Messages in this thread Patch in this message | | | From | Tiejun Chen <> | Subject | [v2][PATCH 2/3] powerpc: Bail out of KGDB when we've been triggered | Date | Thu, 23 Aug 2012 10:10:19 +0800 |
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We need to skip a breakpoint exception when it occurs after a breakpoint has already been removed.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> --- v2: simply kgdb_skipexception() return path.
arch/powerpc/kernel/kgdb.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c index bbabc5a..05adb69 100644 --- a/arch/powerpc/kernel/kgdb.c +++ b/arch/powerpc/kernel/kgdb.c @@ -101,6 +101,21 @@ static int computeSignal(unsigned int tt) return SIGHUP; /* default for things we don't know about */ } +/** + * + * kgdb_skipexception - Bail out of KGDB when we've been triggered. + * @exception: Exception vector number + * @regs: Current &struct pt_regs. + * + * On some architectures we need to skip a breakpoint exception when + * it occurs after a breakpoint has been removed. + * + */ +int kgdb_skipexception(int exception, struct pt_regs *regs) +{ + return kgdb_isremovedbreak(regs->nip); +} + static int kgdb_call_nmi_hook(struct pt_regs *regs) { kgdb_nmicallback(raw_smp_processor_id(), regs); -- 1.5.6
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