commit 3ebedbb2fdf730b7e5e2417dbd37faee6304bfb5
author Vineet Gupta <vgupta@synopsys.com> Tue May 28 13:24:43 2013 +0530
committer Vineet Gupta <vgupta@synopsys.com> Sat Jun 22 19:23:23 2013 +0530
tree c902fc923c5094ca614b389399c3b9ebb2ee90be
parent 16f9afe651e8197fb7ce6df0990d8e2ad779e1af

ARC: Increase readability of entry handlers

* use artificial PUSH/POP contructs for CORE Reg save/restore to stack
* use artificial PUSHAX/POPAX contructs for Auxiliary Space regs
* macro'ize multiple copies of callee-reg-save/restore (SAVE_R13_TO_R24)
* use BIC insn for inverse-and operation

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/process.c

diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index db868db..c6e22e0 100644
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -73,6 +73,10 @@
  * ~                ~
  * |    --to--      |   (scratch Regs of user mode)
  * |     r0         |
+ * ------------------
+ * |      SP        |
+ * |    orig_r0     |
+ * |    orig_r8     |
  * ------------------  <===== END of PAGE
  */
 int copy_thread(unsigned long clone_flags,