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* gendef: Export _sigbe on 64 bit as well.

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* malloc_wrapper.cc (free): In malloc_printf, call caller_return_address
	instead of __builtin_return_address.
	(malloc): Ditto.
	(realloc): Ditto.
	(calloc): Ditto.
	* miscfuncs.cc (__caller_return_address): New function.
	* miscfuncs.h (caller_return_address): New macro calling
	__caller_return_address.
	(__caller_return_address): Add prototype.
This commit is contained in:
Corinna Vinschen
2015-01-16 16:19:37 +00:00
parent ad45d512de
commit a62dbcd6e0
5 changed files with 44 additions and 9 deletions
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15
winsup/cygwin/miscfuncs.cc
View File

@ -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