Added -h command line option

diff --git a/kernel/driver.cc b/kernel/driver.cc
index ce38f59e8473d75f3745cc98e6a96ef83ce4745f..52f10752bfd90bf2724441851e833d6fef7cc2ec 100644 (file)
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -473,7 +473,7 @@ int main(int argc, char **argv)
        }
 
        int opt;
-       while ((opt = getopt(argc, argv, "VSm:f:b:o:p:l:qv:ts:c:")) != -1)
+       while ((opt = getopt(argc, argv, "VSm:f:h:b:o:p:l:qv:ts:c:")) != -1)
        {
                switch (opt)
                {
@@ -499,6 +499,9 @@ int main(int argc, char **argv)
                case 'f':
                        frontend_command = optarg;
                        break;
+               case 'h':
+                       passes_commands.push_back(stringf("help %s", optarg));
+                       break;
                case 'b':
                        backend_command = optarg;
                        break;
@@ -536,7 +539,7 @@ int main(int argc, char **argv)
                        break;
                default:
                        fprintf(stderr, "\n");
-                       fprintf(stderr, "Usage: %s [-V] [-S] [-q] [-v <level>[-t] [-l <logfile>] [-o <outfile>] [-f <frontend>]\n", argv[0]);
+                       fprintf(stderr, "Usage: %s [-V] [-S] [-q] [-v <level>[-t] [-l <logfile>] [-o <outfile>] [-f <frontend>] [-h cmd] \\\n", argv[0]);
                        fprintf(stderr, "       %*s[{-s|-c} <scriptfile>] [-p <pass> [-p ..]] [-b <backend>] [-m <module_file>] [<infile> [..]]\n", int(strlen(argv[0])+1), "");
                        fprintf(stderr, "\n");
                        fprintf(stderr, "    -q\n");
@@ -560,6 +563,9 @@ int main(int argc, char **argv)
                        fprintf(stderr, "    -f backend\n");
                        fprintf(stderr, "        use the specified front for the input files on the command line\n");
                        fprintf(stderr, "\n");
+                       fprintf(stderr, "    -h command\n");
+                       fprintf(stderr, "        print the help message for the specified command\n");
+                       fprintf(stderr, "\n");
                        fprintf(stderr, "    -s scriptfile\n");
                        fprintf(stderr, "        execute the commands in the script file\n");
                        fprintf(stderr, "\n");