mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-30 17:27:54 +01:00
115 lines
3.4 KiB
C++
Executable File
115 lines
3.4 KiB
C++
Executable File
#include <Platform/Platform.h>
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#if 0
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#define DBG(...) DebugLog(2, __VA_ARGS__)
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#else
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#define DBG(...)
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#endif
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#if defined(__clang__)
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typedef void (destructor_func_t)();
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#elif defined(__GNUC__)
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typedef void (destructor_func_t)(void*);
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#elif defined(_MSC_VER)
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typedef void (__cdecl destructor_func_t)(void);
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extern "C" int _fltused = 0; // it should be a single underscore since the double one is the mangled name
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#else
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# error compiler not supported
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#endif
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typedef destructor_func_t* destructor_func_ptr_t;
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struct atexit_func_entry_t
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{
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destructor_func_ptr_t destructor_func;
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#if !defined(__clang__) && defined(__GNUC__)
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void *obj_ptr;
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void *dso_handle;
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#endif
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};
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static atexit_func_entry_t*atexit_func_entry_array = NULL;
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static UINTN atexit_func_entry_count = 0;
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static UINTN atexit_func_entry_size = 0;
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#if defined (__clang__)
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extern "C" int atexit(destructor_func_ptr_t destructor_func)
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{
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DBG("atexit(%p) sizeof=%d\n", destructor_func, sizeof(atexit_func_entry_t));
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#elif defined(__GNUC__)
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extern "C" int __cxa_atexit(destructor_func_ptr_t destructor_func, void *objptr, void *dso)
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{
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DBG("atexit(%p, %p, %p, %d)\n", destructor_func, objptr, dso, sizeof(atexit_func_entry_t));
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#elif defined(_MSC_VER)
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extern "C" int atexit(void(__cdecl *)(void));
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extern "C" int atexit(void(__cdecl *destructor_func)(void))
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{
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DBG("atexit(%p, %p, %p, %d)\n", destructor_func, objptr, dso, sizeof(atexit_func_entry_t));
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#endif
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if ( !atexit_func_entry_array )
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{
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DBG("atexit : allocate\n");
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atexit_func_entry_array = (atexit_func_entry_t*)AllocatePool(16*sizeof(atexit_func_entry_t));
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if ( !atexit_func_entry_array ) {
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DBG("atexit : allocate returned NULL\n");
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CpuDeadLoop();
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}
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atexit_func_entry_count = 0;
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atexit_func_entry_size = 16;
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}
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if (atexit_func_entry_count >= atexit_func_entry_size)
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{
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DBG("atexit : reallocate atexit_func_entry_array=%d\n", (UINTN)atexit_func_entry_array);
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atexit_func_entry_array = (atexit_func_entry_t *)ReallocatePool(atexit_func_entry_size*sizeof(atexit_func_entry_t), (atexit_func_entry_size+16)*sizeof(atexit_func_entry_t), atexit_func_entry_array);
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if ( !atexit_func_entry_array ) {
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DBG("atexit : reallocate returned NULL\n");
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CpuDeadLoop();
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}
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atexit_func_entry_size += 16;
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}
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atexit_func_entry_array[atexit_func_entry_count].destructor_func = destructor_func;
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#if !defined(__clang__) && defined(__GNUC__)
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atexit_func_entry_array[atexit_func_entry_count].obj_ptr = objptr;
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atexit_func_entry_array[atexit_func_entry_count].dso_handle = dso;
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#endif
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atexit_func_entry_count++;
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DBG("atexit : exit (atexit_func_entry_count=%d)\n", atexit_func_entry_count);
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return 0; /*I would prefer if functions returned 1 on success, but the ABI says...*/
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}
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void destruct_globals_objects(void *f)
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{
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UINTN i = atexit_func_entry_count;
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while (i--)
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{
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# if defined(__clang__)
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DBG("destruct_globals_objects: idx=%d %p\n", i, atexit_func_entry_array[i].destructor_func);
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(*atexit_func_entry_array[i].destructor_func)();
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atexit_func_entry_array[i].destructor_func = NULL;
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atexit_func_entry_count--;
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# elif defined(__GNUC__)
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DBG("destruct_globals_objects: idx=%d %d, %p, %p\n", i, atexit_func_entry_array[i].destructor_func, atexit_func_entry_array[i].obj_ptr, atexit_func_entry_array[i].dso_handle);
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(*atexit_func_entry_array[i].destructor_func)(atexit_func_entry_array[i].obj_ptr);
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atexit_func_entry_array[i].destructor_func = NULL;
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atexit_func_entry_count--;
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# endif
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}
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}
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