1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _ALLOCA_H 28*0Sstevel@tonic-gate #define _ALLOCA_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/types.h> 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #ifdef __cplusplus 35*0Sstevel@tonic-gate extern "C" { 36*0Sstevel@tonic-gate #endif 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate /* 39*0Sstevel@tonic-gate * Many compilation systems depend upon the use of special functions 40*0Sstevel@tonic-gate * built into the the compilation system to handle variable argument 41*0Sstevel@tonic-gate * lists and stack allocations. The method to obtain this in SunOS 42*0Sstevel@tonic-gate * is to define the feature test macro "__BUILTIN_VA_ARG_INCR" which 43*0Sstevel@tonic-gate * enables the following special built-in functions: 44*0Sstevel@tonic-gate * __builtin_alloca 45*0Sstevel@tonic-gate * __builtin_va_alist 46*0Sstevel@tonic-gate * __builtin_va_arg_incr 47*0Sstevel@tonic-gate * It is intended that the compilation system define this feature test 48*0Sstevel@tonic-gate * macro, not the user of the system. 49*0Sstevel@tonic-gate * 50*0Sstevel@tonic-gate * The tests on the processor type are to provide a transitional period 51*0Sstevel@tonic-gate * for existing compilation systems, and may be removed in a future 52*0Sstevel@tonic-gate * release. 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate #if defined(__BUILTIN_VA_ARG_INCR) || \ 56*0Sstevel@tonic-gate defined(__sparc) || defined(__i386) || defined(__amd64) 57*0Sstevel@tonic-gate #define alloca(x) __builtin_alloca(x) 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #ifdef __STDC__ 60*0Sstevel@tonic-gate extern void *__builtin_alloca(size_t); 61*0Sstevel@tonic-gate #else 62*0Sstevel@tonic-gate extern void *__builtin_alloca(); 63*0Sstevel@tonic-gate #endif 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate #else 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate #ifdef __STDC__ 68*0Sstevel@tonic-gate extern void *alloca(size_t); 69*0Sstevel@tonic-gate #else 70*0Sstevel@tonic-gate extern void *alloca(); 71*0Sstevel@tonic-gate #endif 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate #endif /* defined(__BUILTIN_VA_ARG_INCR) || defined(__sparc) ... */ 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate #ifdef __cplusplus 76*0Sstevel@tonic-gate } 77*0Sstevel@tonic-gate #endif 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate #endif /* _ALLOCA_H */ 80