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Cortex-M3: report lockup, and recover
authorDavid Brownell <dbrownell@users.sourceforge.net>
Wed, 27 Jan 2010 21:47:48 +0000 (13:47 -0800)
committerDavid Brownell <dbrownell@users.sourceforge.net>
Wed, 27 Jan 2010 21:47:48 +0000 (13:47 -0800)
commit3172be80a3e14f4c8c3628a37db348c04fd60fc4
tree17920235e9f192ca945e3a024d7ef78f09a6564dtree | snapshot
parentd44f1aaeff45d26348826bdff07caf3d097eca15commit | diff
Cortex-M3: report lockup, and recover

ARMv7-M defines a "lockup" state that's entered in certain double
fault sequences which can't be recovered from without external help.
OpenOCD has previously ignored this.

Issue a diagnostic saying the chip has locked up, and force exit
from this state by halting the core.  It's not clear this is the
best way to handle lockup; but there should now be less confusion.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
src/target/cortex_m3.c diff | blob | history
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