Rework the DDB trace handling for armv7. By switching to clang the
authorpatrick <patrick@openbsd.org>
Sun, 11 Feb 2018 21:04:13 +0000 (21:04 +0000)
committerpatrick <patrick@openbsd.org>
Sun, 11 Feb 2018 21:04:13 +0000 (21:04 +0000)
commit3c3a881b378f7538ffa8e11488dee934cf9cd4d0
tree3c2f8501dd5076a80a28380e4c644c35aa534db3
parent471f033c317b40601f83e748cf82fe6fdb8bc770
Rework the DDB trace handling for armv7.  By switching to clang the
stack frame format has changed.  Apparently AAPCS doesn't specify
at all what a stack frame looks like.  We end up with much simpler
code, but also with a lot less information in the trace.

ok kettenis@
sys/arch/arm/arm/db_trace.c