/**************************************************************************** * examples/elf/elf_main.c * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include "tests/romfs.h" #include "tests/dirlist.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 #ifdef CONFIG_BINFMT_DISABLE # error "The binary loader is disabled (CONFIG_BINFMT_DISABLE)!" #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 MOUNTPT "/mnt/romfs" #ifndef CONFIG_EXAMPLES_ELF_DEVMINOR # define CONFIG_EXAMPLES_ELF_DEVMINOR 0 #endif #ifndef CONFIG_EXAMPLES_ELF_DEVPATH # define CONFIG_EXAMPLES_ELF_DEVPATH "/dev/ram0" #endif /* 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 unsigned int g_mminitial; /* Initial memory usage */ static unsigned int g_mmstep; /* Memory Usage at beginning of test step */ static const char delimiter[] = "****************************************************************************"; #ifndef CONFIG_BINFMT_EXEPATH static char fullpath[128]; #endif /**************************************************************************** * Symbols from Auto-Generated Code ****************************************************************************/ extern const struct symtab_s exports[]; extern const int nexports; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: mm_update ****************************************************************************/ static void mm_update(FAR unsigned int *previous, FAR const char *msg) { struct mallinfo mmcurrent; /* Get the current memory usage */ #ifdef CONFIG_CAN_PASS_STRUCTS mmcurrent = mallinfo(); #else (void)mallinfo(&mmcurrent); #endif /* Show the change from the previous time */ printf("\nMemory Usage %s:\n", msg); printf(" Before: %8u After: %8u Change: %8d\n", *previous, mmcurrent.uordblks, (int)mmcurrent.uordblks - (int)*previous); /* Set up for the next test */ *previous = mmcurrent.uordblks; } /**************************************************************************** * Name: mm_initmonitor ****************************************************************************/ static void mm_initmonitor(void) { struct mallinfo mmcurrent; #ifdef CONFIG_CAN_PASS_STRUCTS mmcurrent = mallinfo(); #else (void)mallinfo(&mmcurrent); #endif g_mminitial = mmcurrent.uordblks; g_mmstep = mmcurrent.uordblks; printf("Initial memory usage: %d\n", mmcurrent.uordblks); } /**************************************************************************** * 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 memory monitor */ mm_initmonitor(); /* 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); } mm_update(&g_mmstep, "after elf_initialize"); /* Create a ROM disk for the ROMFS filesystem */ message("Registering romdisk at /dev/ram%d\n", CONFIG_EXAMPLES_ELF_DEVMINOR); ret = romdisk_register(CONFIG_EXAMPLES_ELF_DEVMINOR, (FAR uint8_t *)romfs_img, NSECTORS(romfs_img_len), SECTORSIZE); if (ret < 0) { err("ERROR: romdisk_register failed: %d\n", ret); elf_uninitialize(); exit(1); } mm_update(&g_mmstep, "after romdisk_register"); /* Mount the file system */ message("Mounting ROMFS filesystem at target=%s with source=%s\n", MOUNTPT, CONFIG_EXAMPLES_ELF_DEVPATH); ret = mount(CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, "romfs", MS_RDONLY, NULL); if (ret < 0) { err("ERROR: mount(%s,%s,romfs) failed: %s\n", CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, errno); elf_uninitialize(); } mm_update(&g_mmstep, "after mount"); /* Does the system support the PATH variable? Has the PATH variable * already been set? If YES and NO, then set the PATH variable to * the ROMFS mountpoint. */ #if defined(CONFIG_BINFMT_EXEPATH) && !defined(CONFIG_PATH_INITIAL) (void)setenv("PATH", MOUNTPT, 1); #endif /* Now excercise every program in the ROMFS file system */ for (i = 0; dirlist[i]; i++) { /* Output a seperated so that we can clearly discrinmate the output of * this program from the others. */ testheader(dirlist[i]); /* Initialize the binary_s structure */ memset(&bin, 0, sizeof(struct binary_s)); /* If the binary loader does not support the PATH variable, then * create the full path to the executable program. Otherwise, * use the relative path so that the binary loader will have to * search the PATH variable to find the executable. */ #ifdef CONFIG_BINFMT_EXEPATH bin.filename = dirlist[i]; #else snprintf(fullpath, 128, "%s/%s", MOUNTPT, dirlist[i]); bin.filename = fullpath; #endif bin.exports = exports; bin.nexports = nexports; /* Load the ELF module */ ret = load_module(&bin); if (ret < 0) { err("ERROR: Failed to load program '%s'\n", dirlist[i]); exit(1); } mm_update(&g_mmstep, "after load_module"); /* Execute the ELF module */ ret = exec_module(&bin); mm_update(&g_mmstep, "after exec_module"); if (ret < 0) { err("ERROR: Failed to execute program '%s'\n", dirlist[i]); } else { message("Wait a bit for test completion\n"); sleep(4); } unload_module(&bin); mm_update(&g_mmstep, "after unload_module"); } mm_update(&g_mmstep, "End-of-Test"); return 0; }