1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #ifndef _SYS_VA_LIST_H 32 #define _SYS_VA_LIST_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 /* 37 * An application should not include this header directly. Instead it 38 * should be included only through the inclusion of other Sun headers. 39 * 40 * The purpose of this header is to provide the type definitions for 41 * the va_list argument used by a number of printf and printf like 42 * functions. The headers that define these various function prototypes 43 * #include this header directly. These include but are not necessarily 44 * limited to <stdio.h>, <stdio_iso.h>, <wchar_iso.h>, <strlog.h> and 45 * <syslog.h>. The type definitions included in this header are for 46 * the benefit of consumers of va_list. 47 * 48 * Any application that accepts variable argument lists must as documented, 49 * include either <varargs.h> or the preferred <stdarg.h>. Doing so will 50 * pull in the appropriate compiler protocols defined in <sys/va_impl.h> 51 * which is in turn is included by <varargs.h> and <stdarg.h>. See comments 52 * in <sys/va_impl.h> for more detailed information regarding implementation 53 * and compiler specific protocols. 54 */ 55 56 /* 57 * The common definitions exported by this header or compilers using 58 * this header are: 59 * 60 * the identifier __builtin_va_alist for the variable list pseudo parameter 61 * the type __va_alist_type for the variable list pseudo parameter 62 * the type __va_list defining the type of the variable list iterator 63 * 64 * The feature macros (e.g. __BUILTIN_VA_STRUCT) and compiler macros 65 * (__GNUC__) and processor macros (e.g. __amd64) are intended to be 66 * defined by the compilation system, not the user of the system. 67 */ 68 69 #include <sys/isa_defs.h> /* sys/isa_defs needed for _LP64. */ 70 71 #ifdef __cplusplus 72 extern "C" { 73 #endif 74 75 #if defined(_LP64) 76 #define __va_alist_type long 77 #else 78 #define __va_alist_type int 79 #endif 80 81 #if defined(__STDC__) /* source language is ISO C or C++ */ 82 83 #define __va_void(expr) ((void)expr) 84 #define __va_ptr_base void 85 86 #else /* source language is K&R C */ 87 88 #define __va_void(expr) expr 89 #define __va_ptr_base char 90 91 #endif /* __STDC__ */ 92 93 #if defined(__BUILTIN_VA_STRUCT) && !defined(__lint) /* -------- protocol */ 94 95 #if defined(__amd64) /* processor */ 96 97 typedef struct __va_list_element { 98 unsigned int __va_gp_offset; 99 unsigned int __va_fp_offset; 100 void *__va_overflow_arg_area; 101 void *__va_reg_sve_area; 102 } __va_list[1]; 103 104 /* Other ISA __va_list structures added here under #elif */ 105 106 #else /* processor */ 107 108 #error("No __va_list structure defined for ISA") 109 110 #endif /* processor */ 111 112 #elif (defined(__GNUC__) && ((__GNUC__ == 2 && __GNUC_MINOR >= 96) || \ 113 (__GNUC__ >= 3))) && !defined(__lint) /* ---------------- protocol */ 114 115 #define __GNUC_VA_LIST 116 117 typedef __builtin_va_list __gnuc_va_list; 118 /* 119 * XX64 This seems unnecessary .. but is needed because vcmn_err is 120 * defined with __va_list instead of plain old va_list. 121 * Perhaps that should be fixed! 122 */ 123 typedef __builtin_va_list __va_list; 124 125 #else /* default */ /* ---------------- protocol */ 126 127 typedef __va_ptr_base *__va_list; 128 129 #endif /* -------------------------------------------------------- protocol */ 130 131 #ifdef __cplusplus 132 } 133 #endif 134 135 #endif /* _SYS_VA_LIST_H */ 136