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| author | Dave Kleikamp <shaggy@linux.vnet.ibm.com> | 2010-02-08 11:51:18 (GMT) |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-02-17 03:03:17 (GMT) |
| commit | 3bffb6529cf10d48a97ac0d6d789986894c25c37 (patch) | |
| tree | 6e86d39604f753b0597374c31e4a2fba2a8d55f0 /arch/powerpc/kernel/signal.c | |
| parent | 99396ac105f54fe3584374c7c70a5cb6def766e6 (diff) | |
| download | linux-3bffb6529cf10d48a97ac0d6d789986894c25c37.tar.xz | |
powerpc/booke: Add support for advanced debug registers
powerpc/booke: Add support for advanced debug registers
From: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Based on patches originally written by Torez Smith.
This patch defines context switch and trap related functionality
for BookE specific Debug Registers. It adds support to ptrace()
for setting and getting BookE related Debug Registers
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Torez Smith <lnxtorez@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Gibson <dwg@au1.ibm.com>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Sergio Durigan Junior <sergiodj@br.ibm.com>
Cc: Thiago Jung Bauermann <bauerman@br.ibm.com>
Cc: linuxppc-dev list <Linuxppc-dev@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/signal.c')
| -rw-r--r-- | arch/powerpc/kernel/signal.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index ad7044b..a0afb55 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -140,17 +140,15 @@ static int do_signal_pending(sigset_t *oldset, struct pt_regs *regs) return 0; /* no signals delivered */ } +#ifndef CONFIG_PPC_ADV_DEBUG_REGS /* * Reenable the DABR before delivering the signal to * user space. The DABR will have been cleared if it * triggered inside the kernel. */ - if (current->thread.dabr) { + if (current->thread.dabr) set_dabr(current->thread.dabr); -#ifdef CONFIG_PPC_ADV_DEBUG_REGS - mtspr(SPRN_DBCR0, current->thread.dbcr0); #endif - } if (is32) { if (ka.sa.sa_flags & SA_SIGINFO) |