libsyscall/custom/__ptrace.s

   1 /*
   2  * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. */
  29
  30 #include "SYS.h"
  31
  32 #if defined(__i386__)
  33
  34         .globl  _errno
  35
  36 LEAF(___ptrace, 0)
  37         xorl    %eax,%eax
  38         REG_TO_EXTERN(%eax,_errno)
  39         UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
  40         ret
  41
  42 #elif defined(__x86_64__)
  43
  44         .globl  _errno
  45
  46 LEAF(___ptrace, 0)
  47         xorq    %rax,%rax
  48         PICIFY(_errno)
  49         movl    %eax,(%r11)
  50         UNIX_SYSCALL_NONAME(ptrace, 4, cerror)
  51         ret
  52
  53 #else
  54 #error Unsupported architecture
  55 #endif