[PATCH v2 0/1] cmpxchg and lock cmpxchg should not touch accumulator

[Wei Li]

Bug: https://gitlab.com/qemu-project/qemu/-/issues/508

This series fix a bug reported on issues 508.
The problem is cmpxchg and lock cmpxchg would touch accumulator when
they should not do that.

Changes from v1
* cmpxchg uses the lock cmpxchg path whenever mod != 3 to reduce code
  duplication.
* lock cmpxchg uses movcond to replace branch.
* Combine the two patches into one patch because cmpxchg uses the lock
  cmpxchg path.

v1 link:
https://lists.gnu.org/archive/html/qemu-devel/2022-03/msg05023.html

Wei Li (1):
  fix cmpxchg and lock cmpxchg instruction

 target/i386/tcg/translate.c | 44 +++++++++++++++++++------------------
 1 file changed, 23 insertions(+), 21 deletions(-)

-- 
2.30.2