From e85144bff21445ef19864c38be87055045d95c35 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Tue, 7 Aug 2007 15:27:54 -0700
Subject: [PATCH] Statetrace: Make statetrace do string instructions all at
 once like m5 does.

--HG--
extra : convert_revision : 2103029077450e46f70077066708255310963d9d
---
 util/statetrace/arch/tracechild_amd64.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/util/statetrace/arch/tracechild_amd64.cc b/util/statetrace/arch/tracechild_amd64.cc
index 222923972..112ee793e 100644
--- a/util/statetrace/arch/tracechild_amd64.cc
+++ b/util/statetrace/arch/tracechild_amd64.cc
@@ -317,7 +317,15 @@ bool AMD64TraceChild::step()
         ptrace(PTRACE_POKEDATA, pid, ripAfterSyscall, buf);
     }
     else
-        ptraceSingleStep();
+    {
+        //Get all the way past repe and repne string instructions in one shot.
+        uint64_t newPC, origPC = getPC();
+        do
+        {
+            ptraceSingleStep();
+            newPC = getPC();
+        } while(newPC == origPC);
+    }
 }
 
 TraceChild * genTraceChild()
-- 
2.30.2