types: add a type for thread IDs and try to use it everywhere

1 files changed, 3 insertions, 2 deletions

diff --git a/src/cpu/simple/base.hh b/src/cpu/simple/base.hh
index e80606388..4e71d677e 100644
--- a/src/cpu/simple/base.hh
+++ b/src/cpu/simple/base.hh
@@ -399,13 +399,14 @@ class BaseSimpleCPU : public BaseCPU
         thread->setStCondFailures(sc_failures);
     }
 
-     MiscReg readRegOtherThread(int regIdx, int tid = -1)
+     MiscReg readRegOtherThread(int regIdx, ThreadID tid = InvalidThreadID)
      {
         panic("Simple CPU models do not support multithreaded "
               "register access.\n");
      }
 
-     void setRegOtherThread(int regIdx, const MiscReg &val, int tid = -1)
+     void setRegOtherThread(int regIdx, const MiscReg &val,
+                            ThreadID tid = InvalidThreadID)
      {
         panic("Simple CPU models do not support multithreaded "
               "register access.\n");