diff options
Diffstat (limited to 'winsup/cygwin/miscfuncs.cc')
| -rw-r--r-- | winsup/cygwin/miscfuncs.cc | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/winsup/cygwin/miscfuncs.cc b/winsup/cygwin/miscfuncs.cc index e6ea5cc2d..7f324b946 100644 --- a/winsup/cygwin/miscfuncs.cc +++ b/winsup/cygwin/miscfuncs.cc @@ -1,7 +1,7 @@ /* miscfuncs.cc: misc funcs that don't belong anywhere else Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, - 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Red Hat, Inc. + 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Red Hat, Inc. This file is part of Cygwin. @@ -534,6 +534,19 @@ __import_address (void *imp) return NULL; } +/* Helper function to generate the correct caller address. For external + calls, the return address on the stack is _sigbe. In that case the + actual caller return address is on the cygtls stack. Use this function + via the macro caller_return_address. */ +extern "C" void _sigbe (); + +void * +__caller_return_address (void *builtin_ret_addr) +{ + return builtin_ret_addr == &_sigbe + ? (void *) _my_tls.retaddr () : builtin_ret_addr; +} + /* CygwinCreateThread. Replacement function for CreateThread. What we do here is to remove |