ARM: iwmmxt: Use undef hook to enable coprocessor for task

[sfrench/cifs-2.6.git] / arch / arm / include / asm / thread_info.h

diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 85c5f1e02ebf83ca44ee34ff3f6092b95754a7ba..943ffcf069d29cf4a035964d20d56f7ebdd6d602 100644 (file)
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -40,6 +40,7 @@ struct task_struct;
 DECLARE_PER_CPU(struct task_struct *, __entry_task);
 
 #include <asm/types.h>
+#include <asm/traps.h>
 
 struct cpu_context_save {
        __u32   r4;
@@ -104,6 +105,21 @@ extern void iwmmxt_task_restore(struct thread_info *, void *);
 extern void iwmmxt_task_release(struct thread_info *);
 extern void iwmmxt_task_switch(struct thread_info *);
 
+extern int iwmmxt_undef_handler(struct pt_regs *, u32);
+
+static inline void register_iwmmxt_undef_handler(void)
+{
+       static struct undef_hook iwmmxt_undef_hook = {
+               .instr_mask     = 0x0c000e00,
+               .instr_val      = 0x0c000000,
+               .cpsr_mask      = MODE_MASK | PSR_T_BIT,
+               .cpsr_val       = USR_MODE,
+               .fn             = iwmmxt_undef_handler,
+       };
+
+       register_undef_hook(&iwmmxt_undef_hook);
+}
+
 extern void vfp_sync_hwstate(struct thread_info *);
 extern void vfp_flush_hwstate(struct thread_info *);