ppc/sys/SYS.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
  26  *
  27  *      File:   SYS.h
  28  *
  29  *      Definition of the user side of the UNIX system call interface
  30  *      for M98K.
  31  *
  32  *      Errors are flagged by the location of the trap return (ie., which
  33  *      instruction is executed upon rfi):
  34  *
  35  *              SC PC + 4:      Error (typically branch to cerror())
  36  *              SC PC + 8:      Success
  37  *
  38  * HISTORY
  39  * 18-Nov-92    Ben Fathi (benf@next.com)
  40  *      Ported to m98k.
  41  *
  42  *  9-Jan-92    Peter King (king@next.com)
  43  *      Created.
  44  */
  45
  46 #define KERNEL_PRIVATE  1
  47 /*
  48  * Header files.
  49  */
  50 #import <architecture/ppc/asm_help.h>
  51 #import <architecture/ppc/pseudo_inst.h>
  52 #import <mach/ppc/exception.h>
  53 #import <sys/syscall.h>
  54
  55 /* From rhapsody kernel mach/ppc/syscall_sw.h */
  56 #define kernel_trap_args_0
  57 #define kernel_trap_args_1
  58 #define kernel_trap_args_2
  59 #define kernel_trap_args_3
  60 #define kernel_trap_args_4
  61 #define kernel_trap_args_5
  62 #define kernel_trap_args_6
  63 #define kernel_trap_args_7
  64
  65 /*
  66  * simple_kernel_trap -- Mach system calls with 8 or less args
  67  * Args are passed in a0 - a7, system call number in r0.
  68  * Do a "sc" instruction to enter kernel.
  69  */
  70 #define simple_kernel_trap(trap_name, trap_number)      \
  71         .globl  _##trap_name                            @\
  72 _##trap_name:                                           @\
  73         li      r0,trap_number                           @\
  74         sc                                               @\
  75         blr                                              @\
  76         END(trap_name)
  77
  78 #define kernel_trap_0(trap_name,trap_number)             \
  79         simple_kernel_trap(trap_name,trap_number)
  80
  81 #define kernel_trap_1(trap_name,trap_number)             \
  82         simple_kernel_trap(trap_name,trap_number)
  83
  84 #define kernel_trap_2(trap_name,trap_number)             \
  85         simple_kernel_trap(trap_name,trap_number)
  86
  87 #define kernel_trap_3(trap_name,trap_number)             \
  88         simple_kernel_trap(trap_name,trap_number)
  89
  90 #define kernel_trap_4(trap_name,trap_number)             \
  91         simple_kernel_trap(trap_name,trap_number)
  92
  93 #define kernel_trap_5(trap_name,trap_number)             \
  94         simple_kernel_trap(trap_name,trap_number)
  95
  96 #define kernel_trap_6(trap_name,trap_number)             \
  97         simple_kernel_trap(trap_name,trap_number)
  98
  99 #define kernel_trap_7(trap_name,trap_number)             \
 100         simple_kernel_trap(trap_name,trap_number)
 101
 102 #define kernel_trap_8(trap_name,trap_number)             \
 103         simple_kernel_trap(trap_name,trap_number)
 104
 105 #define kernel_trap_9(trap_name,trap_number)             \
 106         simple_kernel_trap(trap_name,trap_number)
 107
 108 /* End of rhapsody kernel mach/ppc/syscall_sw.h */
 109
 110 /*
 111  * Macros.
 112  */
 113
 114 #define SYSCALL(name, nargs)                    \
 115         .globl  cerror                          @\
 116 LEAF(_##name)                                   @\
 117         kernel_trap_args_##nargs                @\
 118         li      r0,SYS_##name                   @\
 119         sc                                      @\
 120         b       1f                              @\
 121         b       2f                              @\
 122 1:      BRANCH_EXTERN(cerror)                   @\
 123 .text                                           \
 124 2:      nop
 125
 126 #define SYSCALL_NONAME(name, nargs)             \
 127         .globl  cerror                          @\
 128         kernel_trap_args_##nargs                @\
 129         li      r0,SYS_##name                   @\
 130         sc                                      @\
 131         b       1f                              @\
 132         b       2f                              @\
 133 1:      BRANCH_EXTERN(cerror)                   @\
 134 .text                                           \
 135 2:      nop
 136
 137 #define PSEUDO(pseudo, name, nargs)             \
 138 LEAF(_##pseudo)                                 @\
 139         SYSCALL_NONAME(name, nargs)
 140
 141
 142 #undef END
 143 #import <mach/ppc/syscall_sw.h>
 144
 145 #if !defined(SYS_getdirentriesattr)
 146 #define SYS_getdirentriesattr 222
 147 #endif
 148
 149 #if !defined(SYS_semsys)
 150 #define SYS_semsys      251
 151 #define SYS_msgsys      252
 152 #define SYS_shmsys      253
 153 #define SYS_semctl      254
 154 #define SYS_semget      255
 155 #define SYS_semop       256
 156 #define SYS_semconfig   257
 157 #define SYS_msgctl      258
 158 #define SYS_msgget      259
 159 #define SYS_msgsnd      260
 160 #define SYS_msgrcv      261
 161 #define SYS_shmat       262
 162 #define SYS_shmctl      263
 163 #define SYS_shmdt       264
 164 #define SYS_shmget      265
 165 #endif
 166