typedef struct { unsigned nargs; } ffi_cif; typedef struct { char tramp[24]; ffi_cif *cif; } ffi_closure; extern void *memcpy (void *, const void *, __SIZE_TYPE__); extern void ffi_closure_LINUX64 (void); int ffi_prep_closure_loc (ffi_closure *closure, ffi_cif *cif) { void **tramp = (void **) &closure->tramp[0]; memcpy (tramp, (char *) ffi_closure_LINUX64, 16); closure->cif = cif; return 0; }