[PATCH] ppc64: Add ptrace data breakpoint support

Add hardware data breakpoint support.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
index bf7116d4c4c2..85ed3188a91d 100644
--- a/arch/ppc64/kernel/ptrace.c
+++ b/arch/ppc64/kernel/ptrace.c
@@ -207,6 +207,19 @@ int sys_ptrace(long request, long pid, long addr, long data)
                 break;
         }
 
+        case PTRACE_GET_DEBUGREG: {
+                ret = -EINVAL;
+                /* We only support one DABR and no IABRS at the moment */
+                if (addr > 0)
+                        break;
+                ret = put_user(child->thread.dabr,
+                               (unsigned long __user *)data);
+                break;
+        }
+
+        case PTRACE_SET_DEBUGREG:
+                ret = ptrace_set_debugreg(child, addr, data);
+
         case PTRACE_DETACH:
                 ret = ptrace_detach(child, data);
                 break;