LDR (literal, SIMD&FP)
Load SIMD&FP Register (PC-relative literal). This instruction loads a SIMD&FP register from memory. The address that is used for the load is calculated from the PC value and an immediate offset.
integer t = UInt(Rt); integer size; bits(64) offset; case opc of when '00' size = 4; when '01' size = 8; when '10' size = 16; when '11' UNDEFINED; offset = SignExtend(imm19:'00', 64);
Is the 64-bit name of the SIMD&FP register to be loaded, encoded in the "Rt" field.
Is the 128-bit name of the SIMD&FP register to be loaded, encoded in the "Rt" field.
Is the 32-bit name of the SIMD&FP register to be loaded, encoded in the "Rt" field.
Is the program label from which the data is to be loaded. Its offset from the address of this instruction, in the range +/-1MB, is encoded as "imm19" times 4.
bits(64) address = PC + offset; bits(size*8) data; if HaveMTEExt() then SetTagCheckedInstruction(FALSE); CheckFPAdvSIMDEnabled64(); data = Mem[address, size, AccType_VEC]; V[t] = data;
If PSTATE.DIT is 1, the timing of this instruction is insensitive to the value of the data being loaded or stored.