<= R0 = current context pointer
This call deactivates the current floating point context, ensuring that
everything about the context is held in memory. It returns the address of the
current floating point context, or zero if the floating point system is in
the completely disabled state described under FPEmulator_ChangeContext.
Note that these calls should be made in pairs, with an FPEmulator_ActivateContext call following each FPEmulator_DeactivateContext
call, Also, you should not allow any floating point instructions to be
executed between an FPEmulator_DeactivateContext call and the following FPEmulator_ActivateContext call, since executing a floating point instruction
will re-activate the context and mean that the memory context may no longer
be up-to-date.
Exception: it is legitimate to leave out the call to FPEmulator_DeactivateContext in the above sequence, but only if the old
context is never going to be used again: it is likely to be in an
inconsistent state if the FPEmulator_DeactivateContext call is omitted. Contexts are only available from FPEmulator 4.12 and later. [sh-index] Back to list of manuals
