C.JALR

Compressed Jump and Link Register

C.JALR rs1

Jumps to register address and links (saves PC+2 to ra).

Encoding

Binary Layout

?

31:16

1001

15:12

c_rs1_n0

11:7

0000010

6:0

 

Format CR

Opcode 0x00009002

Extension C

Operands

• rs1
  Address

Example

C.JALR x10

// Call function pointer in x10.

Related

More in C

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

Jumps to address in rs1 and saves PC+2 in x1.

Operation

t = PC + 2; PC = R[rs1]; R[1] = t;