updated how we call ARM core to make things much faster

8 files changed, 44 insertions, 30 deletions

diff --git a/src/citra/citra.cpp b/src/citra/citra.cpp
index d55b9739..6f3bc6f8 100644
--- a/src/citra/citra.cpp
+++ b/src/citra/citra.cpp
@@ -18,26 +18,24 @@
 int __cdecl main(int argc, char **argv) {
     std::string program_dir = File::GetCurrentDir();
 
-	LogManager::Init();
+    LogManager::Init();
 
     EmuWindow_GLFW* emu_window = new EmuWindow_GLFW;
 
-	System::Init(emu_window);
+    System::Init(emu_window);
 
     std::string boot_filename = "homebrew.elf";
     std::string error_str;
-    
+
     bool res = Loader::LoadFile(boot_filename, &error_str);
 
     if (!res) {
         ERROR_LOG(BOOT, "Failed to load ROM: %s", error_str.c_str());
     }
 
-    for (;;) {
-        Core::SingleStep();
-    }
+    Core::RunLoop();
 
     delete emu_window;
 
-	return 0;
+    return 0;
 }
diff --git a/src/citra_qt/bootmanager.cpp b/src/citra_qt/bootmanager.cpp
index 31958ac2..cf9e1bff 100644
--- a/src/citra_qt/bootmanager.cpp
+++ b/src/citra_qt/bootmanager.cpp
@@ -6,6 +6,8 @@
 
 #include "core/core.h"
 #include "core/loader.h"
+#include "core/hw/hw.h"
+
 #include "video_core/video_core.h"
 
 #include "version.h"
@@ -40,6 +42,7 @@ void EmuThread::run()
                     emit CPUStepped();
             }
         }
+        HW::Update();
     }
 
     Core::Stop();
diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index 4dfe0570..9fdc7ba3 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -17,12 +17,20 @@ public:
     ~ARM_Interface() {
     }
 
+    /**
+     * Runs the CPU for the given number of instructions
+     * @param num_instructions Number of instructions to run
+     */
+    void Run(int num_instructions) {
+        ExecuteInstructions(num_instructions);
+        m_num_instructions += num_instructions;
+    }
+
     /// Step CPU by one instruction
     void Step() {
-        ExecuteInstruction();
-        m_num_instructions++;
+        Run(1);
     }
- 
+
     /**
      * Set the Program Counter to an address
      * @param addr Address to set PC to
@@ -68,8 +76,11 @@ public:
 
 protected:
     
-    /// Execture next instruction
-    virtual void ExecuteInstruction() = 0;
+    /**
+     * Executes the given number of instructions
+     * @param num_instructions Number of instructions to executes
+     */
+    virtual void ExecuteInstructions(int num_instructions) = 0;
 
 private:
 
diff --git a/src/core/arm/interpreter/arm_interpreter.cpp b/src/core/arm/interpreter/arm_interpreter.cpp
index 4652803d..23d96d29 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 625c0c65..50902508 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 821825ae..5b2abc7f 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 87141653..32e315f4 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;
diff --git a/src/core/core.cpp b/src/core/core.cpp
index 859a62c7..61c237b2 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -4,8 +4,9 @@
 
 #include "common/common_types.h"
 #include "common/log.h"
-#include "core/core.h"
+#include "common/symbols.h"
 
+#include "core/core.h"
 #include "core/mem_map.h"
 #include "core/hw/hw.h"
 #include "core/arm/disassembler/arm_disasm.h"
@@ -19,13 +20,15 @@ ARM_Interface*  g_sys_core  = NULL; ///< ARM11 system (OS) core
 
 /// Run the core CPU loop
 void RunLoop() {
-    // TODO(ShizZy): ImplementMe
+    for (;;){
+        g_app_core->Run(10000);
+        HW::Update();
+    }
 }
 
 /// Step the CPU one instruction
 void SingleStep() {
     g_app_core->Step();
-    HW::Update();
 }
 
 /// Halt the core