Update to 960810. cvs/libc-ud-960810 cvs/libc-960811

Sat Aug 10 13:17:27 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* shadow.h: New file.

	* sysdeps/unix/sysv/linux/netinet/in.h: Move
 	__BEGIN_DECLS/__END_DECLS up so ntohl() et al are bracketed as
 	well.

	* socket/sys/socket.h [__cplusplus]: Use old-style __SOCKADDR_ARG.
	g++ 2.7.2 (and earlier) has no transparent unions support.

Fri Aug  9 18:50:06 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* sysdeps/unix/sysv/linux/alpha/ioperm.c (_bus_base_sparse): New
	function to determine the base address of sparse bus memory.
	(APECS_*): Rename to CIA_*.
	(APECS_SPARSE_MEM, CIA_SPARSE_MEM): New macros.
	(platform): Add sparse_bus_memory_base member and initialize.
	(sparse_bus_memory_base): New variable.

Tue Aug  6 10:23:18 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* sysdeps/posix/ttyname_r.c (ttyname_r),
	sysdeps/posix/ttyname.c (ttyname): Return -1/NULL if
	!__isatty(fd) (POSIX.1 says so.)

	* sysdeps/unix/getlogin.c (getlogin): Fix to check fd 0 only.
  	This is not a gross hack, after all---for compatibility,
 	getlogin() really should check fd 0 only and not try to base its
 	operation on the controlling tty.

Wed Jul 17 10:54:20 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* sysdeps/unix/getlogin.c (getlogin): Add static variable NAME,
 	change utmp_data from static to auto.

Sun Aug 11 02:56:08 1996  Ulrich Drepper  <drepper@cygnus.com>

	* posix/unistd.h [__USE_MISC]: Add prototype for `nice'.
	Reported by David Mosberger-Tang.

1 files changed, 80 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/clone.S b/sysdeps/unix/sysv/linux/i386/clone.S
new file mode 100644
index 0000000000..02f561927e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/clone.S
@@ -0,0 +1,80 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+   Contributed by Richard Henderson (rth@tamu.edu)
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* clone() is even more special than fork() as it mucks with stacks
+   and invokes a function in the right context after its all over.  */
+
+#include <sysdep.h>
+#include <errnos.h>
+
+/* int clone(int (*fn)(), void *child_stack, int flags, int nargs, ...) */
+
+        .text
+ENTRY(__clone)
+	/* Sanity check arguments.  */
+	movl	$-EINVAL,%eax
+	movl	4(%esp),%ecx		/* no NULL function pointers */
+	testl	%ecx,%ecx
+	jz	syscall_error
+	movl	8(%esp),%ecx		/* no NULL stack pointers */
+	testl	%ecx,%ecx
+	jz	syscall_error
+	movl	16(%esp),%edx		/* no negative argument counts */
+	testl	%edx,%edx
+	js	syscall_error
+
+	/* Allocate space on the new stack and copy args over */
+	movl	%edx,%eax
+	negl	%eax
+	lea	-4(%ecx,%eax,4),%ecx
+	jz	2f
+1:	movl	16(%esp,%edx,4),%eax
+	movl	%eax,0(%ecx,%edx,4)
+	dec	%edx
+	jnz	1b
+2:
+	/* Save the function pointer as the zeroth argument.
+	   It will be popped off in the child in the ebx frobbing below.  */
+	movl	4(%esp),%eax
+	movl	%eax,0(%ecx)
+
+	/* Do the system call */
+	pushl	%ebx
+	movl	16(%esp),%ebx
+	movl	$SYS_ify(clone),%eax
+	int	$0x80
+	popl	%ebx
+
+	test	%eax,%eax
+	jl	syscall_error
+	jz	thread_start
+
+	ret
+
+	SYSCALL_ERROR_HANDLER
+
+thread_start:
+	subl	%ebp,%ebp	/* terminate the stack frame */
+	call	*%ebx
+#ifdef PIC
+	call	_exit@PLT
+#else
+	call	_exit
+#endif
+
+weak_alias(__clone, clone)