ppc/sys/SYS.h

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