public inbox for libc-alpha@sourceware.org
 help / color / mirror / Atom feed
From: Joe Simmons-Talbott <josimmon@redhat.com>
To: libc-alpha@sourceware.org
Cc: Joe Simmons-Talbott <josimmon@redhat.com>
Subject: [PATCH v2 0/2] x86_64: aarch64: Set call number just before syscall
Date: Wed, 12 Apr 2023 17:11:02 -0400	[thread overview]
Message-ID: <20230412211104.2609738-1-josimmon@redhat.com> (raw)
In-Reply-To: <20230411133004.2268170-1-josimmon@redhat.com>

To make binary call tree analysis easier place the syscall number into
the register just before the syscall is made.  Only do this if the
syscall number is a constant integer.

Tested on x86_64 and aarch64.

Changes to v1:
  * aarch64: Combine two inline asms into one.  Avoid loading name twice.

Joe Simmons-Talbott (2):
  x86_64: Set the syscall register right before doing the syscall.
  aarch64: Set the syscall register right before doing the syscall.

 sysdeps/unix/sysv/linux/aarch64/sysdep.h | 20 +++++++++++---
 sysdeps/unix/sysv/linux/x86_64/sysdep.h  | 33 ++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 3 deletions(-)

-- 
2.39.2


  parent reply	other threads:[~2023-04-12 21:11 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-11 13:30 [PATCH " Joe Simmons-Talbott
2023-04-11 13:30 ` [PATCH 1/2] x86_64: Set the syscall register right before doing the syscall Joe Simmons-Talbott
2023-04-17 22:35   ` Noah Goldstein
2023-04-17 22:36     ` Noah Goldstein
2023-04-11 13:30 ` [PATCH 2/2] aarch64: " Joe Simmons-Talbott
2023-04-11 13:50   ` Florian Weimer
2023-04-11 14:15     ` Adhemerval Zanella Netto
2023-04-11 15:43       ` Szabolcs Nagy
2023-04-11 16:03       ` Florian Weimer
2023-04-11 16:39         ` Adhemerval Zanella Netto
2023-04-12 15:27           ` Joe Simmons-Talbott
2023-04-12 21:11 ` Joe Simmons-Talbott [this message]
2023-04-12 21:11   ` [PATCH v2 1/2] x86_64: " Joe Simmons-Talbott
2023-04-12 21:11   ` [PATCH v2 2/2] aarch64: " Joe Simmons-Talbott
2023-04-17 15:34 ` [PATCH v3 0/2] x86_64: aarch64: Set call number just before syscall Joe Simmons-Talbott
2023-04-17 15:34   ` [PATCH v3 1/2] x86_64: Set the syscall register right before doing the syscall Joe Simmons-Talbott
2023-04-17 15:54     ` H.J. Lu
2023-04-17 16:00       ` Joe Simmons-Talbott
2023-04-17 18:38         ` H.J. Lu
2023-04-17 15:34   ` [PATCH v3 2/2] aarch64: " Joe Simmons-Talbott
2023-04-17 21:20 ` [PATCH v4 0/2] x86_64: aarch64: Set call number just before syscall Joe Simmons-Talbott
2023-04-17 21:20   ` [PATCH v4 1/2] x86_64: Set the syscall register right before doing the syscall Joe Simmons-Talbott
2023-04-17 21:20   ` [PATCH v4 2/2] aarch64: " Joe Simmons-Talbott
2023-04-18 12:57     ` Szabolcs Nagy
2023-04-18 19:33       ` Joe Simmons-Talbott
2023-04-19 13:58 ` [PATCH v5 0/3] x86_64: aarch64: Set call number just before syscall Joe Simmons-Talbott
2023-04-19 13:58   ` [PATCH v5 1/3] x86_64: Set the syscall register right before doing the syscall Joe Simmons-Talbott
2023-04-19 15:35     ` H.J. Lu
2023-04-19 15:48       ` Joe Simmons-Talbott
2023-04-19 13:58   ` [PATCH v5 2/3] aarch64: " Joe Simmons-Talbott
2023-04-19 14:56     ` Szabolcs Nagy
2023-04-19 15:21       ` Joe Simmons-Talbott
2023-04-19 13:58   ` [PATCH v5 3/3] nptl: Use direct syscall numbers in setxid Joe Simmons-Talbott

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=20230412211104.2609738-1-josimmon@redhat.com \
    --to=josimmon@redhat.com \
    --cc=libc-alpha@sourceware.org \
    /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 read-only IMAP folder(s) and NNTP newsgroup(s).