CheckerCPU: Re-factor CheckerCPU to be compatible with current gem5

Brings the CheckerCPU back to life to allow FS and SE checking of the
O3CPU.  These changes have only been tested with the ARM ISA.  Other
ISAs potentially require modification.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/cpu/o3/commit_impl.hh b/src/cpu/o3/commit_impl.hh
index 9ff31a622..cb2f9a634 100644
--- a/src/cpu/o3/commit_impl.hh
+++ b/src/cpu/o3/commit_impl.hh
@@ -728,6 +728,12 @@ DefaultCommit<Impl>::handleInterrupt()
         assert(!thread[0]->inSyscall);
         thread[0]->inSyscall = true;
 
+#if USE_CHECKER
+        if (cpu->checker) {
+            cpu->checker->handlePendingInt();
+        }
+#endif
+
         // CPU will handle interrupt.
         cpu->processInterrupts(interrupt);
 
@@ -775,7 +781,8 @@ DefaultCommit<Impl>::commit()
 {
 
 #if FULL_SYSTEM
-    // Check for any interrupt that we've already squashed for and start processing it.
+    // Check for any interrupt that we've already squashed for and
+    // start processing it.
     if (interrupt != NoFault)
         handleInterrupt();
 
@@ -1133,7 +1140,8 @@ DefaultCommit<Impl>::commitHead(DynInstPtr &head_inst, unsigned inst_num)
         head_inst->setCompleted();
 
 #if USE_CHECKER
-        if (cpu->checker && head_inst->isStore()) {
+        if (cpu->checker) {
+            // Need to check the instruction before its fault is processed
             cpu->checker->verify(head_inst);
         }
 #endif