From c3ffe8f9c3410521eba90e5bb3b2d6a683506731 Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Mon, 6 Apr 2015 12:57:49 -0400
Subject: arm_interface: Support retrieval/storage to CP15 registers

---
 src/core/arm/arm_interface.h       | 15 +++++++++++++++
 src/core/arm/dyncom/arm_dyncom.cpp |  8 ++++++++
 src/core/arm/dyncom/arm_dyncom.h   |  2 ++
 3 files changed, 25 insertions(+)

diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index fe1e584a..31066377 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -6,6 +6,7 @@
 
 #include "common/common.h"
 #include "common/common_types.h"
+#include "core/arm/skyeye_common/arm_regformat.h"
 
 namespace Core {
     struct ThreadContext;
@@ -73,6 +74,20 @@ public:
      */
     virtual void SetCPSR(u32 cpsr) = 0;
 
+    /**
+     * Gets the value stored in a CP15 register.
+     * @param reg The CP15 register to retrieve the value from.
+     * @return the value stored in the given CP15 register.
+     */
+    virtual u32 GetCP15Register(CP15Register reg) = 0;
+
+    /**
+     * Stores the given value into the indicated CP15 register.
+     * @param reg   The CP15 register to store the value into.
+     * @param value The value to store into the CP15 register.
+     */
+    virtual void SetCP15Register(CP15Register reg, u32 value) = 0;
+
     /**
      * Advance the CPU core by the specified number of ticks (e.g. to simulate CPU execution time)
      * @param ticks Number of ticks to advance the CPU core
diff --git a/src/core/arm/dyncom/arm_dyncom.cpp b/src/core/arm/dyncom/arm_dyncom.cpp
index cb1a410a..1b1d0142 100644
--- a/src/core/arm/dyncom/arm_dyncom.cpp
+++ b/src/core/arm/dyncom/arm_dyncom.cpp
@@ -68,6 +68,14 @@ void ARM_DynCom::SetCPSR(u32 cpsr) {
     state->Cpsr = cpsr;
 }
 
+u32 ARM_DynCom::GetCP15Register(CP15Register reg) {
+    return state->CP15[reg];
+}
+
+void ARM_DynCom::SetCP15Register(CP15Register reg, u32 value) {
+    state->CP15[reg] = value;
+}
+
 void ARM_DynCom::AddTicks(u64 ticks) {
     down_count -= ticks;
     if (down_count < 0)
diff --git a/src/core/arm/dyncom/arm_dyncom.h b/src/core/arm/dyncom/arm_dyncom.h
index a7f95d30..822b3bbb 100644
--- a/src/core/arm/dyncom/arm_dyncom.h
+++ b/src/core/arm/dyncom/arm_dyncom.h
@@ -22,6 +22,8 @@ public:
     void SetReg(int index, u32 value) override;
     u32 GetCPSR() const override;
     void SetCPSR(u32 cpsr) override;
+    u32 GetCP15Register(CP15Register reg) override;
+    void SetCP15Register(CP15Register reg, u32 value) override;
 
     void AddTicks(u64 ticks) override;
 
-- 
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