VABA

Vector Absolute Difference and Accumulate subtracts the elements of one vector from the corresponding elements of another vector, and accumulates the absolute values of the results into the elements of the destination vector.

Operand and result elements are all integers of the same length.

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

if size == '11' then UNDEFINED; if Q == '1' && (Vd<0> == '1' || Vn<0> == '1' || Vm<0> == '1') then UNDEFINED; constant unsigned = (U == '1'); constant long_destination = FALSE; constant integer esize = 8 << UInt(size); constant d = UInt(D:Vd); constant n = UInt(N:Vn); constant m = UInt(M:Vm); constant elements = 64 DIV esize; constant regs = if Q == '0' then 1 else 2;

T1

if size == '11' then UNDEFINED; if Q == '1' && (Vd<0> == '1' || Vn<0> == '1' || Vm<0> == '1') then UNDEFINED; constant unsigned = (U == '1'); constant long_destination = FALSE; constant integer esize = 8 << UInt(size); constant d = UInt(D:Vd); constant n = UInt(N:Vn); constant m = UInt(M:Vm); constant elements = 64 DIV esize; constant regs = if Q == '0' then 1 else 2;