/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the * License may not be used to create, or enable the creation or * redistribution of, unlawful or unlicensed copies of an Apple operating * system, or to circumvent, violate, or enable the circumvention or * violation of, any terms of an Apple operating system software license * agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ */ /*- * Copyright (c) 1999 John D. Polstra * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #ifndef _SYS_LINKER_SET_H_ #define _SYS_LINKER_SET_H_ #include <sys/appleapiopts.h> #if !defined(KERNEL) || defined(__APPLE_API_PRIVATE) /* * The following macros are used to declare global sets of objects, which * are collected by the linker into a `struct linker_set' as defined below. * For ELF, this is done by constructing a separate segment for each set. * For a.out, it is done automatically by the linker. */ #define __ELF__ #ifdef __ELF__ #define MAKE_SET(seg, set, sym) \ static void const * const __set_##set##_sym_##sym = &sym; \ __asm(".section seg, " #set ""); \ __asm(".long " #sym); /* __asm(".previous") */ #define TEXT_SET(set, sym) MAKE_SET(__TEXT, set, sym) #define DATA_SET(set, sym) MAKE_SET(__DATA, set, sym) #define BSS_SET(set, sym) MAKE_SET(__BSS, set, sym) #define ABS_SET(set, sym) MAKE_SET(__ABS, set, sym) #else /* * NB: the constants defined below must match those defined in * nlist.h. Since their calculation requires arithmetic, we * can't name them symbolically (e.g., 7 is N_DATA | N_EXT). */ #define MAKE_SET(set, sym, type) \ static void const * const __set_##set##_sym_##sym = &sym; \ __asm(".stabs \"_" #set "\", " #type ", 0, 0, _" #sym) #define TEXT_SET(set, sym) MAKE_SET(set, sym, 5) #define DATA_SET(set, sym) MAKE_SET(set, sym, 7) #define BSS_SET(set, sym) MAKE_SET(set, sym, 9) #define ABS_SET(set, sym) MAKE_SET(set, sym, 3) #endif struct linker_set { int ls_length; const void *ls_items[1]; /* really ls_length of them, * trailing NULL */ }; #endif /* !KERNEL || __APPLE_API_PRIVATE */ #endif /* _SYS_LINKER_SET_H_ */