From 3bffb6529cf10d48a97ac0d6d789986894c25c37 Mon Sep 17 00:00:00 2001 From: Dave Kleikamp Date: Mon, 8 Feb 2010 11:51:18 +0000 Subject: powerpc/booke: Add support for advanced debug registers powerpc/booke: Add support for advanced debug registers From: Dave Kleikamp 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 Cc: Torez Smith Cc: Benjamin Herrenschmidt Cc: David Gibson Cc: Josh Boyer Cc: Kumar Gala Cc: Sergio Durigan Junior Cc: Thiago Jung Bauermann Cc: linuxppc-dev list Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/signal_32.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/kernel/signal_32.c') diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index e4883ae36277..266610119f66 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1092,8 +1092,12 @@ int sys_debug_setcontext(struct ucontext __user *ctx, new_msr |= MSR_DE; new_dbcr0 |= (DBCR0_IDM | DBCR0_IC); } else { - new_msr &= ~MSR_DE; - new_dbcr0 &= ~(DBCR0_IDM | DBCR0_IC); + new_dbcr0 &= ~DBCR0_IC; + if (!DBCR_ACTIVE_EVENTS(new_dbcr0, + current->thread.dbcr1)) { + new_msr &= ~MSR_DE; + new_dbcr0 &= ~DBCR0_IDM; + } } #else if (op.dbg_value) -- cgit v1.2.3