lib/libc/arch/hppa/SYS.h

   1 /*      $NetBSD: SYS.h,v 1.7 2009/11/03 05:07:25 snj Exp $      */
   2
   3 /*      $OpenBSD: SYS.h,v 1.9 2001/09/20 20:52:09 millert Exp $ */
   4
   5 /*
   6  * Copyright (c) 1998-2002 Michael Shalayeff
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF MIND
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/syscall.h>
  31 #include <machine/asm.h>
  32 #include <machine/vmparam.h>
  33 #undef _LOCORE
  34 #define _LOCORE
  35 #include <machine/frame.h>
  36
  37 #define SYSENTRY(x)     LEAF_ENTRY(x)
  38 #define SYSEXIT(x)      EXIT(x)
  39
  40 #define SYSCALL(x)                              !\
  41         stw     %rp, HPPA_FRAME_ERP(%sr0,%sp)   !\
  42         ldil    L%SYSCALLGATE, %r1              !\
  43         ble     4(%sr7, %r1)                    !\
  44         ldi     __CONCAT(SYS_,x), %t1           !\
  45         .import __cerror, code                  !\
  46         comb,<> %r0, %t1, __cerror              !\
  47         ldw     HPPA_FRAME_ERP(%sr0,%sp), %rp
  48
  49 #define PSEUDO(x,y)                             !\
  50 SYSENTRY(x)                                     !\
  51         SYSCALL(y)                              !\
  52         bv      %r0(%rp)                        !\
  53         nop                                     !\
  54 SYSEXIT(x)
  55
  56 #define PSEUDO_NOERROR(x,y)                     !\
  57 SYSENTRY(x)                                     !\
  58         stw     %rp, HPPA_FRAME_ERP(%sr0,%sp)   !\
  59         ldil    L%SYSCALLGATE, %r1              !\
  60         ble     4(%sr7, %r1)                    !\
  61         ldi     __CONCAT(SYS_,y), %t1           !\
  62         ldw     HPPA_FRAME_ERP(%sr0,%sp), %rp   !\
  63         bv      %r0(%rp)                        !\
  64         nop                                     !\
  65 SYSEXIT(x)
  66
  67 #define RSYSCALL(x)             PSEUDO(x,x)
  68 #define RSYSCALL_NOERROR(x)     PSEUDO_NOERROR(x,x)
  69
  70 #ifdef WEAK_ALIAS
  71 #define WSYSCALL(weak,strong)           !\
  72         WEAK_ALIAS(weak,strong)         !\
  73         PSEUDO(strong,weak)
  74 #else
  75 #define WSYSCALL(weak,strong)           !\
  76         PSEUDO(weak,weak)
  77 #endif