auto import from //depot/cupcake/@135843
diff --git a/tools/lsd/main.c b/tools/lsd/main.c
new file mode 100644
index 0000000..f29157a
--- /dev/null
+++ b/tools/lsd/main.c
@@ -0,0 +1,67 @@
+/* TODO:
+ 1. check the ARM EABI version--this works for versions 1 and 2.
+ 2. use a more-intelligent approach to finding the symbol table, symbol-string
+ table, and the .dynamic section.
+ 3. fix the determination of the host and ELF-file endianness
+ 4. write the help screen
+*/
+
+#include <stdio.h>
+#include <common.h>
+#include <debug.h>
+#include <libelf.h>
+#include <elf.h>
+#include <gelf.h>
+#include <cmdline.h>
+#include <string.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <lsd.h>
+
+/* Flag set by --verbose. This variable is global as it is accessed by the
+ macro INFO() in multiple compilation unites. */
+int verbose_flag = 0;
+/* Flag set by --quiet. This variable is global as it is accessed by the
+ macro PRINT() in multiple compilation unites. */
+int quiet_flag = 0;
+
+int main(int argc, char **argv)
+{
+ char **lookup_dirs = NULL;
+ int num_lookup_dirs;
+ int print_info;
+ int list_needed_libs;
+
+ /* Do not issue INFO() statements before you call get_options() to set
+ the verbose flag as necessary.
+ */
+
+ int first = get_options(argc, argv,
+ &list_needed_libs,
+ &print_info,
+ &lookup_dirs,
+ &num_lookup_dirs,
+ &verbose_flag);
+
+ if (first == argc) {
+ print_help();
+ FAILIF(1, "You must specify at least one input ELF file!\n");
+ }
+
+ /* Check to see whether the ELF library is current. */
+ FAILIF (elf_version(EV_CURRENT) == EV_NONE, "libelf is out of date!\n");
+
+ /* List symbol dependencies... */
+ lsd(&argv[first], argc - first,
+ list_needed_libs, print_info,
+ lookup_dirs, num_lookup_dirs);
+
+ FREE(lookup_dirs);
+
+ return 0;
+}
+