O3CPU: Undo Gabe's changes to remove hwrei and simpalcheck from O3 CPU. Removing hwrei causes

the instruction after the hwrei to be fetched before the ITB/DTB_CM register is updated in a call pal
call sys and thus the translation fails because the user is attempting to access a super page address.

Minimally, it seems as though some sort of fetch stall or refetch after a hwrei is required. I think
this works currently because the hwrei uses the exec context interface, and the o3 stalls when that occurs.

Additionally, these changes don't update the LOCK register and probably break ll/sc. Both o3 changes were
removed since a great deal of manual patching would be required to only remove the hwrei change.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/cpu/checker/cpu.hh b/src/cpu/checker/cpu.hh
index 0f01f17c5..5b3c4582c 100644
--- a/src/cpu/checker/cpu.hh
+++ b/src/cpu/checker/cpu.hh
@@ -336,7 +336,9 @@ class CheckerCPU : public BaseCPU
     void translateDataReadReq(Request *req);
 
 #if FULL_SYSTEM
+    Fault hwrei() { return thread->hwrei(); }
     void ev5_trap(Fault fault) { fault->invoke(tc); }
+    bool simPalCheck(int palFunc) { return thread->simPalCheck(palFunc); }
 #else
     // Assume that the normal CPU's call to syscall was successful.
     // The checker's state would have already been updated by the syscall.