c.jr

Jump Register

This instruction is defined by:

Encoding

Synopsis

C.JR (jump register) performs an unconditional control transfer to the address in register rs1. C.JR expands to jalr x0, 0(rs1).

Access

Always

Decode Variables

Bits<5> rs1 = $encoding[11:7];

Execution

Pruned, XLEN == 64
Original

if ((%%LINK%csr_field;misa.C;CSR[misa].C%% == 1'b0)) {
  %%LINK%func;raise;raise%%(ExceptionCode::IllegalInstruction, %%LINK%func;mode;mode%%(), $encoding);
}
%%LINK%func;jump;jump%%(X[rs1]);

if (%%LINK%func;implemented?;implemented?%%(ExtensionName::C) && (%%LINK%csr_field;misa.C;CSR[misa].C%% == 1'b0)) {
  %%LINK%func;raise;raise%%(ExceptionCode::IllegalInstruction, %%LINK%func;mode;mode%%(), $encoding);
}
%%LINK%func;jump;jump%%(X[rs1]);

Exceptions

This instruction may result in the following synchronous exceptions:

IllegalInstruction
InstructionAddressMisaligned