FMOV (vector, immediate)

Floating-point move immediate (vector). This instruction copies an immediate floating-point constant into every element of the SIMD&FP destination 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.

It has encodings from 2 classes: Half-precision and Single-precision and double-precision

Half-precision
(FEAT_FP16)

if !IsFeatureImplemented(FEAT_FP16) then UNDEFINED; integer rd = UInt(Rd); constant integer datasize = 64 << UInt(Q); bits(datasize) imm; bits(8) imm8 = a:b:c:d:e:f:g:h; bits(16) imm16 = imm8<7>:NOT(imm8<6>):Replicate(imm8<6>, 2):imm8<5:0>:Zeros(6); imm = Replicate(imm16, datasize DIV 16);

Single-precision and double-precision

integer rd = UInt(Rd); constant integer datasize = 64 << UInt(Q); bits(datasize) imm; bits(64) imm64; if cmode:op == '11111' then // FMOV Dn,#imm is in main FP instruction set if Q == '0' then UNDEFINED; imm64 = AdvSIMDExpandImm(op, cmode, a:b:c:d:e:f:g:h); imm = Replicate(imm64, datasize DIV 64);