lib/libc/arch/arm/SYS.h

   1 /*      $NetBSD: SYS.h,v 1.10 2011/01/14 06:12:16 matt Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   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  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
  35  */
  36
  37 #include <machine/asm.h>
  38 #include <sys/syscall.h>
  39 #include <arm/swi.h>
  40
  41 #ifdef __STDC__
  42 #define SYSTRAP(x)      swi SWI_OS_NETBSD | SYS_ ## x
  43 #else
  44 #define SYSTRAP(x)      swi SWI_OS_NETBSD | SYS_/**/x
  45 #endif
  46
  47 #ifdef __ELF__
  48 #define CERROR          _C_LABEL(__cerror)
  49 #define CURBRK          _C_LABEL(__curbrk)
  50 #else
  51 #define CERROR          _ASM_LABEL(cerror)
  52 #define CURBRK          _ASM_LABEL(curbrk)
  53 #endif
  54
  55 #define _SYSCALL_NOERROR(x,y)                                           \
  56         ENTRY(x);                                                       \
  57         SYSTRAP(y)
  58
  59 #define _SYSCALL(x, y)                                                  \
  60         _SYSCALL_NOERROR(x,y);                                          \
  61         bcs CERROR
  62
  63 #define SYSCALL_NOERROR(x)                                              \
  64         _SYSCALL_NOERROR(x,x)
  65
  66 #define SYSCALL(x)                                                      \
  67         _SYSCALL(x,x)
  68
  69
  70 #define PSEUDO_NOERROR(x,y)                                             \
  71         _SYSCALL_NOERROR(x,y);                                          \
  72         RET
  73
  74 #define PSEUDO(x,y)                                                     \
  75         _SYSCALL(x,y);                                                  \
  76         RET
  77
  78
  79 #define RSYSCALL_NOERROR(x)                                             \
  80         PSEUDO_NOERROR(x,x)
  81
  82 #define RSYSCALL(x)                                                     \
  83         PSEUDO(x,x)
  84
  85 #ifdef WEAK_ALIAS
  86 #define WSYSCALL(weak,strong)                                           \
  87         WEAK_ALIAS(weak,strong);                                        \
  88         PSEUDO(strong,weak)
  89 #else
  90 #define WSYSCALL(weak,strong)                                           \
  91         PSEUDO(weak,weak)
  92 #endif
  93
  94         .globl  CERROR