1 files changed, 35 insertions, 18 deletions

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index a2ea3854cb3c..08f899fb76a6 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -499,10 +499,41 @@ static struct undef_hook thumb_break_hook = {
         .fn             = break_trap,
 };
 
+static int thumb2_break_trap(struct pt_regs *regs, unsigned int instr)
+{
+        unsigned int instr2;
+        void __user *pc;
+
+        /* Check the second half of the instruction.  */
+        pc = (void __user *)(instruction_pointer(regs) + 2);
+
+        if (processor_mode(regs) == SVC_MODE) {
+                instr2 = *(u16 *) pc;
+        } else {
+                get_user(instr2, (u16 __user *)pc);
+        }
+
+        if (instr2 == 0xa000) {
+                ptrace_break(current, regs);
+                return 0;
+        } else {
+                return 1;
+        }
+}
+
+static struct undef_hook thumb2_break_hook = {
+        .instr_mask     = 0xffff,
+        .instr_val      = 0xf7f0,
+        .cpsr_mask      = PSR_T_BIT,
+        .cpsr_val       = PSR_T_BIT,
+        .fn             = thumb2_break_trap,
+};
+
 static int __init ptrace_break_init(void)
 {
         register_undef_hook(&arm_break_hook);
         register_undef_hook(&thumb_break_hook);
+        register_undef_hook(&thumb2_break_hook);
         return 0;
 }
 
@@ -669,7 +700,7 @@ static int ptrace_getvfpregs(struct task_struct *tsk, void __user *data)
         union vfp_state *vfp = &thread->vfpstate;
         struct user_vfp __user *ufp = data;
 
-        vfp_sync_state(thread);
+        vfp_sync_hwstate(thread);
 
         /* copy the floating point registers */
         if (copy_to_user(&ufp->fpregs, &vfp->hard.fpregs,
@@ -692,7 +723,7 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
         union vfp_state *vfp = &thread->vfpstate;
         struct user_vfp __user *ufp = data;
 
-        vfp_sync_state(thread);
+        vfp_sync_hwstate(thread);
 
         /* copy the floating point registers */
         if (copy_from_user(&vfp->hard.fpregs, &ufp->fpregs,
@@ -703,6 +734,8 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
         if (get_user(vfp->hard.fpscr, &ufp->fpscr))
                 return -EFAULT;
 
+        vfp_flush_hwstate(thread);
+
         return 0;
 }
 #endif
@@ -712,26 +745,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
         int ret;
 
         switch (request) {
-                /*
-                 * read word at location "addr" in the child process.
-                 */
-                case PTRACE_PEEKTEXT:
-                case PTRACE_PEEKDATA:
-                        ret = generic_ptrace_peekdata(child, addr, data);
-                        break;
-
                 case PTRACE_PEEKUSR:
                         ret = ptrace_read_user(child, addr, (unsigned long __user *)data);
                         break;
 
-                /*
-                 * write the word at location addr.
-                 */
-                case PTRACE_POKETEXT:
-                case PTRACE_POKEDATA:
-                        ret = generic_ptrace_pokedata(child, addr, data);
-                        break;
-
                 case PTRACE_POKEUSR:
                         ret = ptrace_write_user(child, addr, data);
                         break;