[libc][uefi] drop mingw compat in crt0

Author: RossComputerGuy

libc/startup/uefi/crt1.cpp

@@ -12,39 +12,6 @@
 #include "include/llvm-libc-types/EFI_SYSTEM_TABLE.h"
 #include "src/__support/macros/config.h"
 
-namespace LIBC_NAMESPACE_DECL {
-
-using InitCallback = void(void);
-using FiniCallback = void(void);
-extern "C" InitCallback *__CTOR_LIST__[];
-extern "C" FiniCallback *__DTOR_LIST__[];
-
-static void call_init_array_callbacks() {
-  unsigned long nptrs = (unsigned long)__CTOR_LIST__[0];
-  unsigned long i;
-
-  if (nptrs == ~0ul) {
-    for (nptrs = 0; __CTOR_LIST__[nptrs + 1] != 0; nptrs++)
-      ;
-  }
-
-  for (i = nptrs; i >= 1; i--) {
-    __CTOR_LIST__[i]();
-  }
-}
-
-static void call_fini_array_callbacks() {
-  unsigned long nptrs = 0;
-
-  for (nptrs = 0; __DTOR_LIST__[nptrs + 1] != 0; nptrs++)
-    ;
-
-  for (unsigned long i = nptrs; i >= 1; i--) {
-    __DTOR_LIST__[i]();
-  }
-}
-} // namespace LIBC_NAMESPACE_DECL
-
 EFI_HANDLE efi_image_handle;
 EFI_SYSTEM_TABLE *efi_system_table;
 
@@ -55,11 +22,8 @@ extern "C" EFI_STATUS EfiMain(EFI_HANDLE ImageHandle,
   efi_image_handle = ImageHandle;
   efi_system_table = SystemTable;
 
-  LIBC_NAMESPACE::call_init_array_callbacks();
-
   main(0, NULL, NULL);
 
-  LIBC_NAMESPACE::call_fini_array_callbacks();
   // TODO: convert the return value of main to EFI_STATUS
   return 0; // TODO: EFI_SUCCESS
 }