lib/libc/arch/vax/SYS.h

   1 /*      $NetBSD: SYS.h,v 1.10 2003/08/07 16:42:30 agc Exp $ */
   2 /*
   3  * Copyright (c) 1983, 1993
   4  *      The Regents of the University of California.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  *      @(#)SYS.h       8.1 (Berkeley) 6/4/93
  31  */
  32
  33 #include <machine/asm.h>
  34 #include <sys/syscall.h>
  35
  36 #ifdef __STDC__
  37 #define SYSTRAP(x)      chmk $ SYS_ ## x
  38 #else
  39 #define SYSTRAP(x)      chmk $ SYS_/**/x
  40 #endif
  41
  42 #define _SYSCALL_NOERROR(x,y)                                           \
  43         ENTRY(x,0);                                                     \
  44         SYSTRAP(y)
  45
  46 #define _SYSCALL(x,y)                                                   \
  47         err: nop; nop; jmp CERROR+2;                                    \
  48         _SYSCALL_NOERROR(x,y);                                          \
  49         jcs err+2
  50
  51 #define SYSCALL_NOERROR(x)                                              \
  52         _SYSCALL_NOERROR(x,x)
  53
  54 #define SYSCALL(x)                                                      \
  55         _SYSCALL(x,x)
  56
  57 #define PSEUDO_NOERROR(x,y)                                             \
  58         _SYSCALL_NOERROR(x,y);                                          \
  59         ret
  60
  61 #define PSEUDO(x,y)                                                     \
  62         _SYSCALL(x,y);                                                  \
  63         ret
  64
  65 #define RSYSCALL_NOERROR(x)                                             \
  66         PSEUDO_NOERROR(x,x)
  67
  68 #define RSYSCALL(x)                                                     \
  69         PSEUDO(x,x)
  70
  71 #ifdef WEAK_ALIAS
  72 #define WSYSCALL(weak,strong)                                           \
  73         WEAK_ALIAS(weak,strong);                                        \
  74         PSEUDO(strong,weak)
  75 #else
  76 #define WSYSCALL(weak,strong)                                           \
  77         PSEUDO(weak,weak)
  78 #endif
  79
  80 #define ASMSTR          .asciz
  81
  82 #ifdef __ELF__
  83 #define CERROR  _C_LABEL(__cerror)
  84 #define CURBRK  _C_LABEL(__curbrk)
  85 #else
  86 #define CERROR  _ASM_LABEL(cerror)
  87 #define CURBRK  _ASM_LABEL(curbrk)
  88 #endif
  89
  90         .globl  CERROR