Re: [PATCH 22/23] target/arm: Implement MDCR_EL2.TDCC and MDCR_EL3.TDCC traps

[Richard Henderson]

On 1/27/23 07:55, Peter Maydell wrote:
> FEAT_FGT also implements an extra trap bit in the MDCR_EL2 and
> MDCR_EL3 registers: bit TDCC enables trapping of use of the Debug
> Comms Channel registers OSDTRRX_EL1, OSDTRTX_EL1, MDCCSR_EL0,
> MDCCINT_EL0, DBGDTR_EL0, DBGDTRRX_EL0 and DBGDTRTX_EL0 (and their
> AArch32 equivalents).  This trapping is independent of whether
> fine-grained traps are enabled or not.
>
> Implement these extra traps.  (We don't implement DBGDTR_EL0,
> DBGDTRRX_EL0 and DBGDTRTX_EL0.)
>
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/arm/debug_helper.c | 35 +++++++++++++++++++++++++++++++----
>   1 file changed, 31 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~