[Qemu-devel] [PATCH 0/4] target/s390x ilen via unwinding

From: Richard Henderson <rth@twiddle.net>
To: qemu-devel@nongnu.org
Cc: david@redhat.com
Subject: [Qemu-devel] [PATCH 0/4] target/s390x ilen via unwinding
Date: Mon, 24 Jul 2017 19:36:07 -0700	[thread overview]
Message-ID: <20170725023611.9169-1-rth@twiddle.net> (raw)

David Hildenbrand recently posted a series of patches correcting
various mistakes in the computation of ILEN for various instructions
in the respective helpers.

I think a better approach is to include ilen in the set of unwind
data for each insn.  In this way we can fix these sorts of errors
automatically.  At the same time begin to wean ourselves away from
ILEN_AUTO, which requires re-reading from the instruction stream.

Almost certainly 2.11 material.  Thoughts?

r~

Richard Henderson (4):
  target/s390x: Add ilen to unwind data
  target/s390x: Use ILEN_UNWIND in trivial cases
  target/s390x: Use unwind info in STSI
  target/s390x: Use ilen from unwind in tlb_fill

 target/s390x/cpu.h         |  9 ++++++---
 target/s390x/helper.c      | 14 ++++++++------
 target/s390x/mem_helper.c  | 39 +++++++++++++++++++++++++--------------
 target/s390x/misc_helper.c | 10 +++++++---
 target/s390x/translate.c   | 10 ++++++++--
 5 files changed, 54 insertions(+), 28 deletions(-)

-- 
2.13.3