1 /*- 2 * Copyright (c) 2013 The NetBSD Foundation, Inc. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to The NetBSD Foundation 6 * by Matt Thomas of 3am Software Foundry. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #include <sys/cdefs.h> 30 __RCSID("$NetBSD: crtbegin.c,v 1.12 2016/06/07 12:07:35 joerg Exp $"); 31 32 #include "crtbegin.h" 33 34 typedef void (*fptr_t)(void); 35 36 __dso_hidden const fptr_t __JCR_LIST__[0] __section(".jcr"); 37 38 __weakref_visible void Jv_RegisterClasses(const fptr_t *) 39 __weak_reference(_Jv_RegisterClasses); 40 41 #if !defined(HAVE_INITFINI_ARRAY) 42 __weakref_visible const fptr_t __CTOR_LIST__start 43 __weak_reference(__CTOR_LIST__); 44 45 __dso_hidden const fptr_t __aligned(sizeof(void *)) __CTOR_LIST__[] __section(".ctors") = { 46 (fptr_t) -1, 47 }; 48 __dso_hidden extern const fptr_t __CTOR_LIST_END__[]; 49 #endif 50 51 #ifdef SHARED 52 __dso_hidden void *__dso_handle = &__dso_handle; 53 54 __weakref_visible void cxa_finalize(void *) 55 __weak_reference(__cxa_finalize); 56 #else 57 __dso_hidden void *__dso_handle; 58 #endif 59 60 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 61 __dso_hidden 62 #if !defined(__mips__) 63 const 64 #endif 65 long __EH_FRAME_LIST__[0] __section(".eh_frame"); 66 67 __weakref_visible void register_frame_info(const void *, const void *) 68 __weak_reference(__register_frame_info); 69 __weakref_visible void deregister_frame_info(const void *) 70 __weak_reference(__deregister_frame_info); 71 72 static long dwarf_eh_object[8]; 73 #endif 74 75 static void __do_global_ctors_aux(void) __used; 76 77 static void __section(".text.startup") 78 __do_global_ctors_aux(void) 79 { 80 static unsigned char __initialized; 81 82 if (__initialized) 83 return; 84 85 __initialized = 1; 86 87 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 88 if (register_frame_info) 89 register_frame_info(__EH_FRAME_LIST__, &dwarf_eh_object); 90 #endif 91 92 if (Jv_RegisterClasses && __JCR_LIST__[0] != 0) 93 Jv_RegisterClasses(__JCR_LIST__); 94 95 #if !defined(HAVE_INITFINI_ARRAY) 96 for (const fptr_t *p = __CTOR_LIST_END__; p > &__CTOR_LIST__start + 1; ) { 97 (*(*--p))(); 98 } 99 #endif 100 } 101 102 #if !defined(__ARM_EABI__) || defined(SHARED) || defined(__ARM_DWARF_EH__) 103 #if !defined(HAVE_INITFINI_ARRAY) 104 __weakref_visible const fptr_t __DTOR_LIST__start 105 __weak_reference(__DTOR_LIST__); 106 107 __dso_hidden const fptr_t __aligned(sizeof(void *)) __DTOR_LIST__[] __section(".dtors") = { 108 (fptr_t) -1, 109 }; 110 __dso_hidden extern const fptr_t __DTOR_LIST_END__[]; 111 #endif 112 113 static void __do_global_dtors_aux(void) __used; 114 115 static void __section(".text.exit") 116 __do_global_dtors_aux(void) 117 { 118 static unsigned char __finished; 119 120 if (__finished) 121 return; 122 123 __finished = 1; 124 125 #ifdef SHARED 126 if (cxa_finalize) 127 (*cxa_finalize)(__dso_handle); 128 #endif 129 130 #if !defined(HAVE_INITFINI_ARRAY) 131 for (const fptr_t *p = &__DTOR_LIST__start + 1; p < __DTOR_LIST_END__; ) { 132 (*(*p++))(); 133 } 134 #endif 135 136 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 137 if (deregister_frame_info) 138 deregister_frame_info(__EH_FRAME_LIST__); 139 #endif 140 } 141 #endif /* !__ARM_EABI__ || SHARED || __ARM_DWARF_EH__ */ 142