* [PATCH] vfork patch for SH (Take 2)
@ 2003-01-13 4:59 kaz Kojima
2003-01-13 4:59 ` Ulrich Drepper
0 siblings, 1 reply; 2+ messages in thread
From: kaz Kojima @ 2003-01-13 4:59 UTC (permalink / raw)
To: libc-hacker
Hi,
Here is the revised patch for vfork fix of SH and adding
correct syscall error handling for non-PIC case.
Regards,
kaz
--
2003-01-11 Kaz Kojima <kkojima@rr.iij4u.or.jp>
[ChangeLog]
* sysdeps/unix/sysv/linux/sh/sysdep.h (SYSCALL_ERROR_HANDLER):
Add non-PIC case.
[linuxthreads/ChangeLog]
* sysdeps/unix/sysv/linux/sh/vfork.S: New file.
diff -urN ORIG/libc/sysdeps/unix/sysv/linux/sh/sysdep.h LOCAL/libc/sysdeps/unix/sysv/linux/sh/sysdep.h
--- ORIG/libc/sysdeps/unix/sysv/linux/sh/sysdep.h Wed Jan 8 08:37:36 2003
+++ LOCAL/libc/sysdeps/unix/sysv/linux/sh/sysdep.h Sat Jan 11 10:07:19 2003
@@ -66,7 +66,12 @@
END (name)
#ifndef PIC
-# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
+# define SYSCALL_ERROR_HANDLER \
+ mov.l 0f,r1; \
+ jmp @r1; \
+ mov r0,r4; \
+ .align 2; \
+ 0: .long __syscall_error
#else
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
diff -urN ORIG/libc/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S LOCAL/libc/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S
--- ORIG/libc/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S Thu Jan 1 09:00:00 1970
+++ LOCAL/libc/linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S Sat Jan 11 10:43:53 2003
@@ -0,0 +1,57 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep-cancel.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+/* Clone the calling process, but without copying the whole address space.
+ The calling process is suspended until the new process exits or is
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process. */
+
+ENTRY (__vfork)
+ SINGLE_THREAD_P
+ bf .Lhidden_fork
+
+ mov.w .L1, r3
+ trapa #0x10
+ mov r0, r1
+ mov #-12, r2
+ shad r2, r1
+ not r1, r1 // r1=0 means r0 = -1 to -4095
+ tst r1, r1 // i.e. error in linux
+ bf .Lpseudo_end
+ SYSCALL_ERROR_HANDLER
+.Lpseudo_end:
+ rts
+ nop
+.L1: .word __NR_vfork
+
+.Lhidden_fork:
+ mov.l .L2, r1
+ braf r1
+ nop
+1:
+ .align 2
+.L2: .long HIDDEN_JUMPTARGET(__fork)-1b
+
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] vfork patch for SH (Take 2)
2003-01-13 4:59 [PATCH] vfork patch for SH (Take 2) kaz Kojima
@ 2003-01-13 4:59 ` Ulrich Drepper
0 siblings, 0 replies; 2+ messages in thread
From: Ulrich Drepper @ 2003-01-13 4:59 UTC (permalink / raw)
To: kaz Kojima; +Cc: libc-hacker
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
kaz Kojima wrote:
> Here is the revised patch for vfork fix of SH and adding
> correct syscall error handling for non-PIC case.
Thanks, I've applied it.
- --
- --------------. ,-. 444 Castro Street
Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA
Red Hat `--' drepper at redhat.com `---------------------------
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