[PATCH 1/1] cmd: add rdcycle test to RISC-V exception command

[Leo Liang]

On Sun, Aug 11, 2024 at 04:41:23PM +0200, Heinrich Schuchardt wrote:
> [EXTERNAL MAIL]
> 
> Some versions of KVM don't allow access to the cycle CSR.
> 
> Provide a command 'exception rdcycle' for testing.
> 
> If the cycle CSR is accessible, we get an output like:
> 
>     => exception rdcycle
>     cycle = 0x41f7563de
> 
> If the cycle CSR is not accessible, we get an output like:
> 
>     => exception rdcycle
>     Unhandled exception: Illegal instruction
> 
> Put subcommands into alphabetical order in long help.
> 
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
> ---
>  cmd/riscv/exception.c | 15 +++++++++++++--
>  1 file changed, 13 insertions(+), 2 deletions(-)

Reviewed-by: Leo Yu-Chi Liang <ycliang at andestech.com>