On 8/17/26 05:38, Peter Maydell wrote:
Currently we directly call dc_isar_feature(aa32_simd_r32, s) for VFP
insns that use D16-D31 to see if they should UNDEF. For some v7A
CPUs (Cortex-A7, Cortex-A9) there is also a CPACR.D32DIS trap bit
that will make VFP (and only VFP, not Neon) insns using D16-D31
UNDEF.
Abstract out the register check for VFP insns into a new function
which will provide us a place where we can make this check.
Since D32DIS takes precedence over traps to EL2 and EL3 and simply
makes the insns UNDEF, we are OK to check it at the same point when
we do the CPU feature check, rather than having to wait until
vfp_access_check().
Signed-off-by: Peter Maydell<[email protected]>
---
target/arm/tcg/translate-vfp.c | 70 ++++++++++++++++++++--------------
1 file changed, 42 insertions(+), 28 deletions(-)
Reviewed-by: Richard Henderson <[email protected]>
r~
