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| author | Tiejun Chen <tiejun.chen@windriver.com> | 2012-08-22 18:10:19 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-08-24 12:26:05 +0200 |
| commit | 949616cf2d3095d1bb6b3d155c1cc963abd98b5c (patch) | |
| tree | d43c1516a726aff6a7d53d081e89fab03a09d4ca /arch/powerpc | |
| parent | powerpc/kgdb: Do not set kgdb_single_step on ppc (diff) | |
| download | linux-949616cf2d3095d1bb6b3d155c1cc963abd98b5c.tar.xz linux-949616cf2d3095d1bb6b3d155c1cc963abd98b5c.zip | |
powerpc/kgdb: Bail out of KGDB when we've been triggered
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>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | 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 bbabc5abb1c4..05adb69febf4 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); |