check loads using tainted registers, set USL dst as tainted

1 files changed, 12 insertions, 1 deletions

diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh
index 6684a4765..3ddf25095 100644
--- a/src/cpu/base_dyn_inst.hh
+++ b/src/cpu/base_dyn_inst.hh
@@ -480,11 +480,22 @@ class BaseDynInst : public ExecContext, public RefCounted
 
     void taintDestRegs(void)
     {
-        for (auto dstreg: _destRegIdx) {
+        for (size_t i = 0; i < numDestRegs(); i++) {
+            auto dstreg = _destRegIdx[i];
             cpu->setTaint(dstreg);
         }
     }
 
+    bool srcTainted(void)
+    {
+        bool result = false;
+        for (size_t i = 0; i < numSrcRegs(); i++) {
+            auto src = _srcRegIdx[i];
+            result |= cpu->regTainted(src);
+        }
+        return result;
+    }
+
     /** Renames a source logical register to the physical register which
      *  has/will produce that logical register's result.
      *  @todo: add in whether or not the source register is ready.