+/* NOTE: In order to be able to support SVR4 shared libraries, we arrange
+ to have one set of symbols { __CTOR_LIST__, __DTOR_LIST__, __CTOR_END__,
+ __DTOR_END__ } per root executable and also one set of these symbols
+ per shared library. So in any given whole process image, we may have
+ multiple definitions of each of these symbols. In order to prevent
+ these definitions from conflicting with one another, and in order to
+ ensure that the proper lists are used for the initialization/finalization
+ of each individual shared library (respectively), we give these symbols
+ only internal (i.e. `static') linkage, and we also make it a point to
+ refer to only the __CTOR_END__ symbol in crtend.o and the __DTOR_LIST__
+ symbol in crtbegin.o, where they are defined. */
+
+/* The -1 is a flag to __do_global_[cd]tors indicating that this table
+ does not start with a count of elements. */
+#ifdef CTOR_LIST_BEGIN
+CTOR_LIST_BEGIN;
+#elif defined(CTORS_SECTION_ASM_OP)
+/* Hack: force cc1 to switch to .data section early, so that assembling
+ __CTOR_LIST__ does not undo our behind-the-back change to .ctors. */
+static func_ptr force_to_data[1] __attribute__ ((__unused__)) = { };
+asm (CTORS_SECTION_ASM_OP);
+STATIC func_ptr __CTOR_LIST__[1]
+ __attribute__ ((__unused__, aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#else
+STATIC func_ptr __CTOR_LIST__[1]
+ __attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#endif /* __CTOR_LIST__ alternatives */
+
+#ifdef DTOR_LIST_BEGIN
+DTOR_LIST_BEGIN;
+#elif defined(DTORS_SECTION_ASM_OP)
+asm (DTORS_SECTION_ASM_OP);
+STATIC func_ptr __DTOR_LIST__[1]
+ __attribute__ ((aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#else
+STATIC func_ptr __DTOR_LIST__[1]
+ __attribute__((section(".dtors"), aligned(sizeof(func_ptr))))
+ = { (func_ptr) (-1) };
+#endif /* __DTOR_LIST__ alternatives */
+
+#ifdef USE_EH_FRAME_REGISTRY
+/* Stick a label at the beginning of the frame unwind info so we can register
+ and deregister it with the exception handling library code. */
+STATIC EH_FRAME_SECTION_CONST char __EH_FRAME_BEGIN__[]
+ __attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
+ = { };
+#endif /* USE_EH_FRAME_REGISTRY */
+
+#ifdef JCR_SECTION_NAME
+/* Stick a label at the beginning of the java class registration info
+ so we can register them properly. */
+STATIC void *__JCR_LIST__[]
+ __attribute__ ((unused, section(JCR_SECTION_NAME), aligned(sizeof(void*))))
+ = { };
+#endif /* JCR_SECTION_NAME */
+
+#if defined(INIT_SECTION_ASM_OP) || defined(INIT_ARRAY_SECTION_ASM_OP)
+
+#ifdef OBJECT_FORMAT_ELF
+
+/* Declare the __dso_handle variable. It should have a unique value
+ in every shared-object; in a main program its value is zero. The
+ object should in any case be protected. This means the instance
+ in one DSO or the main program is not used in another object. The
+ dynamic linker takes care of this. */
+
+#ifdef TARGET_LIBGCC_SDATA_SECTION
+extern void *__dso_handle __attribute__ ((__section__ (TARGET_LIBGCC_SDATA_SECTION)));
+#endif
+#ifdef HAVE_GAS_HIDDEN
+extern void *__dso_handle __attribute__ ((__visibility__ ("hidden")));
+#endif
+#ifdef CRTSTUFFS_O
+void *__dso_handle = &__dso_handle;
+#else
+void *__dso_handle = 0;
+#endif
+
+/* The __cxa_finalize function may not be available so we use only a
+ weak declaration. */
+extern void __cxa_finalize (void *) TARGET_ATTRIBUTE_WEAK;
+
+/* Run all the global destructors on exit from the program. */
+
+/* Some systems place the number of pointers in the first word of the
+ table. On SVR4 however, that word is -1. In all cases, the table is
+ null-terminated. On SVR4, we start from the beginning of the list and
+ invoke each per-compilation-unit destructor routine in order
+ until we find that null.
