c.jr

Jump Register

C.JR (jump register) performs an unconditional control transfer to the address in register xs1. C.JR expands to jalr x0, 0(xs1).

Assembly format

c.jr xs1

Decode Variables

Bits<5> xs1 = $encoding[11:7];

Execution

if (implemented?(ExtensionName::C) && (CSR[misa].C == 1'b0)) {
  raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
jump(X[xs1]);

Exceptions

This instruction may result in the following synchronous exceptions:

  • IllegalInstruction

  • InstructionAddressMisaligned

Encoding

svg

Defining extension

Zca

Access

M

Always

Containing profiles

  • Mandatory: None

  • Optional: RVA20S64, RVA20U64, RVA22S64, RVA22U64, RVA23S64, RVA23U64, RVB23S64, RVB23U64, RVI20U32, RVI20U64