno);
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elf_uninitialize();
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}
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/* Now excercise every progrm in the ROMFS file system */
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for (i = 0; dirlist[i]; i++)
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{
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testheader(dirlist[i]);
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memset(&bin, 0, sizeof(struct binary_s));
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snprintf(path, 128, "%s/%s", MOUNTPT, dirlist[i]);
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bin.filename = path;
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bin.exports = exports;
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bin.nexports = NEXPORTS;
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ret = load_module(&bin);
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if (ret < 0)
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{
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err("ERROR: Failed to load program '%s'\n", dirlist[i]);
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exit(1);
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}
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ret = exec_module(&bin, 50);
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if (ret < 0)
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{
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err("ERROR: Failed to execute program '%s'\n", dirlist[i]);
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unload_module(&bin);
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}
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message("Wait a bit for test completion\n");
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sleep(4);
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}
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message("End-of-Test.. Exit-ing\n");
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return 0;
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}
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