Blackfin: fix single stepping over system calls

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On Blackfin systems, the hardware single step exception triggers before
the system call exception, so we need to save this info to process it
later on.  Otherwise, single stepping in userspace misses a few insns
right after the system call.

This is based a bit on the SuperH code added in commit 4b505db9c4.

Reported-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

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This commit is contained in:

Mike Frysinger 2010-02-17 10:44:22 +00:00

parent e8f263dfd3

commit 600482c13d

4 changed files with 15 additions and 3 deletions

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2

arch/blackfin/include/asm/thread_info.h

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11

arch/blackfin/kernel/ptrace.c

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3

arch/blackfin/kernel/signal.c

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2

arch/blackfin/mach-common/entry.S

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