Paolo Bonzini d1bb978ba1 target/i386: fix cmpxchg with 32-bit register destination
Unlike the memory case, where "the destination operand receives a write
cycle without regard to the result of the comparison", rm must not be
touched altogether if the write fails, including not zero-extending
it on 64-bit processors.  This is not how the movcond currently works,
because it is always followed by a gen_op_mov_reg_v to rm.

To fix it, introduce a new function that is similar to gen_op_mov_reg_v
but writes to a TCG temporary.

Considering that gen_extu(ot, oldv) is not needed in the memory case
either, the two cases for register and memory destinations are different
enough that one might as well fuse the two "if (mod == 3)" into one.
So do that too.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/508
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[rth: Add a test case ]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-11-15 09:34:42 +10:00
..
2022-10-06 11:53:40 +01:00
2022-06-02 09:35:03 +02:00
2021-05-18 09:36:21 +01:00
2021-05-12 18:20:25 +02:00

This directory contains various interesting guest programs for
regression testing. Tests are either multi-arch, meaning they can be
built for all guest architectures that support linux-user executable,
or they are architecture specific.

CRIS
====
The testsuite for CRIS is in tests/tcg/cris.  You can run it
with "make test-cris".