From 265c770a9d663b96a9a422201bac3dd454fa95c0 Mon Sep 17 00:00:00 2001
From: bunnei <ericbunnie@gmail.com>
Date: Sat, 17 May 2014 11:59:18 -0400
Subject: updated how we call ARM core to make things much faster

---
 src/core/arm/interpreter/arm_interpreter.cpp | 19 +++++++------------
 src/core/arm/interpreter/arm_interpreter.h   |  7 +++++--
 src/core/arm/interpreter/armdefs.h           |  1 +
 src/core/arm/interpreter/armemu.cpp          |  2 +-
 4 files changed, 14 insertions(+), 15 deletions(-)

(limited to 'src/core/arm/interpreter')

diff --git a/src/core/arm/interpreter/arm_interpreter.cpp b/src/core/arm/interpreter/arm_interpreter.cpp
index 4652803de..23d96d292 100644
--- a/src/core/arm/interpreter/arm_interpreter.cpp
+++ b/src/core/arm/interpreter/arm_interpreter.cpp
@@ -85,16 +85,11 @@ u64 ARM_Interpreter::GetTicks() const {
     return ARMul_Time(m_state);
 }
 
-/// Execture next instruction
-void ARM_Interpreter::ExecuteInstruction() {
-    m_state->step++;
-    m_state->cycle++;
-    m_state->EndCondition = 0;
-    m_state->stop_simulator = 0;
-    m_state->NextInstr = RESUME;
-    m_state->last_pc = m_state->Reg[15];
-    m_state->Reg[15] = ARMul_DoInstr(m_state);
-    m_state->Cpsr = ((m_state->Cpsr & 0x0fffffdf) | (m_state->NFlag << 31) | (m_state->ZFlag << 30) | 
-                   (m_state->CFlag << 29) | (m_state->VFlag << 28) | (m_state->TFlag << 5));
-    m_state->NextInstr |= PRIMEPIPE; // Flush pipe
+/**
+ * Executes the given number of instructions
+ * @param num_instructions Number of instructions to executes
+ */
+void ARM_Interpreter::ExecuteInstructions(int num_instructions) {
+    m_state->NumInstrsToExecute = num_instructions;
+    ARMul_Emulate32(m_state);
 }
diff --git a/src/core/arm/interpreter/arm_interpreter.h b/src/core/arm/interpreter/arm_interpreter.h
index 625c0c652..509025080 100644
--- a/src/core/arm/interpreter/arm_interpreter.h
+++ b/src/core/arm/interpreter/arm_interpreter.h
@@ -56,8 +56,11 @@ public:
 
 protected:
 
-    /// Execture next instruction
-    void ExecuteInstruction();
+    /**
+     * Executes the given number of instructions
+     * @param num_instructions Number of instructions to executes
+     */
+    void ExecuteInstructions(int num_instructions);
 
 private:
 
diff --git a/src/core/arm/interpreter/armdefs.h b/src/core/arm/interpreter/armdefs.h
index 821825ae6..5b2abc7f7 100644
--- a/src/core/arm/interpreter/armdefs.h
+++ b/src/core/arm/interpreter/armdefs.h
@@ -288,6 +288,7 @@ struct ARMul_State
     ARMword loaded_addr, decoded_addr;    /* saved pipeline state addr*/
     unsigned int NumScycles, NumNcycles, NumIcycles, NumCcycles, NumFcycles;    /* emulated cycles used */
     unsigned long long NumInstrs;    /* the number of instructions executed */
+    unsigned NumInstrsToExecute;
     unsigned NextInstr;
     unsigned VectorCatch;    /* caught exception mask */
     unsigned CallDebug;    /* set to call the debugger */
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index 87141653f..32e315f4b 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -4734,7 +4734,7 @@ TEST_EMULATE:
         else if (state->Emulate != RUN)
             break;
     }
-    while (!state->stop_simulator);
+    while (state->NumInstrsToExecute--);
 
     state->decoded = decoded;
     state->loaded = loaded;
-- 
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