Re: [PATCH 8/9] target/arm: Enable FPSCR.QC bit for MVE
On Mon, 24 May 2021 at 17:59, Richard Henderson wrote: > > On 5/20/21 8:28 AM, Peter Maydell wrote: > > MVE has an FPSCR.QC bit similar to the A-profile Neon one; > > when MVE is implemented make the bit writeable. > > > > Signed-off-by: Peter Maydell > > --- > > target/arm/vfp_helper.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > Reviewed-by: Richard Henderson There's a followon bit to this patch which I didn't notice at first, which is that the handling of ARM_VFP_FPSCR_NZCVQC in the "fp_sysreg" code also needs to be updated to read/write the QC bit (currently it has TODO comments about this.) Given that this patch is currently a one-liner I think I'll just respin it as a single patch with all the accesses to QC fixed. thanks -- PMM
Re: [PATCH 8/9] target/arm: Enable FPSCR.QC bit for MVE
On 5/20/21 8:28 AM, Peter Maydell wrote: MVE has an FPSCR.QC bit similar to the A-profile Neon one; when MVE is implemented make the bit writeable. Signed-off-by: Peter Maydell --- target/arm/vfp_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Reviewed-by: Richard Henderson r~
[PATCH 8/9] target/arm: Enable FPSCR.QC bit for MVE
MVE has an FPSCR.QC bit similar to the A-profile Neon one; when MVE is implemented make the bit writeable. Signed-off-by: Peter Maydell --- target/arm/vfp_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/arm/vfp_helper.c b/target/arm/vfp_helper.c index e0886ab5a56..11e1e087e81 100644 --- a/target/arm/vfp_helper.c +++ b/target/arm/vfp_helper.c @@ -220,7 +220,8 @@ void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val) FPCR_LTPSIZE_LENGTH); } -if (arm_feature(env, ARM_FEATURE_NEON)) { +if (arm_feature(env, ARM_FEATURE_NEON) || +cpu_isar_feature(aa32_mve, cpu)) { /* * The bit we set within fpscr_q is arbitrary; the register as a * whole being zero/non-zero is what counts. -- 2.20.1