lahf/sahf cpuid test

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4523 c046a42c-6fe2-441c-8c8c-71466251a162

target-i386/TODO

@@ -1,16 +1,10 @@
 Correctness issues:
 
 - some eflags manipulation incorrectly reset the bit 0x2.
-- rework eflags optimization (will be a consequence of TCG port)
 - SVM: rework the implementation: simplify code, move most intercept
   tests as dynamic, correct segment access, verify exception safety,
   cpu save/restore, SMM save/restore. 
-- x86_64: fxsave/fxrestore intel/amd differences
 - x86_64: lcall/ljmp intel/amd differences ?
-- x86_64: cmpxchgl intel/amd differences ?
-- x86_64: cmovl intel/amd differences ?
-- cmpxchg16b + cmpxchg8b cpuid test
-- x86: monitor invalid 
 - better code fetch (different exception handling + CS.limit support)
 - user/kernel PUSHL/POPL in helper.c
 - add missing cpuid tests
@@ -27,11 +21,12 @@ Correctness issues:
 
 Optimizations/Features:
 
-- finish TCG port
 - add SVM nested paging support
 - add VMX support
 - add AVX support
 - add SSE5 support
+- fxsave/fxrstor AMD extensions
+- improve monitor/mwait support
 - faster EFLAGS update: consider SZAP, C, O can be updated separately
   with a bit field in CC_OP and more state variables.
 - evaluate x87 stack pointer statically