fesvr: Add +target-argument= flag to htif parsing

fesvr/htif.cc

@@ -328,6 +328,9 @@ void htif_t::parse_arguments(int argc, char ** argv)
       case HTIF_LONG_OPTIONS_OPTIND + 5:
         line_size = atoi(optarg);
         break;
+      case HTIF_LONG_OPTIONS_OPTIND + 6:
+        targs.push_back(optarg);
+        break;
       case '?':
         if (!opterr)
           break;
@@ -366,6 +369,10 @@ void htif_t::parse_arguments(int argc, char ** argv)
           c = HTIF_LONG_OPTIONS_OPTIND + 5;
           optarg = optarg + 23;
         }
+	else if (arg.find("+target-argument=") == 0) {
+	  c = HTIF_LONG_OPTIONS_OPTIND + 6;
+	  optarg = optarg + 17;
+	}
         else if (arg.find("+permissive-off") == 0) {
           if (opterr)
             throw std::invalid_argument("Found +permissive-off when not parsing permissively");

fesvr/htif.h

@@ -145,6 +145,7 @@ TARGET (RISC-V BINARY) OPTIONS\n\
 {"chroot",    required_argument, 0, HTIF_LONG_OPTIONS_OPTIND + 3 },     \
 {"payload",   required_argument, 0, HTIF_LONG_OPTIONS_OPTIND + 4 },     \
 {"signature-granularity",    optional_argument, 0, HTIF_LONG_OPTIONS_OPTIND + 5 },     \
+{"target-argument",          required_argument, 0, HTIF_LONG_OPTIONS_OPTIND + 6 },     \
 {0, 0, 0, 0}
 
 #endif // __HTIF_H