lib/libc/powerpc/SYS.h

   1 /*-
   2  * Copyright (c) 2002 Benno Rice.  All rights reserved.
   3  * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      $NetBSD: SYS.h,v 1.8 2002/01/14 00:55:56 thorpej Exp $
  30  * $FreeBSD$
  31  */
  32
  33 #include <sys/syscall.h>
  34 #include <machine/asm.h>
  35
  36 #define _SYSCALL(x)                                             \
  37         .text;                                                  \
  38         .align 2;                                               \
  39         li      0,(__CONCAT(SYS_,x));                           \
  40         sc
  41
  42 #define SYSCALL(x)                                              \
  43         .text;                                                  \
  44         .align 2;                                               \
  45 2:      b       PIC_PLT(CNAME(HIDENAME(cerror)));               \
  46 ENTRY(__CONCAT(__sys_,x));                                      \
  47         .weak   CNAME(x);                                       \
  48         .set    CNAME(x),CNAME(__CONCAT(__sys_,x));             \
  49         .weak   CNAME(__CONCAT(_,x));                           \
  50         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  51         _SYSCALL(x);                                            \
  52         bso     2b
  53
  54 #define PSEUDO(x)                                               \
  55         .text;                                                  \
  56         .align 2;                                               \
  57 ENTRY(__CONCAT(__sys_,x));                                      \
  58         .weak   CNAME(__CONCAT(_,x));                           \
  59         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  60         _SYSCALL(x);                                            \
  61         bnslr;                                                  \
  62         b       PIC_PLT(CNAME(HIDENAME(cerror)))
  63
  64 #define RSYSCALL(x)                                             \
  65         .text;                                                  \
  66         .align 2;                                               \
  67 2:      b       PIC_PLT(CNAME(HIDENAME(cerror)));               \
  68 ENTRY(__CONCAT(__sys_,x));                                      \
  69         .weak   CNAME(x);                                       \
  70         .set    CNAME(x),CNAME(__CONCAT(__sys_,x));             \
  71         .weak   CNAME(__CONCAT(_,x));                           \
  72         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  73         _SYSCALL(x);                                            \
  74         bnslr;                                                  \
  75         b       PIC_PLT(CNAME(HIDENAME(cerror)))