Constraint_NONE The instruction executes as described, with no change to its behavior and no additional side effects. Constraint_UNKNOWN The value in the destination register is unknown. Constraint_UNDEF The instruction is undefined. Constraint_NOP The instruction executes as NOP. Constraint_UNCOND The instruction executes unconditionally. Constraint_COND The instruction executes conditionally. Constraint_WBSUPPRESS The instruction executes without writeback of the base address. Constraint_ADDITIONAL_DECODE The instruction executes with the additional decode: $pseudocode. Constraint_EXECUTES_AS_IF The instruction executes as if $pseudocode. Constraint_LDUNKNOWN The load instruction executes but the destination register takes an unknown value. Constraint_STUNKNOWN The store instruction executes but the value stored is unknown. Constraint_BASEUNKNOWN The store instruction executes but the value stored for the base register is unknown.