Hexagon: add individual register access for switch_stack

Signed-off-by: Richard Kuo <rkuo@codeaurora.org>

1 files changed, 43 insertions, 6 deletions

diff --git a/arch/hexagon/include/asm/processor.h b/arch/hexagon/include/asm/processor.h
index 6dd5d3706869..758bcd1f290c 100644
--- a/arch/hexagon/include/asm/processor.h
+++ b/arch/hexagon/include/asm/processor.h
@@ -100,12 +100,49 @@ extern unsigned long get_wchan(struct task_struct *p);
  */
 
 struct hexagon_switch_stack {
-        unsigned long long      r1716;
-        unsigned long long      r1918;
-        unsigned long long      r2120;
-        unsigned long long      r2322;
-        unsigned long long      r2524;
-        unsigned long long      r2726;
+        union {
+                struct {
+                        unsigned long r16;
+                        unsigned long r17;
+                };
+                unsigned long long      r1716;
+        };
+        union {
+                struct {
+                        unsigned long r18;
+                        unsigned long r19;
+                };
+                unsigned long long      r1918;
+        };
+        union {
+                struct {
+                        unsigned long r20;
+                        unsigned long r21;
+                };
+                unsigned long long      r2120;
+        };
+        union {
+                struct {
+                        unsigned long r22;
+                        unsigned long r23;
+                };
+                unsigned long long      r2322;
+        };
+        union {
+                struct {
+                        unsigned long r24;
+                        unsigned long r25;
+                };
+                unsigned long long      r2524;
+        };
+        union {
+                struct {
+                        unsigned long r26;
+                        unsigned long r27;
+                };
+                unsigned long long      r2726;
+        };
+
         unsigned long           fp;
         unsigned long           lr;
 };