ppc/sys/SYS.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
  23  *
  24  *      File:   SYS.h
  25  *
  26  *      Definition of the user side of the UNIX system call interface
  27  *      for M98K.
  28  *
  29  *      Errors are flagged by the location of the trap return (ie., which
  30  *      instruction is executed upon rfi):
  31  *
  32  *              SC PC + 4:      Error (typically branch to cerror())
  33  *              SC PC + 8:      Success
  34  *
  35  * HISTORY
  36  * 18-Nov-92    Ben Fathi (benf@next.com)
  37  *      Ported to m98k.
  38  *
  39  *  9-Jan-92    Peter King (king@next.com)
  40  *      Created.
  41  */
  42
  43 #define KERNEL_PRIVATE  1
  44 /*
  45  * Header files.
  46  */
  47 #import <architecture/ppc/asm_help.h>
  48 #import <architecture/ppc/pseudo_inst.h>
  49 #import <mach/ppc/exception.h>
  50 #import <sys/syscall.h>
  51
  52 /* From rhapsody kernel mach/ppc/syscall_sw.h */
  53 #define kernel_trap_args_0
  54 #define kernel_trap_args_1
  55 #define kernel_trap_args_2
  56 #define kernel_trap_args_3
  57 #define kernel_trap_args_4
  58 #define kernel_trap_args_5
  59 #define kernel_trap_args_6
  60 #define kernel_trap_args_7
  61
  62 /*
  63  * simple_kernel_trap -- Mach system calls with 8 or less args
  64  * Args are passed in a0 - a7, system call number in r0.
  65  * Do a "sc" instruction to enter kernel.
  66  */
  67 #define simple_kernel_trap(trap_name, trap_number)      \
  68         .globl  _##trap_name                            @\
  69 _##trap_name:                                           @\
  70         li      r0,trap_number                           @\
  71         sc                                               @\
  72         blr                                              @\
  73         END(trap_name)
  74
  75 #define kernel_trap_0(trap_name,trap_number)             \
  76         simple_kernel_trap(trap_name,trap_number)
  77
  78 #define kernel_trap_1(trap_name,trap_number)             \
  79         simple_kernel_trap(trap_name,trap_number)
  80
  81 #define kernel_trap_2(trap_name,trap_number)             \
  82         simple_kernel_trap(trap_name,trap_number)
  83
  84 #define kernel_trap_3(trap_name,trap_number)             \
  85         simple_kernel_trap(trap_name,trap_number)
  86
  87 #define kernel_trap_4(trap_name,trap_number)             \
  88         simple_kernel_trap(trap_name,trap_number)
  89
  90 #define kernel_trap_5(trap_name,trap_number)             \
  91         simple_kernel_trap(trap_name,trap_number)
  92
  93 #define kernel_trap_6(trap_name,trap_number)             \
  94         simple_kernel_trap(trap_name,trap_number)
  95
  96 #define kernel_trap_7(trap_name,trap_number)             \
  97         simple_kernel_trap(trap_name,trap_number)
  98
  99 #define kernel_trap_8(trap_name,trap_number)             \
 100         simple_kernel_trap(trap_name,trap_number)
 101
 102 #define kernel_trap_9(trap_name,trap_number)             \
 103         simple_kernel_trap(trap_name,trap_number)
 104
 105 /* End of rhapsody kernel mach/ppc/syscall_sw.h */
 106
 107 /*
 108  * Macros.
 109  */
 110
 111 #define SYSCALL(name, nargs)                    \
 112         .globl  cerror                          @\
 113 LEAF(_##name)                                   @\
 114         kernel_trap_args_##nargs                @\
 115         li      r0,SYS_##name                   @\
 116         sc                                      @\
 117         b       1f                              @\
 118         b       2f                              @\
 119 1:      BRANCH_EXTERN(cerror)                   @\
 120 .text                                           \
 121 2:      nop
 122
 123 #define SYSCALL_NONAME(name, nargs)             \
 124         .globl  cerror                          @\
 125         kernel_trap_args_##nargs                @\
 126         li      r0,SYS_##name                   @\
 127         sc                                      @\
 128         b       1f                              @\
 129         b       2f                              @\
 130 1:      BRANCH_EXTERN(cerror)                   @\
 131 .text                                           \
 132 2:      nop
 133
 134 #define PSEUDO(pseudo, name, nargs)             \
 135 LEAF(_##pseudo)                                 @\
 136         SYSCALL_NONAME(name, nargs)
 137
 138
 139 #undef END
 140 #import <mach/ppc/syscall_sw.h>
 141
 142 #if !defined(SYS_getdirentriesattr)
 143 #define SYS_getdirentriesattr 222
 144 #endif
 145
 146 #if !defined(SYS_semsys)
 147 #define SYS_semsys      251
 148 #define SYS_msgsys      252
 149 #define SYS_shmsys      253
 150 #define SYS_semctl      254
 151 #define SYS_semget      255
 152 #define SYS_semop       256
 153 #define SYS_semconfig   257
 154 #define SYS_msgctl      258
 155 #define SYS_msgget      259
 156 #define SYS_msgsnd      260
 157 #define SYS_msgrcv      261
 158 #define SYS_shmat       262
 159 #define SYS_shmctl      263
 160 #define SYS_shmdt       264
 161 #define SYS_shmget      265
 162 #endif
 163