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LibC: Rework constructor/destructor calling

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constructors are now called in _init_libc instead of crt0

destructors are now registered with atexit() instead of called manually
This commit is contained in:
Bananymous
2025-04-15 22:29:26 +03:00
parent 066ed7e4a1
commit cf59f89bfb
4 changed files with 46 additions and 37 deletions
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23
userspace/libraries/LibC/unistd.cpp
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@@ -16,12 +16,33 @@
#include <termios.h>
#include <unistd.h>
struct init_funcs_t
{
void (*func)();
void (**array_start)();
void (**array_end)();
};
extern "C" char** environ;
extern "C" void _init_libc(char** _environ)
extern "C" void _init_libc(char** environ, init_funcs_t init_funcs, init_funcs_t fini_funcs)
{
if (::environ == nullptr)
::environ = environ;
// call global constructors
if (init_funcs.func)
init_funcs.func();
const size_t init_array_count = init_funcs.array_end - init_funcs.array_start;
for (size_t i = 0; i < init_array_count; i++)
init_funcs.array_start[i]();
// register global destructors
const size_t fini_array_count = fini_funcs.array_end - fini_funcs.array_start;
for (size_t i = 0; i < fini_array_count; i++)
atexit(fini_funcs.array_start[i]);
if (fini_funcs.func)
atexit(fini_funcs.func);
}
void _exit(int status)