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authorKumar Gala <galak@kernel.crashing.org>2008-07-26 05:27:33 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-28 16:30:47 +1000
commit2325f0a0c3d76bb515f3312ab2b16afdbffcc594 (patch)
tree69386c213a02b0900054cdcfcaf4372c3ec31a3e /arch/powerpc/kernel/ptrace.c
parentd3b060231b2e1eb7e7e9680ff93326a4ae576720 (diff)
powerpc/booke: Clean up the hardware watchpoint support
* CONFIG_BOOKE is selected by CONFIG_44x so we dont need both * Fixed a few comments * Go back to only using DBCR0_IDM to determine if we are using debug resources. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/ptrace.c')
-rw-r--r--arch/powerpc/kernel/ptrace.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index a5d0e78779c8..66204cb51a1a 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -717,7 +717,7 @@ void user_disable_single_step(struct task_struct *task)
struct pt_regs *regs = task->thread.regs;
-#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)
+#if defined(CONFIG_BOOKE)
/* If DAC then do not single step, skip */
if (task->thread.dabr)
return;
@@ -744,10 +744,11 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
if (addr > 0)
return -EINVAL;
+ /* The bottom 3 bits in dabr are flags */
if ((data & ~0x7UL) >= TASK_SIZE)
return -EIO;
-#ifdef CONFIG_PPC64
+#ifndef CONFIG_BOOKE
/* For processors using DABR (i.e. 970), the bottom 3 bits are flags.
* It was assumed, on previous implementations, that 3 bits were
@@ -769,7 +770,7 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
task->thread.dabr = data;
#endif
-#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)
+#if defined(CONFIG_BOOKE)
/* As described above, it was assumed 3 bits were passed with the data
* address, but we will assume only the mode bits will be passed