From: "Jose E. Marchesi" <jose.marchesi@oracle.com>
To: Yonghong Song <yhs@meta.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>, Yonghong Song <yhs@fb.com>,
bpf@vger.kernel.org, Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Fangrui Song <maskray@google.com>,
kernel-team@fb.com, cupertino.miranda@oracle.com,
david.faust@oracle.com
Subject: Re: [PATCH bpf-next v2 00/15] bpf: Support new insns from cpu v4
Date: Fri, 21 Jul 2023 16:56:03 +0200 [thread overview]
Message-ID: <87351h8gak.fsf@oracle.com> (raw)
In-Reply-To: <aa910249-cc7f-680f-144a-b6f6962b277d@meta.com> (Yonghong Song's message of "Mon, 17 Jul 2023 14:52:32 -0700")
Hi Yonghong.
>>>> . sign extended load
>>>> . sign extended mov
>>>> . bswap
>>>> . signed div/mod
>>>> . ja with 32-bit offset
I am adding the V4 BPF instructions to binutils. Where is the precise
"pseudo-c" syntax used by the new instructions documented?
For ALU sdiv/smod we are using:
rd s/= rs
rd s%= rs
For ALU32 sdiv/smod we are using:
wd s/= ws
wd s%= ws
For ALU movs instruction I just made up:
rd s= (i8) rs
rd s= (i16) rs
rd s= (i32) rs
For ALU32 movs I just made up:
wd s= (i8) ws
wd s= (i16) ws
wd s= (i32) ws
Thanks!
next prev parent reply other threads:[~2023-07-21 14:56 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-13 6:07 [PATCH bpf-next v2 00/15] bpf: Support new insns from cpu v4 Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 01/15] bpf: Support new sign-extension load insns Yonghong Song
2023-07-14 18:13 ` Alexei Starovoitov
2023-07-14 23:22 ` Yonghong Song
2023-07-17 1:39 ` Eduard Zingerman
2023-07-19 0:15 ` Eduard Zingerman
2023-07-19 2:28 ` Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 02/15] bpf: Fix sign-extension ctx member accesses Yonghong Song
2023-07-17 1:40 ` Eduard Zingerman
2023-07-19 0:40 ` Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 03/15] bpf: Support new sign-extension mov insns Yonghong Song
2023-07-17 1:41 ` Eduard Zingerman
2023-07-19 1:17 ` Yonghong Song
2023-07-19 12:53 ` Eduard Zingerman
2023-07-19 15:59 ` Fangrui Song
2023-07-19 16:57 ` Eduard Zingerman
2023-07-13 6:07 ` [PATCH bpf-next v2 04/15] bpf: Support new unconditional bswap instruction Yonghong Song
2023-07-17 1:42 ` Eduard Zingerman
2023-07-19 1:22 ` Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 05/15] bpf: Support new signed div/mod instructions Yonghong Song
2023-07-18 23:00 ` Eduard Zingerman
2023-07-19 2:30 ` Yonghong Song
2023-07-19 2:44 ` Alexei Starovoitov
2023-07-19 6:57 ` Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 06/15] bpf: Fix jit blinding with new sdiv/smov insns Yonghong Song
2023-07-13 6:07 ` [PATCH bpf-next v2 07/15] bpf: Support new 32bit offset jmp instruction Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 08/15] selftests/bpf: Add a cpuv4 test runner for cpu=v4 testing Yonghong Song
2023-07-13 6:18 ` Fangrui Song
2023-07-13 6:25 ` Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 09/15] selftests/bpf: Add unit tests for new sign-extension load insns Yonghong Song
2023-07-18 23:06 ` Eduard Zingerman
2023-07-13 6:08 ` [PATCH bpf-next v2 10/15] selftests/bpf: Add unit tests for new sign-extension mov insns Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 11/15] selftests/bpf: Add unit tests for new bswap insns Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 12/15] selftests/bpf: Add unit tests for new sdiv/smod insns Yonghong Song
2023-07-18 23:10 ` Eduard Zingerman
2023-07-13 6:08 ` [PATCH bpf-next v2 13/15] selftests/bpf: Add unit tests for new gotol insn Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 14/15] selftests/bpf: Test ldsx with more complex cases Yonghong Song
2023-07-13 6:08 ` [PATCH bpf-next v2 15/15] docs/bpf: Add documentation for new instructions Yonghong Song
2023-07-14 18:28 ` Alexei Starovoitov
2023-07-14 23:26 ` Yonghong Song
2023-07-14 23:33 ` Dave Thaler
2023-07-14 23:33 ` [Bpf] " Dave Thaler
2023-07-15 0:23 ` Alexei Starovoitov
2023-07-15 0:23 ` [Bpf] " Alexei Starovoitov
2023-07-14 23:34 ` Dave Thaler
2023-07-14 23:34 ` [Bpf] " Dave Thaler
2023-07-17 1:39 ` [PATCH bpf-next v2 00/15] bpf: Support new insns from cpu v4 Eduard Zingerman
2023-07-17 16:56 ` Alexei Starovoitov
2023-07-17 17:04 ` Eduard Zingerman
2023-07-17 21:52 ` Yonghong Song
2023-07-21 14:56 ` Jose E. Marchesi [this message]
2023-07-24 0:17 ` Jose E. Marchesi
2023-07-24 1:04 ` Jose E. Marchesi
2023-07-24 2:35 ` Yonghong Song
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87351h8gak.fsf@oracle.com \
--to=jose.marchesi@oracle.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=cupertino.miranda@oracle.com \
--cc=daniel@iogearbox.net \
--cc=david.faust@oracle.com \
--cc=eddyz87@gmail.com \
--cc=kernel-team@fb.com \
--cc=maskray@google.com \
--cc=yhs@fb.com \
--cc=yhs@meta.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).