Update TODO list.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4735 c046a42c-6fe2-441c-8c8c-71466251a162

target-mips/TODO

@@ -30,6 +30,11 @@ General
   each ASID change. Using the MMU modes to implement ASIDs hinges on
   implementing the global bit efficiently.
 - save/restore of the CPU state is not implemented (see machine.c).
+- Improve cpu state handling:
+  Step 1) Collect all the TC state in a single struct, so we need only
+          a single global pointer per TC.
+  Step 2) Use only a single TC context as working context, and copy the
+          contexts on TC switch. Likewise for FPU contexts.
 
 MIPS64
 ------