From e590f0d1efe37448d16a86dd03fba1db6c0b4f65 Mon Sep 17 00:00:00 2001
From: Curtis Dunham <Curtis.Dunham@arm.com>
Date: Tue, 26 May 2015 03:21:45 -0400
Subject: arm: implement the CONTEXTIDR_EL2 system reg.

---
 src/arch/arm/miscregs.cc |  4 ++++
 src/arch/arm/miscregs.hh | 20 +++++++++++---------
 2 files changed, 15 insertions(+), 9 deletions(-)

(limited to 'src/arch/arm')

diff --git a/src/arch/arm/miscregs.cc b/src/arch/arm/miscregs.cc
index 729cb4e8b..3a40a27b0 100644
--- a/src/arch/arm/miscregs.cc
+++ b/src/arch/arm/miscregs.cc
@@ -1334,6 +1334,8 @@ bitset<NUM_MISCREG_INFOS> miscRegInfo[NUM_MISCREGS] = {
     bitset<NUM_MISCREG_INFOS>(string("11111111110000000100")),
     // MISCREG_CBAR_EL1
     bitset<NUM_MISCREG_INFOS>(string("01010101010000000001")),
+    // MISCREG_CONTEXTIDR_EL2
+    bitset<NUM_MISCREG_INFOS>(string("11111100000000000001")),
 
     // Dummy registers
     // MISCREG_NOP
@@ -3343,6 +3345,8 @@ decodeAArch64SysReg(unsigned op0, unsigned op1,
                 switch (crm) {
                   case 0:
                     switch (op2) {
+                      case 1:
+                        return MISCREG_CONTEXTIDR_EL2;
                       case 2:
                         return MISCREG_TPIDR_EL2;
                     }
diff --git a/src/arch/arm/miscregs.hh b/src/arch/arm/miscregs.hh
index 930902543..025507673 100644
--- a/src/arch/arm/miscregs.hh
+++ b/src/arch/arm/miscregs.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2014 ARM Limited
+ * Copyright (c) 2010-2015 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -663,16 +663,17 @@ namespace ArmISA
         MISCREG_CPUMERRSR_EL1,          // 596
         MISCREG_L2MERRSR_EL1,           // 597
         MISCREG_CBAR_EL1,               // 598
+        MISCREG_CONTEXTIDR_EL2,         // 599
 
         // Dummy registers
-        MISCREG_NOP,                    // 599
-        MISCREG_RAZ,                    // 600
-        MISCREG_CP14_UNIMPL,            // 601
-        MISCREG_CP15_UNIMPL,            // 602
-        MISCREG_A64_UNIMPL,             // 603
-        MISCREG_UNKNOWN,                // 604
-
-        NUM_MISCREGS                    // 605
+        MISCREG_NOP,                    // 600
+        MISCREG_RAZ,                    // 601
+        MISCREG_CP14_UNIMPL,            // 602
+        MISCREG_CP15_UNIMPL,            // 603
+        MISCREG_A64_UNIMPL,             // 604
+        MISCREG_UNKNOWN,                // 605
+
+        NUM_MISCREGS                    // 606
     };
 
     enum MiscRegInfo {
@@ -1344,6 +1345,7 @@ namespace ArmISA
         "cpumerrsr_el1",
         "l2merrsr_el1",
         "cbar_el1",
+        "contextidr_el2",
 
         // Dummy registers
         "nop",
-- 
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