Copy implementations

arch/alpha/isa_desc:
    Need to return fault for copy operations.
cpu/exec_context.hh:
    Add temporary storage to pass source address from copy load to copy store
cpu/simple_cpu/simple_cpu.cc:
    Implement copy functions.
cpu/simple_cpu/simple_cpu.hh:
    Return fault

--HG--
extra : convert_revision : 98e5ce563449d6057ba45c70eece9235f1649a90

1 files changed, 12 insertions, 0 deletions

diff --git a/cpu/exec_context.hh b/cpu/exec_context.hh
index e9dc5efec..ccb01f486 100644
--- a/cpu/exec_context.hh
+++ b/cpu/exec_context.hh
@@ -153,6 +153,18 @@ class ExecContext
 
 #endif
 
+    /**
+     * Temporary storage to pass the source address from copy_load to
+     * copy_store.
+     * @todo Remove this temporary when we have a better way to do it.
+     */
+    Addr copySrcAddr;
+    /**
+     * Temp storage for the physical source address of a copy.
+     * @todo Remove this temporary when we have a better way to do it.
+     */
+    Addr copySrcPhysAddr;
+
 
     /*
      * number of executed instructions, for matching with syscall trace