lib/libc/powerpc64/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:      mflr    %r0;                                            \
  46         std     %r0,16(%r1);                                    \
  47         stdu    %r1,-48(%r1);                                   \
  48         bl      CNAME(HIDENAME(cerror));                        \
  49         nop;                                                    \
  50         addi    %r1,%r1,48;                                     \
  51         ld      %r0,16(%r1);                                    \
  52         mtlr    %r0;                                            \
  53         blr;                                                    \
  54 ENTRY(__CONCAT(__sys_,x));                                      \
  55         .weak   CNAME(x);                                       \
  56         .set    CNAME(x),CNAME(__CONCAT(__sys_,x));             \
  57         .weak   CNAME(__CONCAT(_,x));                           \
  58         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  59         _SYSCALL(x);                                            \
  60         bso     2b
  61
  62 #define PSEUDO(x)                                               \
  63         .text;                                                  \
  64         .align 2;                                               \
  65 ENTRY(__CONCAT(__sys_,x));                                      \
  66         .weak   CNAME(__CONCAT(_,x));                           \
  67         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  68         _SYSCALL(x);                                            \
  69         bnslr;                                                  \
  70         mflr    %r0;                                            \
  71         std     %r0,16(%r1);                                    \
  72         stdu    %r1,-48(%r1);                                   \
  73         bl      CNAME(HIDENAME(cerror));                        \
  74         nop;                                                    \
  75         addi    %r1,%r1,48;                                     \
  76         ld      %r0,16(%r1);                                    \
  77         mtlr    %r0;                                            \
  78         blr;
  79
  80 #define RSYSCALL(x)                                             \
  81         .text;                                                  \
  82         .align 2;                                               \
  83 ENTRY(__CONCAT(__sys_,x));                                      \
  84         .weak   CNAME(x);                                       \
  85         .set    CNAME(x),CNAME(__CONCAT(__sys_,x));             \
  86         .weak   CNAME(__CONCAT(_,x));                           \
  87         .set    CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
  88         _SYSCALL(x);                                            \
  89         bnslr;                                                  \
  90                                                                 \
  91         mflr    %r0;                                            \
  92         std     %r0,16(%r1);                                    \
  93         stdu    %r1,-48(%r1);                                   \
  94         bl      CNAME(HIDENAME(cerror));                        \
  95         nop;                                                    \
  96         addi    %r1,%r1,48;                                     \
  97         ld      %r0,16(%r1);                                    \
  98         mtlr    %r0;                                            \
  99         blr;