| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License, Version 1.0 only |
| * (the "License"). You may not use this file except in compliance |
| * with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| /* |
| * Copyright 2014 Garrett D'Amore <garrett@damore.org> |
| * |
| * Copyright 2004 Sun Microsystems, Inc. All rights reserved. |
| * Use is subject to license terms. |
| */ |
| |
| #ifndef _ALLOCA_H |
| #define _ALLOCA_H |
| |
| #include <sys/types.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * Many compilation systems depend upon the use of special functions |
| * built into the the compilation system to handle variable argument |
| * lists and stack allocations. The method to obtain this in SunOS |
| * is to define the feature test macro "__BUILTIN_VA_ARG_INCR" which |
| * enables the following special built-in functions: |
| * __builtin_alloca |
| * __builtin_va_alist |
| * __builtin_va_arg_incr |
| * It is intended that the compilation system define this feature test |
| * macro, not the user of the system. |
| * |
| * The tests on the processor type are to provide a transitional period |
| * for existing compilation systems, and may be removed in a future |
| * release. |
| */ |
| |
| #if defined(__BUILTIN_VA_ARG_INCR) || \ |
| defined(__sparc) || defined(__i386) || defined(__amd64) |
| #define alloca(x) __builtin_alloca(x) |
| |
| extern void *__builtin_alloca(size_t); |
| |
| #else |
| |
| extern void *alloca(size_t); |
| |
| #endif /* defined(__BUILTIN_VA_ARG_INCR) || defined(__sparc) ... */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ALLOCA_H */ |