EOR (immediate)

Bitwise exclusive-OR (immediate)

This instruction performs a bitwise exclusive-OR of 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	1	0	1	0	0	1	0	0	N	immr						imms						Rn					Rd
	opc

32-bit encoding

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

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

64-bit encoding

(sf == 1)

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

Decode (all encodings)

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

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>	For the "32-bit" variant: is the bitmask immediate, encoded in "imms:immr".
	For the "64-bit" variant: is the bitmask immediate, encoded in "N:imms:immr".

<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

constant bits(datasize) operand1 = X[n, datasize]; constant bits(datasize) operand2 = imm; constant bits(datasize) result = operand1 EOR operand2; if d == 31 then SP[64] = ZeroExtend(result, 64); else X[d, datasize] = result;

Operational information

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

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