diff options
Diffstat (limited to 'lib/libc_r/arch/i386/_atomic_lock.S')
| -rw-r--r-- | lib/libc_r/arch/i386/_atomic_lock.S | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/lib/libc_r/arch/i386/_atomic_lock.S b/lib/libc_r/arch/i386/_atomic_lock.S deleted file mode 100644 index 7dba53c..0000000 --- a/lib/libc_r/arch/i386/_atomic_lock.S +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>. - * All rights reserved. - * copyright Douglas Santry 1996 - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the above copyright is retained - * in the source form. - * - * THIS SOFTWARE IS PROVIDED BY Douglas Santry AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL Douglas Santry OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if defined(LIBC_RCS) && !defined(lint) - .text - .asciz "$FreeBSD$" -#endif /* LIBC_RCS and not lint */ - -#include <machine/asm.h> - -/* - * Atomicly lock a location with an identifier provided the location - * is not currently locked. - * - * long _atomic_lock(long *); - * eax will contain the return value (zero if lock obtained). - */ -ENTRY(_atomic_lock) - movl 4(%esp), %ecx - movl $1, %eax - xchg %eax, (%ecx) - ret -END(_atomic_lock) - |
