From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: libc-hacker@sources.redhat.com
Subject: [patch] s390: allow 6 system call parameters with syscall().
Date: Fri, 05 May 2006 16:51:00 -0000 [thread overview]
Message-ID: <20060505165204.GB5543@skybase> (raw)
Hi,
the syscall() function currently can not deal with 6 parameters.
To make futex and pselect6 available with syscall() a small patch
is needed.
blue skies,
Martin.
2006-05-05 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/syscall.S: Add support for
six system call parameters.
* sysdeps/unix/sysv/linux/s390/s390-64/syscall.S: Likewise.
diff -urpN libc/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S libc-s390/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S
--- libc/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S 2003-12-06 01:18:52.000000000 +0100
+++ libc-s390/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S 2006-05-05 16:22:45.000000000 +0200
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2001, 2006 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
@@ -48,13 +48,14 @@ ENTRY (syscall)
lr %r4,%r5 /* third parameter */
lr %r5,%r6 /* fourth parameter */
l %r6,192(%r15) /* fifth parameter */
+ l %r7,196(%r15) /* sixth parameter */
- basr %r7,0
-0: cl %r1,4f-0b(%r7) /* svc number < 256? */
+ basr %r8,0
+0: cl %r1,4f-0b(%r8) /* svc number < 256? */
jl 2f
1: svc 0
j 3f
-2: ex %r1,1b-0b(%r7) /* lsb of R1 is subsituted as SVC number */
+2: ex %r1,1b-0b(%r8) /* lsb of R1 is subsituted as SVC number */
3: l %r15,0(%r15) /* load back chain */
cfi_adjust_cfa_offset (-96)
lm %r6,15,24(%r15) /* load registers */
diff -urpN libc/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S libc-s390/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
--- libc/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S 2003-12-06 01:18:52.000000000 +0100
+++ libc-s390/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S 2006-05-05 16:22:45.000000000 +0200
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2006 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of the GNU C Library.
@@ -48,13 +48,14 @@ ENTRY (syscall)
lgr %r4,%r5 /* Third parameter. */
lgr %r5,%r6 /* Fourth parameter. */
lg %r6,320(%r15) /* Fifth parameter. */
+ lg %r7,328(%r15) /* Sixth parameter. */
- basr %r7,0
-0: clg %r1,4f-0b(%r7) /* svc number < 256? */
+ basr %r8,0
+0: clg %r1,4f-0b(%r8) /* svc number < 256? */
jl 2f
1: svc 0
j 3f
-2: ex %r1,1b-0b(%r7) /* lsb of R1 is subsituted as SVC number */
+2: ex %r1,1b-0b(%r8) /* lsb of R1 is subsituted as SVC number */
3: lg %r15,0(%r15) /* load back chain */
cfi_adjust_cfa_offset (-160)
lmg %r6,15,48(%r15) /* Load registers. */
next reply other threads:[~2006-05-05 16:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-05 16:51 Martin Schwidefsky [this message]
2006-05-05 18:26 ` Ulrich Drepper
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=20060505165204.GB5543@skybase \
--to=schwidefsky@de.ibm.com \
--cc=libc-hacker@sources.redhat.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 read-only IMAP folder(s) and NNTP newsgroup(s).