Floating-point move immediate (scalar). This instruction copies a floating-point immediate constant into 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.
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | ftype | 1 | imm8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Rd | ||||||||||||
| M | S | imm5 | |||||||||||||||||||||||||||||
if ftype == '10' || (ftype == '11' && !IsFeatureImplemented(FEAT_FP16)) then UNDEFINED; integer d = UInt(Rd); constant integer datasize = 8 << UInt(ftype EOR '10'); bits(datasize) imm = VFPExpandImm(imm8, datasize);
| <Hd> |
Is the 16-bit name of the SIMD&FP destination register, encoded in the "Rd" field. |
| <imm> |
Is a signed floating-point constant with 3-bit exponent and normalized 4 bits of precision, encoded in the "imm8" field. For details of the range of constants available and the encoding of <imm>, see Modified immediate constants in A64 floating-point instructions. |
| <Sd> |
Is the 32-bit name of the SIMD&FP destination register, encoded in the "Rd" field. |
| <Dd> |
Is the 64-bit name of the SIMD&FP destination register, encoded in the "Rd" field. |
Internal version only: aarchmrs v2024-03_relA, pseudocode v2024-03_rel, sve v2024-03_rel ; Build timestamp: 2024-03-26T09:45
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