On 11/19/20 3:56 PM, Peter Maydell wrote: > In v8.1M a new exception return check is added which may cause a NOCP > UsageFault (see rule R_XLTP): before we clear s0..s15 and the FPSCR > we must check whether access to CP10 from the Security state of the > returning exception is disabled; if it is then we must take a fault. > > (Note that for our implementation CPPWR is always RAZ/WI and so can > never cause CP10 accesses to fail.) > > The other v8.1M change to this register-clearing code is that if MVE > is implemented VPR must also be cleared, so add a TODO comment to > that effect. > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > --- > target/arm/m_helper.c | 22 +++++++++++++++++++++- > 1 file changed, 21 insertions(+), 1 deletion(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