+
+ Note that this function MUST be static. There will be one of these
+ functions in each root executable and one in each shared library, but
+ although they all have the same code, each one is unique in that it
+ refers to one particular associated `__DTOR_LIST__' which belongs to the
+ same particular root executable or shared library file.
+
+ On some systems, this routine is run more than once from the .fini,
+ when exit is called recursively, so we arrange to remember where in
+ the list we left off processing, and we resume at that point,
+ should we be re-invoked. */
+
+static void __attribute__((used))
+__do_global_dtors_aux (void)
+{
+#ifndef FINI_ARRAY_SECTION_ASM_OP
+ static func_ptr *p = __DTOR_LIST__ + 1;
+ func_ptr f;
+#endif /* !defined(FINI_ARRAY_SECTION_ASM_OP) */
+ static _Bool completed;
+
+ if (__builtin_expect (completed, 0))
+ return;
+
+#ifdef CRTSTUFFS_O
+ if (__cxa_finalize)
+ __cxa_finalize (__dso_handle);
+#endif
+
+#ifdef FINI_ARRAY_SECTION_ASM_OP
+ /* If we are using .fini_array then destructors will be run via that
+ mechanism. */
+#else /* !defined (FINI_ARRAY_SECTION_ASM_OP) */
+ while ((f = *p))
+ {
+ p++;
+ f ();
+ }
+#endif /* !defined(FINI_ARRAY_SECTION_ASM_OP) */
+
+#ifdef USE_EH_FRAME_REGISTRY
+#ifdef CRT_GET_RFIB_DATA
+ /* If we used the new __register_frame_info_bases interface,
+ make sure that we deregister from the same place. */
+ if (__deregister_frame_info_bases)
+ __deregister_frame_info_bases (__EH_FRAME_BEGIN__);
+#else
+ if (__deregister_frame_info)
+ __deregister_frame_info (__EH_FRAME_BEGIN__);
+#endif
+#endif
+
+ completed = 1;
+}
+
+/* Stick a call to __do_global_dtors_aux into the .fini section. */
+#ifdef FINI_SECTION_ASM_OP
+CRT_CALL_STATIC_FUNCTION (FINI_SECTION_ASM_OP, __do_global_dtors_aux)
+#else /* !defined(FINI_SECTION_ASM_OP) */
+static func_ptr __do_global_dtors_aux_fini_array_entry[]
+ __attribute__ ((__unused__, section(".fini_array")))
+ = { __do_global_dtors_aux };
+#endif /* !defined(FINI_SECTION_ASM_OP) */
+
+#if defined(USE_EH_FRAME_REGISTRY) || defined(JCR_SECTION_NAME)
+/* Stick a call to __register_frame_info into the .init section. For some
+ reason calls with no arguments work more reliably in .init, so stick the
+ call in another function. */
+
+static void __attribute__((used))
+frame_dummy (void)
+{
+#ifdef USE_EH_FRAME_REGISTRY
+ static struct object object;
+#ifdef CRT_GET_RFIB_DATA
+ void *tbase, *dbase;
+ tbase = 0;
+ CRT_GET_RFIB_DATA (dbase);
+ if (__register_frame_info_bases)
+ __register_frame_info_bases (__EH_FRAME_BEGIN__, &object, tbase, dbase);
+#else
+ if (__register_frame_info)
+ __register_frame_info (__EH_FRAME_BEGIN__, &object);
+#endif /* CRT_GET_RFIB_DATA */
+#endif /* USE_EH_FRAME_REGISTRY */
+#ifdef JCR_SECTION_NAME
+ if (__JCR_LIST__[0])
+ {
+ void (*register_classes) (void *) = _Jv_RegisterClasses;
+ __asm ("" : "+r" (register_classes));
+ if (register_classes)
+ register_classes (__JCR_LIST__);
+ }
+#endif /* JCR_SECTION_NAME */
+}
+
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