On 30/06/2020 08.56, LIU Zhiwei wrote:
On 2020/6/29 6:51, Alistair Francis wrote:
On Sun, Jun 28, 2020 at 7:30 AM Peter Maydell
<peter.mayd...@linaro.org> wrote:
On Fri, 26 Jun 2020 at 22:53, Alistair Francis
<alistair.fran...@wdc.com> wrote:
The following changes since commit
553cf5d7c47bee05a3dec9461c1f8430316d516b:
Merge remote-tracking branch
'remotes/pmaydell/tags/pull-target-arm-20200626' into staging
(2020-06-26 18:22:36 +0100)
are available in the Git repository at:
g...@github.com:alistair23/qemu.git
tags/pull-riscv-to-apply-20200626-1
for you to fetch changes up to
b39d59434ea10649fdb9e0a339c30c76e38c5e17:
target/riscv: configure and turn on vector extension from command
line (2020-06-26 14:22:15 -0700)
----------------------------------------------------------------
This PR contains two patches to improve PLIC support in QEMU.
The rest of the PR is adding support for the v0.7.1 RISC-V vector
extensions. This is experimental support as the vector extensions are
still in a draft state.
Hi; I'm afraid this fails to build on PPC64 and s390x (ie
our big-endian hosts):
Hi Peter,
Do you mean you built the patch set on PPC64 or s390x and got errors in
the list? Or just a worry?
>
I have built the patch set on Ubuntu 18.04 X86-64. I don't know which
compile option
will fails the compilation. If you compiled on Ubuntu x86-64, could you
show me the
compile option?
The related code in your patch "target/riscv: add vector stride load and
store instructions" is in a "#ifdef HOST_WORDS_BIGENDIAN" section, so of
course this bug does not trigger on a x86 host. You could temporarily
turn the "#ifdef HOST_WORDS_BIGENDIAN" into a "#if 1" to see whether you
can then also reproduce the error on x86.
As a note: I try to find a PPC64 for test, but I'm afraid it will be too
later.
Is there an available PPC64 machine in the community?
Maybe the easiest way to test your code on a big endian machine, too, is
to get a github account, clone the QEMU repository there, and enable
Travis for that repo. Then your code gets built on some non-x86
architectures (including a big-endian s390x) as soon as you push it to
the repo (see .travis.yml for details).
/home/ubuntu/qemu/target/riscv/vector_helper.c: In function
‘vext_clear’:
/home/ubuntu/qemu/target/riscv/vector_helper.c: In function
‘vext_clear’:
/home/ubuntu/qemu/target/riscv/vector_helper.c:154:21: error: invalid
operands to binary & (have ‘void *’ and ‘long long unsigned int’)
memset(tail & ~(7ULL), 0, part1);
You obviously must not use "&" with a pointer. I guess you have to cast
to "uintptr_t" and back, or think of some other smart way to fix this.
Thomas
