Function writeback_jump

crates/virtual-machine/tests/vm_writeback.rs:271–281

()

        operand: 42,
        old_val: 0,
        next_pc: 0x8000_0004,
    };

    let next_pc = writeback(mem_result, &mut regs, &mut csrs).expect("writeback should succeed");

    // Old value (0) returned
    assert_eq!(regs.read_x(5), 0);
    // MHARTID is still 0 (writes ignored)
    assert_eq!(
        csrs.read(addr::MHARTID).expect("writeback should succeed"),
        0
    );
    assert_eq!(next_pc, 0x8000_0004);
}