From 2e23213f26fc747b3a4de3c87906bfd3399e95fa Mon Sep 17 00:00:00 2001
From: balrog <balrog@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 1 Aug 2007 02:31:54 +0000
Subject: [PATCH] Special-case iWMMXt register transfer insns, which are in ARM
 LDC2/STC2 class.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3107 c046a42c-6fe2-441c-8c8c-71466251a162
---
 target-arm/helper.c    | 8 +++++---
 target-arm/translate.c | 7 +++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 8132d0caf4..f1b170d030 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -838,9 +838,11 @@ void helper_set_cp15(CPUState *env, uint32_t insn, uint32_t val)
     case 15: /* Implementation specific.  */
         if (arm_feature(env, ARM_FEATURE_XSCALE)) {
             if (op2 == 0 && crm == 1) {
-                /* Changes cp0 to cp13 behavior, so needs a TB flush.  */
-                tb_flush(env);
-                env->cp15.c15_cpar = (val & 0x3fff) | 2;
+                if (env->cp15.c15_cpar != (val & 0x3fff)) {
+                    /* Changes cp0 to cp13 behavior, so needs a TB flush.  */
+                    tb_flush(env);
+                    env->cp15.c15_cpar = val & 0x3fff;
+                }
                 break;
             }
             goto bad_reg;
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 3ce93f89b1..799aef2f15 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -2230,6 +2230,13 @@ static void disas_arm_insn(CPUState * env, DisasContext *s)
             gen_op_movl_T0_im(val);
             gen_bx(s);
             return;
+        } else if ((insn & 0x0e000f00) == 0x0c000100) {
+            if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
+                /* iWMMXt register transfer.  */
+                if (env->cp15.c15_cpar & (1 << 1))
+                    if (!disas_iwmmxt_insn(env, s, insn))
+                        return;
+            }
         } else if ((insn & 0x0fe00000) == 0x0c400000) {
             /* Coprocessor double register transfer.  */
         } else if ((insn & 0x0f000010) == 0x0e000010) {