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Instruction Descriptions 4–109
4.10.4 Move from/to Floating-Point Control Register
Format:
Operation:
CASE
MF_FPCR: Fa ← FPCR
MT_FPCR: FPCR ← Fav
ENDCASE
Exceptions:
Instruction mnemonics:
Qualifiers:
Description:
The Floating-point Control Register (FPCR) is read from (MF_FPCR) or written to
(MT_FPCR), a floating-point register. The floating-point register to be used is specified by the
Fa, Fb, and Fc fields all pointing to the same floating-point register. If the Fa, Fb, and Fc fields
do not all point to the same floating-point register, then it is UNPREDICTABLE which regis-
ter is used. If the Fa, Fb, and Fc fields do not all point to the same floating-point register, the
resulting values in the Fc register and in FPCR are UNPREDICTABLE.
If the Fc field is F31 in the case of MT_FPCR, the resulting value in FPCR is
UNPREDICTABLE.
The use of these instructions and the FPCR are described in Section 4.7.8.
Mx_FPCR Fa.rq,Fa.rq,Fa.wq
!Floating-point Operate format
None
MF_FPCR Move from Floating-point Control Register
MT_FPCR Move to Floating-point Control Register
None