Update.

2003-01-09  Jakub Jelinek  <jakub@redhat.com>

	* posix/test-vfork.c (noop): Add __attribute_noinline__.
	* sysdeps/generic/sysdep.h (JUMPTARGET): Define if not defined.
	* sysdeps/i386/sysdep.h (JUMPTARGET): Undefine JUMPTARGET before
	defining it.
	* sysdeps/powerpc/powerpc32/sysdep.h (JUMPTARGET): Likewise.
	* sysdeps/powerpc/powerpc64/sysdep.h (JUMPTARGET): Likewise.
	* sysdeps/s390/s390-32/sysdep.h (JUMPTARGET): Likewise.
	* sysdeps/s390/s390-64/sysdep.h (JUMPTARGET): Likewise.
	* sysdeps/x86_64/sysdep.h (JUMPTARGET): Likewise.

7 files changed, 297 insertions, 2 deletions

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S
new file mode 100644
index 0000000000..c057bd2bfa
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/alpha/vfork.S
@@ -0,0 +1,38 @@
+/* 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>
+
+	.globl __vfork
+        .align 4
+        .ent __vfork,0
+__LABEL(__vfork)
+	ldgp	gp, 0(pv)
+	.prologue 1
+	PSEUDO_PROF
+	SINGLE_THREAD_P(t0)
+	bne	t0, HIDDEN_JUMPTARGET (__fork) !samegp
+	lda	v0, SYS_ify(vfork)
+	call_pal PAL_callsys
+	bne	a3, __syscall_error !samegp
+	ret
+PSEUDO_END(__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S
new file mode 100644
index 0000000000..298aedcf43
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/i386/vfork.S
@@ -0,0 +1,81 @@
+/* Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@gnu.org>.
+
+   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>
+#include <kernel-features.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)
+
+#ifdef __NR_vfork
+
+	SINGLE_THREAD_P
+	jne	HIDDEN_JUMPTARGET (__fork)
+
+	/* Pop the return PC value into ECX.  */
+	popl	%ecx
+
+	/* Stuff the syscall number in EAX and enter into the kernel.  */
+	movl	$SYS_ify (vfork), %eax
+	int	$0x80
+
+	/* Jump to the return PC.  Don't jump directly since this
+	   disturbs the branch target cache.  Instead push the return
+	   address back on the stack.  */
+	pushl	%ecx
+
+	cmpl	$-4095, %eax
+	/* Branch forward if it failed.  */
+# ifdef __ASSUME_VFORK_SYSCALL
+	jae	SYSCALL_ERROR_LABEL
+.Lpseudo_end:
+# else
+	jae	.Lerror
+# endif
+
+	ret
+
+# ifndef __ASSUME_VFORK_SYSCALL
+.Lerror:
+	/* Check if vfork syscall is known at all.  */
+	cmpl	$-ENOSYS, %eax
+	jne	SYSCALL_ERROR_LABEL
+# endif
+#endif
+
+#ifndef __ASSUME_VFORK_SYSCALL
+	/* If we don't have vfork, fork is close enough.  */
+
+	movl	$SYS_ify (fork), %eax
+	int	$0x80
+	cmpl	$-4095, %eax
+	jae	SYSCALL_ERROR_LABEL
+.Lpseudo_end:
+	ret
+#endif
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
index ec787da31c..ec9451775d 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
 
@@ -105,7 +105,7 @@ __syscall_error_##args:							      \
 				   p_header.data.multiple_threads) == 0, 1)
 # else
 #  define SINGLE_THREAD_P \
-  adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14 ;;
+  adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
 # endif
 
 #elif !defined __ASSEMBLER__
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S
new file mode 100644
index 0000000000..78c26228f7
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/ia64/vfork.S
@@ -0,0 +1,49 @@
+/* Copyright (C) 2000, 2002, 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 _SIGNAL_H
+#include <bits/signum.h>
+
+#define JUMPTARGET(name) name
+
+/* The following are defined in linux/sched.h, which unfortunately	*/
+/* is not safe for inclusion in an assembly file.			*/
+#define CLONE_VM        0x00000100      /* set if VM shared between processes */
+#define CLONE_VFORK     0x00004000      /* set if the parent wants the child to wake it up on mm_release */
+
+/* pid_t vfork(void); */
+/* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0)	*/
+
+ENTRY(__vfork)
+	SINGLE_THREAD_P
+(p6)	br.cond.spnt.few HIDDEN_JUMPTARGET (__fork);;
+	alloc r2=ar.pfs,0,0,2,0
+	mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD
+	mov out1=0		/* Standard sp value.			*/
+	;;
+	DO_CALL (SYS_ify (clone))
+	cmp.eq p6,p0=-1,r10
+	;;
+(p6)	br.cond.spnt.few __syscall_error
+	ret
+PSEUDO_END(__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
new file mode 100644
index 0000000000..adf7b220be
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
@@ -0,0 +1,37 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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>
+
+	.text
+ENTRY(__vfork)
+	ld	[%g6 + MULTIPLE_THREADS_OFFSET], %o0
+	cmp	%o0, 0
+	bne	HIDDEN_JUMPTARGET(__fork)
+	 mov	__NR_vfork, %g1
+	ta 0x10;
+	bcs	__syscall_error_handler
+	 nop
+	sub	%o1, 1, %o1
+	retl
+	 and	%o0, %o1, %o0
+	SYSCALL_ERROR_HANDLER
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+weak_alias (__vfork, vfork)
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
new file mode 100644
index 0000000000..e4ea9180cf
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
@@ -0,0 +1,36 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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>
+
+	.text
+ENTRY(__vfork)
+	ld	[%g6 + MULTIPLE_THREADS_OFFSET], %o0
+	bne	HIDDEN_JUMPTARGET (__fork)
+	 mov	__NR_vfork, %g1
+	ta	0x6d
+	bcs,pn	%xcc, __syscall_error_handler
+	 nop
+	sub	%o1, 1, %o1
+	retl
+	 and	%o0, %o1, %o0
+	SYSCALL_ERROR_HANDLER
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+weak_alias (__vfork, vfork)
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S
new file mode 100644
index 0000000000..3e867a6211
--- /dev/null
+++ b/linuxthreads/sysdeps/unix/sysv/linux/x86_64/vfork.S
@@ -0,0 +1,54 @@
+/* Copyright (C) 2001, 2002, 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
+	jne	HIDDEN_JUMPTARGET (__fork)
+
+	/* Pop the return PC value into RDI.  We need a register that
+	   is preserved by the syscall and that we're allowed to destroy. */
+	popq	%rdi
+
+	/* Stuff the syscall number in RAX and enter into the kernel.  */
+	movl	$SYS_ify (vfork), %eax
+	syscall
+
+	/* Push back the return PC.  */
+	pushq	%rdi
+
+	cmpl	$-4095, %eax
+	jae SYSCALL_ERROR_LABEL		/* Branch forward if it failed.  */
+
+	/* Normal return.  */
+.Lpseudo_end:
+	ret
+
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)