osfmk/libsa/ppc/va_list.h

   1 /*
   2  * Copyright (c) 2000 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 #if !defined(APPLE) && !defined(NeXT)
  26 /*
  27  * @OSF_COPYRIGHT@
  28  */
  29 /*
  30  * HISTORY
  31  *
  32  * Revision 1.1.1.1  1998/09/22 21:05:51  wsanchez
  33  * Import of Mac OS X kernel (~semeria)
  34  *
  35  * Revision 1.1.1.1  1998/03/07 02:25:36  wsanchez
  36  * Import of OSF Mach kernel (~mburg)
  37  *
  38  * Revision 1.1.2.1  1996/12/09  16:59:07  stephen
  39  *      nmklinux_1.0b3_shared into pmk1.1
  40  *      [1996/12/09  11:18:59  stephen]
  41  *
  42  * Revision 1.1.4.1  1996/04/11  14:37:05  emcmanus
  43  *      Copied from mainline.ppc.
  44  *      [1996/04/11  14:36:22  emcmanus]
  45  *
  46  * Revision 1.1.2.1  1995/12/28  16:37:24  barbou
  47  *      Self-Contained Mach Distribution:
  48  *      created.
  49  *      [95/12/28            barbou]
  50  *
  51  * $EndLog$
  52  */
  53
  54 /*
  55  * Four possible situations:
  56  *      - We are being included by {var,std}args.h (or anyone) before stdio.h.
  57  *        define real type.
  58  *
  59  *      - We are being included by stdio.h before {var,std}args.h.
  60  *        define hidden type for prototypes in stdio, don't pollute namespace.
  61  *
  62  *      - We are being included by {var,std}args.h after stdio.h.
  63  *        define real type to match hidden type.  no longer use hidden type.
  64  *
  65  *      - We are being included again after defining the real va_list.
  66  *        do nothing.
  67  *
  68  */
  69
  70 #if     !defined(_HIDDEN_VA_LIST) && !defined(_VA_LIST)
  71
  72 /* Define __gnuc_va_list. */
  73
  74 #ifndef __GNUC_VA_LIST
  75 /*
  76  * If this is for internal libc use, don't define
  77  * anything but __gnuc_va_list.
  78  */
  79 #define __GNUC_VA_LIST
  80 typedef struct {
  81   char gpr;                     /* index into the array of 8 GPRs stored in the
  82                                    register save area gpr=0 corresponds to r3,
  83                                    gpr=1 to r4, etc. */
  84   char fpr;                     /* index into the array of 8 FPRs stored in the
  85                                    register save area fpr=0 corresponds to f1,
  86                                    fpr=1 to f2, etc. */
  87   char *overflow_arg_area;      /* location on stack that holds the next
  88                                    overflow argument */
  89   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
  90 } __gnuc_va_list[1];
  91
  92 #endif /* not __GNUC_VA_LIST */
  93
  94 #define _VA_LIST
  95 typedef struct {
  96   char gpr;                     /* index into the array of 8 GPRs stored in the
  97                                    register save area gpr=0 corresponds to r3,
  98                                    gpr=1 to r4, etc. */
  99   char fpr;                     /* index into the array of 8 FPRs stored in the
 100                                    register save area fpr=0 corresponds to f1,
 101                                    fpr=1 to f2, etc. */
 102   char *overflow_arg_area;      /* location on stack that holds the next
 103                                    overflow argument */
 104   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
 105 } va_list[1];
 106
 107 #elif   defined(_HIDDEN_VA_LIST) && !defined(_VA_LIST)
 108
 109 #define _VA_LIST
 110 typedef struct {
 111   char gpr;                     /* index into the array of 8 GPRs stored in the
 112                                    register save area gpr=0 corresponds to r3,
 113                                    gpr=1 to r4, etc. */
 114   char fpr;                     /* index into the array of 8 FPRs stored in the
 115                                    register save area fpr=0 corresponds to f1,
 116                                    fpr=1 to f2, etc. */
 117   char *overflow_arg_area;      /* location on stack that holds the next
 118                                    overflow argument */
 119   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
 120 } __va_list[1];
 121
 122 #elif   defined(_HIDDEN_VA_LIST) && defined(_VA_LIST)
 123
 124 #undef _HIDDEN_VA_LIST
 125 typedef __va_list va_list;
 126
 127 #endif
 128
 129 #endif