threads.subproj/i386.subproj/thread.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Mach Operating System
  24  * Copyright (c) 1989 Carnegie-Mellon University
  25  * All rights reserved.  The CMU software License Agreement specifies
  26  * the terms and conditions for use and redistribution.
  27  */
  28
  29 /*
  30  * 386/thread.c
  31  *
  32  * Cproc startup for 386 MTHREAD implementation.
  33  */
  34
  35 #include <cthreads.h>
  36 #include <mach/mach.h>
  37 #include <mach/i386/thread_status.h>
  38 #include "cthread_internals.h"
  39
  40 void
  41 _pthread_set_self(p)
  42         cproc_t p;
  43 {
  44         asm("pushl      %0" : : "m" (p));
  45         asm("pushl      $0");                   // fake the kernel out
  46         asm("movl       $1, %%eax" : : : "ax");
  47         asm("lcall      $0x3b, $0");
  48 }
  49
  50 void *
  51 pthread_self()
  52 {
  53         asm("movl       $0, %eax");
  54         asm("lcall      $0x3b, $0");
  55 }