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 1.13 2016/06/29 11:16:47 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 extern __dso_hidden const fptr_t __CTOR_LIST__start __asm("__CTOR_LIST__"); 43 44 __dso_hidden const fptr_t __aligned(sizeof(void *)) __CTOR_LIST__[] __section(".ctors") = { 45 (fptr_t) -1, 46 }; 47 __dso_hidden extern const fptr_t __CTOR_LIST_END__[]; 48 #endif 49 50 #ifdef SHARED 51 __dso_hidden void *__dso_handle = &__dso_handle; 52 53 __weakref_visible void cxa_finalize(void *) 54 __weak_reference(__cxa_finalize); 55 #else 56 __dso_hidden void *__dso_handle; 57 #endif 58 59 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 60 __dso_hidden 61 #if !defined(__mips__) 62 const 63 #endif 64 long __EH_FRAME_LIST__[0] __section(".eh_frame"); 65 66 __weakref_visible void register_frame_info(const void *, const void *) 67 __weak_reference(__register_frame_info); 68 __weakref_visible void deregister_frame_info(const void *) 69 __weak_reference(__deregister_frame_info); 70 71 static long dwarf_eh_object[8]; 72 #endif 73 74 static void __do_global_ctors_aux(void) __used; 75 76 static void __section(".text.startup") 77 __do_global_ctors_aux(void) 78 { 79 static unsigned char __initialized; 80 81 if (__initialized) 82 return; 83 84 __initialized = 1; 85 86 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 87 if (register_frame_info) 88 register_frame_info(__EH_FRAME_LIST__, &dwarf_eh_object); 89 #endif 90 91 if (Jv_RegisterClasses && __JCR_LIST__[0] != 0) 92 Jv_RegisterClasses(__JCR_LIST__); 93 94 #if !defined(HAVE_INITFINI_ARRAY) 95 for (const fptr_t *p = __CTOR_LIST_END__; p > &__CTOR_LIST__start + 1; ) { 96 (*(*--p))(); 97 } 98 #endif 99 } 100 101 #if !defined(__ARM_EABI__) || defined(SHARED) || defined(__ARM_DWARF_EH__) 102 #if !defined(HAVE_INITFINI_ARRAY) 103 extern __dso_hidden const fptr_t __DTOR_LIST__start __asm("__DTOR_LIST__"); 104 105 __dso_hidden const fptr_t __aligned(sizeof(void *)) __DTOR_LIST__[] __section(".dtors") = { 106 (fptr_t) -1, 107 }; 108 __dso_hidden extern const fptr_t __DTOR_LIST_END__[]; 109 #endif 110 111 static void __do_global_dtors_aux(void) __used; 112 113 static void __section(".text.exit") 114 __do_global_dtors_aux(void) 115 { 116 static unsigned char __finished; 117 118 if (__finished) 119 return; 120 121 __finished = 1; 122 123 #ifdef SHARED 124 if (cxa_finalize) 125 (*cxa_finalize)(__dso_handle); 126 #endif 127 128 #if !defined(HAVE_INITFINI_ARRAY) 129 for (const fptr_t *p = &__DTOR_LIST__start + 1; p < __DTOR_LIST_END__; ) { 130 (*(*p++))(); 131 } 132 #endif 133 134 #if !defined(__ARM_EABI__) || defined(__ARM_DWARF_EH__) 135 if (deregister_frame_info) 136 deregister_frame_info(__EH_FRAME_LIST__); 137 #endif 138 } 139 #endif /* !__ARM_EABI__ || SHARED || __ARM_DWARF_EH__ */ 140