[Qemu-devel] [PATCH 0/5] target/arm: More SVE prep work

[Richard Henderson]

First, we had noted that ARM_CP_64BIT needed to be removed from
the ZCR_EL registers, but the patch set was applied without
actually fixing that.

Second, there's an existing bug by which the FPCR/FPSR registers
are not properly trapped when FP is disabled.  Fix that with a
translation-time check.

Third, my attempt at using .accessfn for ZCR_EL fails to take
into account the two different exception syndromes that must be
raised.  Although they probably aren't as important as FPCR/FPSR,
handle them at translation time too.

Fourth, when writing to an AdvSIMD register, zero the rest of
the SVE register.


r~


Richard Henderson (5):
  target/arm: Remove ARM_CP_64BIT from ZCR_EL registers
  target/arm: Enforce FP access to FPCR/FPSR
  target/arm: Suppress TB end for FPCR/FPSR
  target/arm: Enforce access to ZCR_EL at translation
  target/arm: Handle SVE registers when using clear_vec_high

 target/arm/cpu.h           |  36 ++++-----
 target/arm/internals.h     |   6 ++
 target/arm/helper.c        |  28 ++-----
 target/arm/translate-a64.c | 181 ++++++++++++++++++++-------------------------
 4 files changed, 114 insertions(+), 137 deletions(-)

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2.14.3