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 /* 35 * An application should not include this header directly. Instead it 36 * should be included only through the inclusion of other Sun headers. 37 * 38 * The purpose of this header is to provide the type definitions for 39 * the va_list argument used by a number of printf and printf like 40 * functions. The headers that define these various function prototypes 41 * #include this header directly. These include but are not necessarily 42 * limited to <stdio.h>, <stdio_iso.h>, <wchar_iso.h>, <strlog.h> and 43 * <syslog.h>. The type definitions included in this header are for 44 * the benefit of consumers of va_list. 45 * 46 * Any application that accepts variable argument lists must as documented, 47 * include either <varargs.h> or the preferred <stdarg.h>. Doing so will 48 * pull in the appropriate compiler protocols defined in <sys/va_impl.h> 49 * which is in turn is included by <varargs.h> and <stdarg.h>. See comments 50 * in <sys/va_impl.h> for more detailed information regarding implementation 51 * and compiler specific protocols. 52 */ 53 54 /* 55 * The common definitions exported by this header or compilers using 56 * this header are: 57 * 58 * the identifier __builtin_va_alist for the variable list pseudo parameter 59 * the type __va_alist_type for the variable list pseudo parameter 60 * the type __va_list defining the type of the variable list iterator 61 * 62 * The feature macros (e.g. __BUILTIN_VA_STRUCT) and compiler macros 63 * (__GNUC__) and processor macros (e.g. __amd64) are intended to be 64 * defined by the compilation system, not the user of the system. 65 */ 66 67 #include <sys/isa_defs.h> /* sys/isa_defs needed for _LP64. */ 68 69 #ifdef __cplusplus 70 extern "C" { 71 #endif 72 73 #if defined(_LP64) 74 #define __va_alist_type long 75 #else 76 #define __va_alist_type int 77 #endif 78 79 #if defined(__STDC__) /* source language is ISO C or C++ */ 80 81 #define __va_void(expr) ((void)expr) 82 #define __va_ptr_base void 83 84 #else /* source language is K&R C */ 85 86 #define __va_void(expr) expr 87 #define __va_ptr_base char 88 89 #endif /* __STDC__ */ 90 91 #if defined(__BUILTIN_VA_STRUCT) && !defined(__lint) /* -------- protocol */ 92 93 #if defined(__amd64) /* processor */ 94 95 typedef struct __va_list_element { 96 unsigned int __va_gp_offset; 97 unsigned int __va_fp_offset; 98 void *__va_overflow_arg_area; 99 void *__va_reg_sve_area; 100 } __va_list[1]; 101 102 /* Other ISA __va_list structures added here under #elif */ 103 104 #else /* processor */ 105 106 #error("No __va_list structure defined for ISA") 107 108 #endif /* processor */ 109 110 #elif (defined(__GNUC__) && ((__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || \ 111 (__GNUC__ >= 3))) && !defined(__lint) /* ---------------- protocol */ 112 113 #define __GNUC_VA_LIST 114 115 typedef __builtin_va_list __gnuc_va_list; 116 /* 117 * XX64 This seems unnecessary .. but is needed because vcmn_err is 118 * defined with __va_list instead of plain old va_list. 119 * Perhaps that should be fixed! 120 */ 121 typedef __builtin_va_list __va_list; 122 123 #else /* default */ /* ---------------- protocol */ 124 125 typedef __va_ptr_base *__va_list; 126 127 #endif /* -------------------------------------------------------- protocol */ 128 129 #ifdef __cplusplus 130 } 131 #endif 132 133 #endif /* _SYS_VA_LIST_H */ 134