Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[pandora-kernel.git] / arch / arm / kernel / ptrace.c

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index df653ea..89882a1 100644 (file)
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -653,6 +653,54 @@ static int ptrace_setcrunchregs(struct task_struct *tsk, void __user *ufp)
 }
 #endif
 
+#ifdef CONFIG_VFP
+/*
+ * Get the child VFP state.
+ */
+static int ptrace_getvfpregs(struct task_struct *tsk, void __user *data)
+{
+       struct thread_info *thread = task_thread_info(tsk);
+       union vfp_state *vfp = &thread->vfpstate;
+       struct user_vfp __user *ufp = data;
+
+       vfp_sync_state(thread);
+
+       /* copy the floating point registers */
+       if (copy_to_user(&ufp->fpregs, &vfp->hard.fpregs,
+                        sizeof(vfp->hard.fpregs)))
+               return -EFAULT;
+
+       /* copy the status and control register */
+       if (put_user(vfp->hard.fpscr, &ufp->fpscr))
+               return -EFAULT;
+
+       return 0;
+}
+
+/*
+ * Set the child VFP state.
+ */
+static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
+{
+       struct thread_info *thread = task_thread_info(tsk);
+       union vfp_state *vfp = &thread->vfpstate;
+       struct user_vfp __user *ufp = data;
+
+       vfp_sync_state(thread);
+
+       /* copy the floating point registers */
+       if (copy_from_user(&vfp->hard.fpregs, &ufp->fpregs,
+                          sizeof(vfp->hard.fpregs)))
+               return -EFAULT;
+
+       /* copy the status and control register */
+       if (get_user(vfp->hard.fpscr, &ufp->fpscr))
+               return -EFAULT;
+
+       return 0;
+}
+#endif
+
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
        int ret;
@@ -775,6 +823,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
                        break;
 #endif
 
+#ifdef CONFIG_VFP
+               case PTRACE_GETVFPREGS:
+                       ret = ptrace_getvfpregs(child, (void __user *)data);
+                       break;
+
+               case PTRACE_SETVFPREGS:
+                       ret = ptrace_setvfpregs(child, (void __user *)data);
+                       break;
+#endif
+
                default:
                        ret = ptrace_request(child, request, addr, data);
                        break;