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  * 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 #if !defined(APPLE) && !defined(NeXT)
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * HISTORY
  28  *
  29  * Revision 1.1.1.1  1998/09/22 21:05:51  wsanchez
  30  * Import of Mac OS X kernel (~semeria)
  31  *
  32  * Revision 1.1.1.1  1998/03/07 02:25:36  wsanchez
  33  * Import of OSF Mach kernel (~mburg)
  34  *
  35  * Revision 1.1.2.1  1996/12/09  16:59:07  stephen
  36  *      nmklinux_1.0b3_shared into pmk1.1
  37  *      [1996/12/09  11:18:59  stephen]
  38  *
  39  * Revision 1.1.4.1  1996/04/11  14:37:05  emcmanus
  40  *      Copied from mainline.ppc.
  41  *      [1996/04/11  14:36:22  emcmanus]
  42  *
  43  * Revision 1.1.2.1  1995/12/28  16:37:24  barbou
  44  *      Self-Contained Mach Distribution:
  45  *      created.
  46  *      [95/12/28            barbou]
  47  *
  48  * $EndLog$
  49  */
  50
  51 /*
  52  * Four possible situations:
  53  *      - We are being included by {var,std}args.h (or anyone) before stdio.h.
  54  *        define real type.
  55  *
  56  *      - We are being included by stdio.h before {var,std}args.h.
  57  *        define hidden type for prototypes in stdio, don't pollute namespace.
  58  *
  59  *      - We are being included by {var,std}args.h after stdio.h.
  60  *        define real type to match hidden type.  no longer use hidden type.
  61  *
  62  *      - We are being included again after defining the real va_list.
  63  *        do nothing.
  64  *
  65  */
  66
  67 #if     !defined(_HIDDEN_VA_LIST) && !defined(_VA_LIST)
  68
  69 /* Define __gnuc_va_list. */
  70
  71 #ifndef __GNUC_VA_LIST
  72 /*
  73  * If this is for internal libc use, don't define
  74  * anything but __gnuc_va_list.
  75  */
  76 #define __GNUC_VA_LIST
  77 typedef struct {
  78   char gpr;                     /* index into the array of 8 GPRs stored in the
  79                                    register save area gpr=0 corresponds to r3,
  80                                    gpr=1 to r4, etc. */
  81   char fpr;                     /* index into the array of 8 FPRs stored in the
  82                                    register save area fpr=0 corresponds to f1,
  83                                    fpr=1 to f2, etc. */
  84   char *overflow_arg_area;      /* location on stack that holds the next
  85                                    overflow argument */
  86   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
  87 } __gnuc_va_list[1];
  88
  89 #endif /* not __GNUC_VA_LIST */
  90
  91 #define _VA_LIST
  92 typedef struct {
  93   char gpr;                     /* index into the array of 8 GPRs stored in the
  94                                    register save area gpr=0 corresponds to r3,
  95                                    gpr=1 to r4, etc. */
  96   char fpr;                     /* index into the array of 8 FPRs stored in the
  97                                    register save area fpr=0 corresponds to f1,
  98                                    fpr=1 to f2, etc. */
  99   char *overflow_arg_area;      /* location on stack that holds the next
 100                                    overflow argument */
 101   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
 102 } va_list[1];
 103
 104 #elif   defined(_HIDDEN_VA_LIST) && !defined(_VA_LIST)
 105
 106 #define _VA_LIST
 107 typedef struct {
 108   char gpr;                     /* index into the array of 8 GPRs stored in the
 109                                    register save area gpr=0 corresponds to r3,
 110                                    gpr=1 to r4, etc. */
 111   char fpr;                     /* index into the array of 8 FPRs stored in the
 112                                    register save area fpr=0 corresponds to f1,
 113                                    fpr=1 to f2, etc. */
 114   char *overflow_arg_area;      /* location on stack that holds the next
 115                                    overflow argument */
 116   char *reg_save_area;          /* where r3:r10 and f1:f8, if saved are stored */
 117 } __va_list[1];
 118
 119 #elif   defined(_HIDDEN_VA_LIST) && defined(_VA_LIST)
 120
 121 #undef _HIDDEN_VA_LIST
 122 typedef __va_list va_list;
 123
 124 #endif
 125
 126 #endif