Update.

2004-03-11  Kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* sysdeps/sh/tcb-offsets.sym: Add PID.
	* sysdeps/unix/sysv/linux/sh/pt-vfork.S: Properly handle PID cache.
	* sysdeps/unix/sysv/linux/sh/vfork.S: New file.

2 files changed, 137 insertions, 1 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S b/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
index 5b13639c77..2d1148daa5 100644
--- a/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
+++ b/nptl/sysdeps/unix/sysv/linux/sh/pt-vfork.S
@@ -1 +1,66 @@
-#include <sysdeps/unix/sysv/linux/sh/vfork.S>
+/* Copyright (C) 2003, 2004 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.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <tcb-offsets.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)
+	/* Save the PID value.  */
+	stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	@(r0,r2), r4
+	neg	r4, r1
+	mov.l	r1, @(r0,r2)
+
+	mov.w	.L1, r3
+	trapa	#0x10
+	mov     r0, r1
+
+	/* Restore the old PID value in the parent.  */
+	tst	r0, r0
+	bt/s	2f
+	 stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	r4, @(r0,r2)
+	mov	r1, r0
+2:
+	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
+.L2:
+	.word	PID - TLS_PRE_TCB_SIZE
+
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/nptl/sysdeps/unix/sysv/linux/sh/vfork.S b/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
new file mode 100644
index 0000000000..5433eacbe9
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
@@ -0,0 +1,71 @@
+/* Copyright (C) 2004 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.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <tcb-offsets.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)
+	/* Save the PID value.  */
+	stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	@(r0,r2), r4
+	neg	r4, r1
+	tst	r1, r1
+	bf	1f
+	mov	#1, r1
+	rotr	r1
+1:
+	mov.l	r1, @(r0,r2)
+
+	mov.w	.L1, r3
+	trapa	#0x10
+	mov     r0, r1
+
+	/* Restore the old PID value in the parent.  */
+	tst	r0, r0
+	bt.s	2f
+	 stc	gbr, r2
+	mov.w	.L2, r0
+	mov.l	r4, @(r0,r2)
+	mov	r1, r0
+2:
+	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
+.L2:
+	.word	PID - TLS_PRE_TCB_SIZE
+	.align	2
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)