Graf Yang 01b9f4b0ed Blackfin: improve double fault debug handling ... Since the hardware only provides reporting for the last exception handled, and the values are valid only when executing the exception handler, we need to save the context for reporting at a later point. While we do this for one exception, it doesn't work properly when handling a second one as the original exception is clobbered by the double fault. So when double fault debugging is enabled, create a dedicated shadow of these values and save/restore out of there. Now the crash report properly displays the first exception as well as the second one. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>		2009-09-16 21:31:57 -04:00
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asm	Blackfin: improve double fault debug handling	2009-09-16 21:31:57 -04:00