/**************************************************************************** * examples/elf/elf_main.c * * Copyright (C) 2012, 2017-2018 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 "platform/cxxinitialize.h" #if defined(CONFIG_EXAMPLES_ELF_ROMFS) # include "tests/romfs.h" #elif defined(CONFIG_EXAMPLES_ELF_CROMFS) # include "tests/cromfs.h" #elif !defined(CONFIG_EXAMPLES_ELF_EXTERN) # error "No file system selected" #endif #include "tests/dirlist.h" /**************************************************************************** * Pre-processor 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 #ifdef CONFIG_DISABLE_MOUNTPOINT # error "You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT in your configuration file" #endif #if defined(CONFIG_EXAMPLES_ELF_ROMFS) /* 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 #elif defined(CONFIG_EXAMPLES_ELF_CROMFS) /* Describe the CROMFS file system */ # define MOUNTPT "/mnt/cromfs" #elif defined(CONFIG_EXAMPLES_ELF_EXTERN) /* Describe the external file system */ # define MOUNTPT "/mnt/" CONFIG_EXAMPLES_ELF_FSTYPE #else # error "No file system selected" #endif /* If CONFIG_DEBUG_FEATURES is enabled, use info/err instead of printf so that the * output will be synchronous with the debug output. */ #ifdef CONFIG_CPP_HAVE_VARARGS # ifdef CONFIG_DEBUG_INFO # define message(format, ...) syslog(LOG_INFO, format, ##__VA_ARGS__) # else # define message(format, ...) printf(format, ##__VA_ARGS__) # endif # ifdef CONFIG_DEBUG_ERROR # define errmsg(format, ...) syslog(LOG_ERR, format, ##__VA_ARGS__) # else # define errmsg(format, ...) fprintf(stderr, format, ##__VA_ARGS__) # endif #else # ifdef CONFIG_DEBUG_INFO # define message _info # else # define message printf # endif # ifdef CONFIG_DEBUG_ERROR # define errmsg _err # else # define errmsg printf # endif #endif /**************************************************************************** * 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_LIB_ENVPATH static char fullpath[128]; #endif /**************************************************************************** * Symbols from Auto-Generated Code ****************************************************************************/ extern const struct symtab_s g_elf_exports[]; extern const int g_elf_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 ****************************************************************************/ #ifdef BUILD_MODULE int main(int argc, FAR char *argv[]) #else int elf_main(int argc, char *argv[]) #endif { #ifdef CONFIG_EXAMPLES_ELF_FSREMOVEABLE struct stat buf; #endif FAR char *args[1]; int ret; int i; #if defined(CONFIG_EXAMPLES_ELF_CXXINITIALIZE) /* Call all C++ static constructors */ up_cxxinitialize(); #endif /* Initialize the memory monitor */ mm_initmonitor(); #if defined(CONFIG_EXAMPLES_ELF_ROMFS) #if defined(CONFIG_BUILD_FLAT) /* This example violates the portable POSIX interface by calling the OS * internal function romdisk_register() (aka ramdisk_register()). We can * squeak by in with this violation in the FLAT build mode, but not in * other build modes. In other build modes, the following logic must be * performed in the OS board initialization logic (where it really belongs * anyway). */ /* 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) { errmsg("ERROR: romdisk_register failed: %d\n", ret); exit(1); } mm_update(&g_mmstep, "after romdisk_register"); #endif /* Mount the ROMFS 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) { errmsg("ERROR: mount(%s,%s,romfs) failed: %s\n", CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, errno); } #elif defined(CONFIG_EXAMPLES_ELF_CROMFS) /* Mount the CROMFS file system */ message("Mounting CROMFS filesystem at target=%s\n", MOUNTPT); ret = mount(NULL, MOUNTPT, "cromfs", MS_RDONLY, NULL); if (ret < 0) { errmsg("ERROR: mount(%s, cromfs) failed: %d\n", MOUNTPT, errno); } #elif defined(CONFIG_EXAMPLES_ELF_EXTERN) /* An external file system is being used */ #if defined(CONFIG_EXAMPLES_ELF_FSMOUNT) #if defined(CONFIG_EXAMPLES_ELF_FSREMOVEABLE) /* The file system is removable, wait until the block driver is available */ do { ret = stat(CONFIG_EXAMPLES_ELF_DEVPATH, &buf); if (ret < 0) { int errcode = errno; if (errcode == ENOENT) { printf("%s does not exist. Waiting...\n", CONFIG_EXAMPLES_ELF_DEVPATH); sleep(1); } else { printf("ERROR: stat(%s) failed: %d Aborting...\n", CONFIG_EXAMPLES_ELF_DEVPATH, errcode); exit(EXIT_FAILURE); } } else if (!S_ISBLK(buf.st_mode)) { printf("ERROR: stat(%s) exists but is not a block driver: %04x\n", CONFIG_EXAMPLES_ELF_DEVPATH, buf.st_mode); exit(EXIT_FAILURE); } } while (ret < 0); #endif /* Mount the external file system */ message("Mounting %s filesystem at target=%s\n", CONFIG_EXAMPLES_ELF_FSTYPE, MOUNTPT); ret = mount(CONFIG_EXAMPLES_ELF_DEVPATH, MOUNTPT, CONFIG_EXAMPLES_ELF_FSTYPE, MS_RDONLY, NULL); if (ret < 0) { errmsg("ERROR: mount(%s, %s, %s) failed: %d\n",\ CONFIG_EXAMPLES_ELF_DEVPATH, CONFIG_EXAMPLES_ELF_FSTYPE, MOUNTPT, errno); } #endif #else # Warning "No file system selected" #endif mm_update(&g_mmstep, "after mount"); #if defined(CONFIG_LIB_ENVPATH) && !defined(CONFIG_PATH_INITIAL) /* 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. */ (void)setenv("PATH", MOUNTPT, 1); #endif /* Now exercise every program in the ROMFS file system */ for (i = 0; dirlist[i]; i++) { FAR const char *filename; /* Output a separator so that we can clearly discriminate the output of * this program from the others. */ testheader(dirlist[i]); /* 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_LIB_ENVPATH filename = dirlist[i]; #else snprintf(fullpath, 128, "%s/%s", MOUNTPT, dirlist[i]); filename = fullpath; #endif /* Execute the ELF module. * * NOTE: The standard posix_spawn() interface would be more correct. * The non-standard exec() function is used because it provides a * simple way to pass the symbol table information needed to load the * program. posix_spawn(), on the other hand, will assume that symbol * table information is available within the OS. */ args[0] = NULL; ret = exec(filename, args, g_elf_exports, g_elf_nexports); mm_update(&g_mmstep, "after exec"); if (ret < 0) { errmsg("ERROR: exec(%s) failed: %d\n", dirlist[i], errno); } else { message("Wait a bit for test completion\n"); sleep(4); } mm_update(&g_mmstep, "after program execution"); } mm_update(&g_mmstep, "End-of-Test"); return 0; }