From 4d67bb4936135c7089f1f6e7a1208c30af2c5ee9 Mon Sep 17 00:00:00 2001 From: Corinna Vinschen Date: Wed, 5 Nov 2014 09:48:00 +0000 Subject: * Makefile.in (NEW_FUNCTIONS): Add atexit to be not exported. * lib/atexit.c (atexit): New, statically linkable version of atexit. * dcrt0.cc (cygwin_atexit): Add comment to mark this function as old entry point. Indiscriminately check for DSO of function pointer for all functions, if checking for DSO of return address fails on x86_64. Change comment accordingly. --- winsup/cygwin/lib/atexit.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 winsup/cygwin/lib/atexit.c (limited to 'winsup/cygwin/lib/atexit.c') diff --git a/winsup/cygwin/lib/atexit.c b/winsup/cygwin/lib/atexit.c new file mode 100644 index 000000000..0b724771a --- /dev/null +++ b/winsup/cygwin/lib/atexit.c @@ -0,0 +1,23 @@ +/* atexit.c: atexit entry point + + Copyright 2014 Red Hat, Inc. + +This file is part of Cygwin. + +This software is a copyrighted work licensed under the terms of the +Cygwin license. Please consult the file "CYGWIN_LICENSE" for +details. */ + +#include + +/* Statically linked replacement for the former cygwin_atexit. We need + the function here to be able to access the correct __dso_handle of the + caller's DSO. */ +int +atexit (void (*fn) (void)) +{ + extern int __cxa_atexit(void (*)(void*), void*, void*); + extern void *__dso_handle; + + return __cxa_atexit ((void (*)(void*))fn, NULL, &__dso_handle); +} -- cgit v1.2.3