diff options
Diffstat (limited to 'libbsd/libdl/dl_main.c')
| -rw-r--r-- | libbsd/libdl/dl_main.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/libbsd/libdl/dl_main.c b/libbsd/libdl/dl_main.c new file mode 100644 index 0000000..70e23fe --- /dev/null +++ b/libbsd/libdl/dl_main.c @@ -0,0 +1,178 @@ +/* + * Copyright 2018 Chris Johns <chrisj@rtems.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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#include <sys/param.h> + +#include <assert.h> +#include <ctype.h> +#include <errno.h> +#include <string.h> +#include <stdio.h> + +#include <dlfcn.h> + +#include <rtems.h> +#include <rtems/rtl/rtl-shell.h> +#include <rtems/rtl/rtl-trace.h> +#include <rtems/untar.h> + +#include "libbsd-dl-rootfs-tar.h" + +#define EXAMPLE_NAME "LIBBSD LIBDL 1" + +#define ARCHIVE_TRACE (RTEMS_RTL_TRACE_DETAIL | \ + RTEMS_RTL_TRACE_WARNING | \ + RTEMS_RTL_TRACE_LOAD | \ + RTEMS_RTL_TRACE_UNLOAD | \ + RTEMS_RTL_TRACE_SYMBOL | \ + RTEMS_RTL_TRACE_RELOC | \ + RTEMS_RTL_TRACE_ALLOCATOR | \ + RTEMS_RTL_TRACE_UNRESOLVED | \ + RTEMS_RTL_TRACE_ARCHIVES | \ + RTEMS_RTL_TRACE_DEPENDENCY) +#define EXAMPLE_DEBUG_TRACE ARCHIVE_TRACE + +#define TARFILE_START libbsd_dl_rootfs_tar +#define TARFILE_SIZE libbsd_dl_rootfs_tar_size + +typedef int (*call_sig)(void); + +static void +dl_load_dump (void) +{ +#if LIBDL01_CMDS + char* list[] = { "rtl", "list", NULL }; + char* sym[] = { "rtl", "sym", NULL }; + printf ("RTL List:\n"); + rtems_rtl_shell_command (2, list); + printf ("RTL Sym:\n"); + rtems_rtl_shell_command (2, sym); +#endif +} + +static void +example_fatal_error (void) +{ + rtems_status_code sc = rtems_task_wake_after( 3 ); + assert(sc == RTEMS_SUCCESSFUL); + assert( 0 ); +} + +rtems_task Init( + rtems_task_argument ignored +) +{ + const char* name = "dl_libbsd.o"; + void* handle; + int unresolved = 0; + call_sig call; + int te; + + puts( "\n\nExample: " EXAMPLE_NAME ); + + te = Untar_FromMemory((void *)TARFILE_START, (size_t)TARFILE_SIZE); + if (te != 0) + { + printf("untar failed: %d\n", te); + example_fatal_error(); + } + +#if EXAMPLE_DEBUG_TRACE + rtems_rtl_trace_set_mask (EXAMPLE_DEBUG_TRACE); +#endif + + printf("load: %s\n", name); + + handle = dlopen (name, RTLD_NOW | RTLD_GLOBAL); + if (handle == NULL) + { + printf("error: loading %s failed: %s\n", name, dlerror ()); + example_fatal_error (); + } + + printf ("handle: %p loaded\n", handle); + + if (dlinfo (handle, RTLD_DI_UNRESOLVED, &unresolved) != 0) + { + printf ("error: cannot get module's unresolved status\n"); + example_fatal_error (); + } + + printf ("unresolved: %p: %s \n", handle, unresolved == 0 ? "resolved" : "UNRESOLVED"); + + if (unresolved != 0) + { + printf ("error: module has unresolved externals\n"); + example_fatal_error (); + } + + call = dlsym (handle, "rtems_main"); + if (call == NULL) + { + printf ("error: cannot find symbol: rtems_main\n"); + example_fatal_error (); + } + + call (); + + if (dlclose (handle) != 0) + { + printf ("error: unloading %s failed: %d\n", name, dlerror ()); + example_fatal_error (); + } +} + +/* + * Configure RTEMS. + */ +#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_STUB_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_ZERO_DRIVER +#define CONFIGURE_APPLICATION_NEEDS_LIBBLOCK + +#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 32 + +#define CONFIGURE_MAXIMUM_USER_EXTENSIONS 1 + +#define CONFIGURE_UNLIMITED_ALLOCATION_SIZE 32 +#define CONFIGURE_UNLIMITED_OBJECTS +#define CONFIGURE_UNIFIED_WORK_AREAS + +#define CONFIGURE_STACK_CHECKER_ENABLED + +#define CONFIGURE_BDBUF_BUFFER_MAX_SIZE (64 * 1024) +#define CONFIGURE_BDBUF_MAX_READ_AHEAD_BLOCKS 4 +#define CONFIGURE_BDBUF_CACHE_MEMORY_SIZE (1 * 1024 * 1024) + +#define CONFIGURE_RTEMS_INIT_TASKS_TABLE + +#define CONFIGURE_INIT_TASK_STACK_SIZE (32 * 1024) +#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES +#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_FLOATING_POINT + +#define CONFIGURE_INIT + +#include <rtems/confdefs.h> |