FMOV (general)

Floating-point move to or from general-purpose register without conversion

This instruction transfers the contents of a SIMD&FP register to a general-purpose register, or the contents of a general-purpose register to a SIMD&FP register.

Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.

Decode for all variants of this encoding

if !IsFeatureImplemented(FEAT_FP) then EndOfDecode(Decode_UNDEF); if ftype == '10' && opcode<2:1>:rmode != '11 01' then EndOfDecode(Decode_UNDEF); if ftype == '11' && !IsFeatureImplemented(FEAT_FP16) then EndOfDecode(Decode_UNDEF); constant integer d = UInt(Rd); constant integer n = UInt(Rn); constant integer intsize = 32 << UInt(sf); constant integer fltsize = if ftype == '10' then 64 else (8 << UInt(ftype EOR '10')); constant integer part = UInt(rmode<0>); FPConvOp op; case opcode<2:1>:rmode of when '11 00' // FMOV if fltsize != 16 && fltsize != intsize then EndOfDecode(Decode_UNDEF); op = if opcode<0> == '1' then FPConvOp_MOV_ItoF else FPConvOp_MOV_FtoI; when '11 01' // FMOV D[1] if intsize != 64 || ftype != '10' then EndOfDecode(Decode_UNDEF); op = if opcode<0> == '1' then FPConvOp_MOV_ItoF else FPConvOp_MOV_FtoI; otherwise Unreachable();