From: Albert Cahalan <acahalan@gmail.com>
To: Albert Cahalan <acahalan@gmail.com>,
Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
Andi Kleen <ak@suse.de>
Cc: Albert Cahalan <acahalan@gmail.com>
Subject: [PATCH] i386 regparm=3 RT signal handlers on x86_64
Date: Sun, 29 Oct 2006 22:26:17 -0500 [thread overview]
Message-ID: <20061030032617.9875.86052.sendpatchset@cube> (raw)
The recent change to make x86_64 support i386 binaries compiled
with -mregparm=3 only covered signal handlers without SA_SIGINFO.
(the 3-arg "real-time" ones) This is useful for klibc at least.
Signed-off-by: Albert Cahalan <acahalan@gmail.com>
diff -Naurd old/arch/x86_64/ia32/ia32_signal.c new/arch/x86_64/ia32/ia32_signal.c
--- old/arch/x86_64/ia32/ia32_signal.c 2006-10-29 20:36:01.000000000 -0500
+++ new/arch/x86_64/ia32/ia32_signal.c 2006-10-29 21:58:01.000000000 -0500
@@ -579,6 +579,11 @@
regs->rsp = (unsigned long) frame;
regs->rip = (unsigned long) ka->sa.sa_handler;
+ /* Make -mregparm=3 work */
+ regs->rax = sig;
+ regs->rdx = (unsigned long) &frame->info;
+ regs->rcx = (unsigned long) &frame->uc;
+
asm volatile("movl %0,%%ds" :: "r" (__USER32_DS));
asm volatile("movl %0,%%es" :: "r" (__USER32_DS));
reply other threads:[~2006-10-30 3:23 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=20061030032617.9875.86052.sendpatchset@cube \
--to=acahalan@gmail.com \
--cc=ak@suse.de \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@osdl.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