1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2015, Linaro Limited 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef KEEP_H 29 #define KEEP_H 30 31 #ifdef ASM 32 33 .macro KEEP_PAGER sym 34 .pushsection __keep_meta_vars_pager 35 .global ____keep_pager_\sym 36 ____keep_pager_\sym: 37 .long \sym 38 .popsection 39 .endm 40 41 .macro KEEP_INIT sym 42 .pushsection __keep_meta_vars_init 43 .global ____keep_init_\sym 44 ____keep_init_\sym: 45 .long \sym 46 .popsection 47 .endm 48 49 #else 50 51 #include <compiler.h> 52 53 #define KEEP_PAGER(sym) \ 54 extern const unsigned long ____keep_pager_##sym; \ 55 const unsigned long ____keep_pager_##sym \ 56 __section("__keep_meta_vars_pager") = (unsigned long)&sym 57 58 #define KEEP_INIT(sym) \ 59 extern const unsigned long ____keep_init_##sym; \ 60 const unsigned long ____keep_init_##sym \ 61 __section("__keep_meta_vars_init") = (unsigned long)&sym 62 63 #endif /* ASM */ 64 65 #endif /*KEEP_H*/ 66