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46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
#include "libc.h"
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/*! \brief Function pointer for initialization/finalization functions for global
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* objects required since GCC 4.7 and later.
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*
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* These symbols appear kind of magically due to the compiler
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*/
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extern void (*__preinit_array_start[])();
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extern void (*__preinit_array_end[])();
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extern void (*__init_array_start[])();
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extern void (*__init_array_end[])();
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extern void (*__fini_array_start[])();
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extern void (*__fini_array_end[])();
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namespace CSU {
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void initializer() {
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const unsigned int preinit_size = __preinit_array_end - __preinit_array_start;
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for (unsigned int i = 0; i != preinit_size; ++i) {
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(*__preinit_array_start[i])();
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}
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const size_t size = __init_array_end - __init_array_start;
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for (size_t i = 0; i < size; i++) {
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(*__init_array_start[i])();
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}
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}
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void finalizer() {
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const unsigned int fini_size = __fini_array_end - __fini_array_start;
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for (unsigned int i = 0; i != fini_size; ++i) {
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(*__fini_array_start[i])();
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}
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}
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} // namespace CSU
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extern "C" int atexit(void (*func)(void)) {
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// Registers a function that will be executed on exit.
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// We simply ignore those functions, as we don't need them for our operating
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// systems.
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(void)func;
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return 0;
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}
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