From: Richard Miller <9fans@hamnavoe.com>
To: 9fans@9fans.net
Subject: [9fans] arm breakpoints
Date: Sun, 6 Jan 2013 15:02:57 +0000 [thread overview]
Message-ID: <20d785988fd83e4ec3210d7035d8d0c1@hamnavoe.com> (raw)
I had a surprise when I tried to debug a user process on the raspberry pi.
The first time it hit a breakpoint, the kernel panicked. Oops.
It turns out than on armv6 (and armv7, I think) the breakpoint instruction
causes a Prefetch Abort exception, instead of Undefined Instruction as on
previous arm architectures.
I've updated the rpi kernel source to deal with this. I wonder if
somebody with plan 9 on an armv7 system (omap or teg2) could check
whether the same panic occurs there too?
next reply other threads:[~2013-01-06 15:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-06 15:02 Richard Miller [this message]
2013-01-06 22:28 ` David du Colombier
2013-01-07 10:43 ` Richard Miller
2013-01-07 19:05 ` David du Colombier
2013-01-08 11:04 ` Richard Miller
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