Cleaned up some of the Fault system.

arch/alpha/ev5.cc:
    Commented out the intr_post function since it's not used. If this really -is- needed, it should be moved into the fault class.
arch/alpha/faults.cc:
arch/alpha/faults.hh:
    Moved the fault invocation code into the fault class fully, and got rid of the need for isA.
cpu/exec_context.cc:
cpu/exec_context.hh:
    Removed the trap function from the ExecContext. The faults will execute normally in full system mode, but always panic in syscall emulation mode.
cpu/ozone/cpu.hh:
cpu/simple/cpu.hh:
    Changed the execution context executing a fault to a fault executing on the execution context.
sim/faults.cc:
    If not in full system mode, trying to invoke a fault causes a panic.
sim/faults.hh:
    Removed the isA function.

--HG--
extra : convert_revision : 894dc8f0755c8efc4b7ef5a09fb2cf7373042395

cpu/exec_context.cc

@@ -220,15 +220,3 @@ ExecContext::regStats(const string &name)
 #endif
 }
 
-void
-ExecContext::trap(Fault fault)
-{
-    //TheISA::trap(fault);    //One possible way to do it...
-
-    /** @todo: Going to hack it for now.  Do a true fixup later. */
-#if FULL_SYSTEM
-    fault->invoke(this);
-#else
-    fatal("fault (%d) detected @ PC 0x%08p", fault, readPC());
-#endif
-}