Re: [PATCH 0/6] Misc patches to pass the testsuite and remove warnings

[Kim Kuparinen]

> although I'm pretty sure there's a bug in qemu-ppc64le.

Seems like someone else found it and submitted a patch yesterday:
https://lists.nongnu.org/archive/html/qemu-ppc/2021-11/msg00309.html

la 20. marrask. 2021 klo 13.13 Kim Kuparinen
(kimi.h.kuparinen@gmail.com) kirjoitti:
>
> Resend of patches I previously sent without signatures, along with two misc
> additions. Sorry about the extra spam.
>
> I've tested these patches with Debian 11, kernel Linux 5.10.70-1 on qemu on
> arches
>
> ppc64le, cpu POWER9
> mips64el, cpu 5KEc
> arm, cpu cortex-a15
> aarch64, cpu cortex-a57
> riscv64
>
> and on real hardware with amd64 (AMD Ryzen 5 5600x) and arm on my Raspberry Pi
> 4B (cortex-a72).
>
> make check seems to pass on all systems tested, except qemu-system-ppc64le and
> my Pi, although I'm pretty sure there's a bug in qemu-ppc64le. It has to do 
> with the
> fcti* instructions, which according to the specs I found should return either 
> max/min
> value of the target register when dealing with values larger/smaller than 
> that, but qemu
> only returns a `nanvalue`. When I ran qemu with a patch I wrote, ppc64le also
> passes all tests.
>
> My Pi passes when generating thumb code, but fails when generating arm code. 
> No
> clue what's going on, I get a segfault on the first generated instruction of 
> every
> test. I'll probably write a more specific bug report in the near future, but 
> I'd
> like to do some more testing on my own before then.
>
> Kim Kuparinen (6):
>   riscv: Fix movi/relatives loading incorrect value
>   arm: Force RES0 bits in TST/A1 to be 0
>   mips: Use DEXT when in 64-bit mode instead of EXT
>   ppc: Add endianness check to _truncr_d_i
>   misc: Add bfd_arch to arm/aarch64/mips
>   Include math.h in check/lightning.c
>
>  check/lightning.c   |  1 +
>  lib/jit_arm-cpu.c   |  2 +-
>  lib/jit_disasm.c    | 13 +++++++++++++
>  lib/jit_mips-cpu.c  |  6 +++++-
>  lib/jit_ppc-fpu.c   |  4 ++++
>  lib/jit_riscv-cpu.c | 12 ++++++++++++
>  6 files changed, 36 insertions(+), 2 deletions(-)
>
> --
> 2.33.0
>