On 4/16/19 5:57 AM, Peter Maydell wrote: > Like AArch64, M-profile floating point has no FPEXC enable > bit to gate floating point; so always set the VFPEN TB flag. > > M-profile also has CPACR and NSACR similar to A-profile; > they behave slightly differently: > * the CPACR is banked between Secure and Non-Secure > * if the NSACR forces a trap then this is taken to > the Secure state, not the Non-Secure state > > Honour the CPACR and NSACR settings. The NSACR handling > requires us to borrow the exception.target_el field > (usually meaningless for M profile) to distinguish the > NOCP UsageFault taken to Secure state from the more > usual fault taken to the current security state. > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > --- > target/arm/helper.c | 55 +++++++++++++++++++++++++++++++++++++++--- > target/arm/translate.c | 10 ++++++-- > 2 files changed, 60 insertions(+), 5 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
