lib/libpthread/arch/hppa/pthread_md.h

   1 /*      $NetBSD: pthread_md.h,v 1.6 2008/04/28 20:23:02 martin Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Nathan J. Williams.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _LIB_PTHREAD_HPPA_MD_H
  33 #define _LIB_PTHREAD_HPPA_MD_H
  34
  35 #include <machine/frame.h>
  36
  37 #define PTHREAD__ASM_RASOPS
  38
  39 static inline long
  40 pthread__sp(void)
  41 {
  42         register long sp __asm("r30");
  43
  44         return sp;
  45 }
  46
  47 #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
  48
  49 /*
  50  * Set initial, sane values for registers whose values aren't just
  51  * "don't care".
  52  */
  53 #define _INITCONTEXT_U_MD(ucp)                                          \
  54         (ucp)->uc_mcontext.__gregs[_REG_PSW] = 0x4000f;
  55
  56 /*
  57  * Usable stack space below the ucontext_t.
  58  */
  59 #define STACKSPACE      (HPPA_FRAME_SIZE)
  60
  61 /* Don't need additional memory barriers. */
  62 #define PTHREAD__ATOMIC_IS_MEMBAR
  63
  64 #endif /* !_LIB_PTHREAD_HPPA_MD_H */