AND (immediate)

Bitwise AND (immediate)

This instruction performs a bitwise AND between a register value and an immediate value, and writes the result to the destination register.

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
sf	0	0	1	0	0	1	0	0	N	immr						imms						Rn					Rd
	opc

32-bit encoding

(sf == 0 && N == 0)

AND <Wd|WSP>, <Wn>, #<imm>

64-bit encoding

(sf == 1)

AND <Xd|SP>, <Xn>, #<imm>

Decode (all encodings)

if sf == '0' && N != '0' then EndOfDecode(Decode_UNDEF); end; let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); let datasize : integer{} = 32 << UInt(sf); var imm : bits(datasize); (imm, -) = DecodeBitMasks{datasize}(N, imms, immr, TRUE);

Assembler Symbols

<Wd|WSP>

Is the 32-bit name of the destination general-purpose register or stack pointer, encoded in the "Rd" field.

<Wn>	Is the 32-bit name of the general-purpose source register, encoded in the "Rn" field.

<imm>

Is the bitmask immediate. For encoding information, see Logical (immediate).

<Xd|SP>

Is the 64-bit name of the destination general-purpose register or stack pointer, encoded in the "Rd" field.

<Xn>	Is the 64-bit name of the general-purpose source register, encoded in the "Rn" field.

Operation

let operand1 : bits(datasize) = X{}(n); let operand2 : bits(datasize) = imm; let result : bits(datasize) = operand1 AND operand2; if d == 31 then SP{64}() = ZeroExtend{64}(result); else X{datasize}(d) = result; end;

Operational information

This instruction is a data-independent-time instruction as described in About PSTATE.DIT.

This site is provided as a community resource and is NOT affiliated with nor endorsed by Arm Limited.