| 1 | /** @file
|
|---|
| 2 | * IPRT - alloca().
|
|---|
| 3 | */
|
|---|
| 4 |
|
|---|
| 5 | /*
|
|---|
| 6 | * Copyright (C) 2006-2022 Oracle Corporation
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 9 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 10 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 11 | * General Public License (GPL) as published by the Free Software
|
|---|
| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 15 | *
|
|---|
| 16 | * The contents of this file may alternatively be used under the terms
|
|---|
| 17 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 19 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 20 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 21 | *
|
|---|
| 22 | * You may elect to license modified versions of this file under the
|
|---|
| 23 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 24 | */
|
|---|
| 25 |
|
|---|
| 26 | #ifndef IPRT_INCLUDED_alloca_h
|
|---|
| 27 | #define IPRT_INCLUDED_alloca_h
|
|---|
| 28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 29 | # pragma once
|
|---|
| 30 | #endif
|
|---|
| 31 |
|
|---|
| 32 | #if defined(IN_RC) || defined(IN_RING0_AGNOSTIC)
|
|---|
| 33 | # error "No alloca() in raw-mode and agnostic ring-0 context as it may have external dependencies like libgcc."
|
|---|
| 34 | #endif
|
|---|
| 35 |
|
|---|
| 36 | /*
|
|---|
| 37 | * If there are more difficult platforms out there, we'll do OS
|
|---|
| 38 | * specific #ifdefs. But for now we'll just include the headers
|
|---|
| 39 | * which normally contains the alloca() prototype.
|
|---|
| 40 | * When we're in kernel territory it starts getting a bit more
|
|---|
| 41 | * interesting of course...
|
|---|
| 42 | */
|
|---|
| 43 | #if defined(IN_RING0) \
|
|---|
| 44 | && ( defined(RT_OS_DARWIN) \
|
|---|
| 45 | || defined(RT_OS_FREEBSD) \
|
|---|
| 46 | || defined(RT_OS_LINUX) \
|
|---|
| 47 | || defined(RT_OS_NETBSD) \
|
|---|
| 48 | || defined(RT_OS_SOLARIS))
|
|---|
| 49 | /* ASSUMES GNU C */
|
|---|
| 50 | # define alloca(cb) __builtin_alloca(cb)
|
|---|
| 51 |
|
|---|
| 52 | #else
|
|---|
| 53 | # include <stdlib.h>
|
|---|
| 54 | # if !defined(RT_OS_DARWIN) && !defined(RT_OS_FREEBSD) && !defined(RT_OS_NETBSD)
|
|---|
| 55 | # include <malloc.h>
|
|---|
| 56 | # endif
|
|---|
| 57 | # if defined(RT_OS_SOLARIS) || defined(RT_OS_LINUX)
|
|---|
| 58 | # include <alloca.h>
|
|---|
| 59 | # endif
|
|---|
| 60 | #endif
|
|---|
| 61 |
|
|---|
| 62 | #endif /* !IPRT_INCLUDED_alloca_h */
|
|---|
| 63 |
|
|---|
