17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 23*ba3594baSGarrett D'Amore * Copyright 2014 Garrett D'Amore <garrett@damore.org> 24*ba3594baSGarrett D'Amore * 257c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 267c478bd9Sstevel@tonic-gate * Use is subject to license terms. 277c478bd9Sstevel@tonic-gate */ 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #ifndef _ALLOCA_H 307c478bd9Sstevel@tonic-gate #define _ALLOCA_H 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include <sys/types.h> 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #ifdef __cplusplus 357c478bd9Sstevel@tonic-gate extern "C" { 367c478bd9Sstevel@tonic-gate #endif 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate /* 397c478bd9Sstevel@tonic-gate * Many compilation systems depend upon the use of special functions 407c478bd9Sstevel@tonic-gate * built into the the compilation system to handle variable argument 417c478bd9Sstevel@tonic-gate * lists and stack allocations. The method to obtain this in SunOS 427c478bd9Sstevel@tonic-gate * is to define the feature test macro "__BUILTIN_VA_ARG_INCR" which 437c478bd9Sstevel@tonic-gate * enables the following special built-in functions: 447c478bd9Sstevel@tonic-gate * __builtin_alloca 457c478bd9Sstevel@tonic-gate * __builtin_va_alist 467c478bd9Sstevel@tonic-gate * __builtin_va_arg_incr 477c478bd9Sstevel@tonic-gate * It is intended that the compilation system define this feature test 487c478bd9Sstevel@tonic-gate * macro, not the user of the system. 497c478bd9Sstevel@tonic-gate * 507c478bd9Sstevel@tonic-gate * The tests on the processor type are to provide a transitional period 517c478bd9Sstevel@tonic-gate * for existing compilation systems, and may be removed in a future 527c478bd9Sstevel@tonic-gate * release. 537c478bd9Sstevel@tonic-gate */ 547c478bd9Sstevel@tonic-gate 557c478bd9Sstevel@tonic-gate #if defined(__BUILTIN_VA_ARG_INCR) || \ 567c478bd9Sstevel@tonic-gate defined(__sparc) || defined(__i386) || defined(__amd64) 577c478bd9Sstevel@tonic-gate #define alloca(x) __builtin_alloca(x) 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate extern void *__builtin_alloca(size_t); 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate #else 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate extern void *alloca(size_t); 647c478bd9Sstevel@tonic-gate 657c478bd9Sstevel@tonic-gate #endif /* defined(__BUILTIN_VA_ARG_INCR) || defined(__sparc) ... */ 667c478bd9Sstevel@tonic-gate 677c478bd9Sstevel@tonic-gate #ifdef __cplusplus 687c478bd9Sstevel@tonic-gate } 697c478bd9Sstevel@tonic-gate #endif 707c478bd9Sstevel@tonic-gate 717c478bd9Sstevel@tonic-gate #endif /* _ALLOCA_H */ 72