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.

Encoding: System

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																	0	0	0	0	1
								opc			imm16																op2			LL

SVC #<imm>

Decoding algorithm

constant bits(16) imm = imm16;

Operation

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

Explanations

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