SVC

Supervisor call

This instruction causes an exception to be taken to EL1.

On executing an SVC instruction, the PE records the exception as a Supervisor Call exception in ESR_ELx, using the EC syndrome value 0x15, and the value of the immediate argument.

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
1	1	0	1	0	1	0	0	0	0	0	imm16																0	0	0	0	1
								opc																			op2			LL

Encoding

SVC #<imm>

Decode for this encoding

constant bits(16) imm = imm16;

Assembler Symbols

<imm>

Is a 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field.

Operation

AArch64.CheckForSVCTrap(imm); AArch64.CallSupervisor(imm);