Improve debugger in MIPS simulator.

runtime/vm/flags.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flags.h"
 
 #include "platform/assert.h"
 #include "vm/json_stream.h"
 #include "vm/os.h"
 
@@ skipping 190 matching lines @@
         return false;
       }
       break;
     }
     case Flag::kString: {
       *flag->charp_ptr_ = argument == NULL ? NULL : strdup(argument);
       break;
     }
     case Flag::kInteger: {
       char* endptr = NULL;
-      int val = strtol(argument, &endptr, 10);
-      if (endptr != argument) {
+      const intptr_t len = strlen(argument);
+      int base = 10;
+      if ((len > 2) && (argument[0] == '0') && (argument[1] == 'x')) {
+        base = 16;
+      }
+      int val = strtol(argument, &endptr, base);
+      if (endptr == argument + len) {
         *flag->int_ptr_ = val;
+      } else {
+        return false;
       }
       break;
     }
     case Flag::kFunc: {
       if (strcmp(argument, "true") == 0) {
         (flag->handler_)(true);
       } else if (strcmp(argument, "false") == 0) {
         (flag->handler_)(false);
       } else {
         return false;
@@ skipping 209 matching lines @@
     for (intptr_t i = 0; i < num_flags_; ++i) {
       Flag* flag = flags_[i];
       if (flag->changed_) {
         PrintFlagToJSONArray(&jsarr, flag);
       }
     }
   }
 }
 
 }  // namespace dart