Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 1 REV 2.3 Manual page 1813

FXRSTOR: Restore FP and Intel
(Continued)
Virtual 8086 Mode Exceptions:
Same exceptions as in Real Address Mode; #AC for unaligned memory reference if the
current privilege level is 3; #PF (fault-code) for a page fault.
Additional Itanium System Environment Exceptions
Itanium Reg Faults
Itanium Mem Faults VHPT Data Fault, Data TLB Fault, Alternate Data TLB Fault, Data
State saved with FXSAVE and restored with FRSTOR (and vice versa) will result in
Notes:
incorrect restoration of state in the processor. The address size prefix will have the
usual effect on address calculation but will have no effect on the format of the FXRSTOR
image.
The use of Repeat (F2H, F3H) and Operand Size (66H) prefixes with FXRSTOR is
reserved. Different processor implementations may handle this prefix differently. Use of
this prefix with FXRSTOR risks incompatibility with future processors.
Volume 4: IA-32 SSE Instruction Reference
®
MMX™ Technology State and SSE State
Disabled FP Register Fault if PSR.dfl is 1, NaT Register
Consumption Fault
Page Not Present Fault, Data NaT Page Consumption Abort, Data
Key Miss Fault, Data Key Permission Fault, Data Access Rights
Fault, Data Access Bit Fault
4:511