usr/src/lib/libc/amd64/crt/cerror.s

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27         .file   "cerror.s"
  28
  29 / C return sequence which sets errno, returns -1.
  30
  31 #include <SYS.h>
  32
  33         ENTRY(__cerror)
  34         cmpl    $ERESTART, %eax
  35         jne     1f
  36         movl    $EINTR, %eax
  37 1:
  38         pushq   %rax
  39         call    ___errno
  40         popq    %rdx
  41         movl    %edx, (%rax)
  42         movq    $-1, %rax
  43         xorq    %rdx, %rdx
  44         ret
  45         SET_SIZE(__cerror)