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-rw-r--r--runtime/GCCLibraries/crtend/crtend.c59
1 files changed, 2 insertions, 57 deletions
diff --git a/runtime/GCCLibraries/crtend/crtend.c b/runtime/GCCLibraries/crtend/crtend.c
index 74e7831dee..561b6fd241 100644
--- a/runtime/GCCLibraries/crtend/crtend.c
+++ b/runtime/GCCLibraries/crtend/crtend.c
@@ -7,65 +7,10 @@
*
*===----------------------------------------------------------------------===*
*
- * This file defines the __main function, which is used to run static
- * constructors and destructors in C++ programs, or with C programs that use GCC
- * extensions to accomplish the same effect.
- *
- * The main data structures used to implement this functionality is the
- * llvm.global_ctors and llvm.global_dtors lists, which are null terminated
- * lists of TorRec (defined below) structures.
+ * This file defines the __main function, which we preserve for backwards
+ * compatibility.
*
\*===----------------------------------------------------------------------===*/
-#include <stdlib.h>
-
-/* TorRec - The record type for each element of the ctor/dtor list */
-typedef struct TorRec {
- int Priority;
- void (*FP)(void);
-} TorRec;
-
-/* __llvm_getGlobalCtors, __llvm_getGlobalDtors - Interface to the LLVM
- * listend.ll file to get access to the start of the ctor and dtor lists...
- */
-TorRec *__llvm_getGlobalCtors(void);
-TorRec *__llvm_getGlobalDtors(void);
-
-static void run_destructors(void);
-
-/* __main - A call to this function is automatically inserted into the top of
- * the "main" function in the program compiled. This function is responsible
- * for calling static constructors before the program starts executing.
- */
void __main(void) {
- /* Loop over all of the constructor records, calling each function pointer. */
- TorRec *R = __llvm_getGlobalCtors();
-
- /* Recursively calling main is not legal C, but lots of people do it for
- * testing stuff. We might as well work for them.
- */
- static _Bool Initialized = 0;
- if (Initialized) return;
- Initialized = 1;
-
- /* Only register the global dtor handler if there is at least one global
- * dtor!
- */
- if (__llvm_getGlobalDtors()[0].FP)
- if (atexit(run_destructors))
- abort(); /* Should be able to install ONE atexit handler! */
-
- /* FIXME: This should sort the list by priority! */
- if (R->FP)
- for (; R->FP; ++R)
- R->FP();
-}
-
-static void run_destructors(void) {
- /* Loop over all of the destructor records, calling each function pointer. */
- TorRec *R = __llvm_getGlobalDtors();
-
- /* FIXME: This should sort the list by priority! */
- for (; R->FP; ++R)
- R->FP();
}