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VSUBL

Vector Subtract Long subtracts the elements of one doubleword vector from the corresponding elements of another doubleword vector, and places the results in a quadword vector. Before subtracting, it sign-extends or zero-extends the elements of both operands.

Depending on settings in the CPACR, NSACR, and HCPTR registers, and the Security state and PE mode in which the instruction is executed, an attempt to execute the instruction might be UNDEFINED, or trapped to Hyp mode. For more information see Enabling Advanced SIMD and floating-point support.

It has encodings from the following instruction sets: A32 ( A1 ) and T32 ( T1 ) .

A1

Decode for this encoding

if size == '11' then See("Related encodings"); end; if Vd[0] == '1' || (op == '1' && Vn[0] == '1') then Undefined(); end; let unsigned : boolean = (U == '1'); let is_vsubw : boolean = (op == '1'); let esize : integer{} = 8 << UInt(size); let d : integer = UInt(D::Vd); let n : integer = UInt(N::Vn); let m : integer = UInt(M::Vm); let elements : integer = 64 DIV esize;

T1

Decode for this encoding

if size == '11' then See("Related encodings"); end; if Vd[0] == '1' || (op == '1' && Vn[0] == '1') then Undefined(); end; let unsigned : boolean = (U == '1'); let is_vsubw : boolean = (op == '1'); let esize : integer{} = 8 << UInt(size); let d : integer = UInt(D::Vd); let n : integer = UInt(N::Vn); let m : integer = UInt(M::Vm); let elements : integer = 64 DIV esize;

Assembler Symbols