i386/pthreads/thread_start.s

   1 /*
   2  * Copyright (c) 2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include "pthread_machdep.h"
  25
  26 .text
  27 .align 2, 0x90
  28 .globl _thread_start
  29 _thread_start:
  30 // This routine is never called directly by user code, jumped from kernel
  31         push   %ebp
  32         mov    %esp,%ebp
  33         sub    $28,%esp         // align the stack
  34         mov    %esi,20(%esp)    //arg6
  35         mov    %edi,16(%esp)    //arg5
  36         mov    %edx,12(%esp)    //arg4
  37         mov    %ecx,8(%esp)     //arg3
  38         mov    %ebx,4(%esp)     //arg2
  39         mov    %eax,(%esp)      //arg1
  40         call   __pthread_start
  41         leave
  42         ret
  43