From 69223d007ef70cbcbe4b0db47c00b2f4837f5d23 Mon Sep 17 00:00:00 2001
From: bunnei <ericbunnie@gmail.com>
Date: Fri, 4 Apr 2014 22:26:06 -0400
Subject: [PATCH] - added an interface layer for ARM cores
- cleaned up core.cpp a bit
---
src/core/core.vcxproj | 3 +
src/core/core.vcxproj.filters | 9 ++
src/core/src/arm/arm_interface.h | 47 ++++++++++
.../src/arm/interpreter/arm_interpreter.cpp | 86 ++++++++++++++++++
.../src/arm/interpreter/arm_interpreter.h | 50 +++++++++++
src/core/src/core.cpp | 87 +++----------------
src/core/src/core.h | 8 +-
7 files changed, 213 insertions(+), 77 deletions(-)
create mode 100644 src/core/src/arm/arm_interface.h
create mode 100644 src/core/src/arm/interpreter/arm_interpreter.cpp
create mode 100644 src/core/src/arm/interpreter/arm_interpreter.h
diff --git a/src/core/core.vcxproj b/src/core/core.vcxproj
index 4cd55c5758..bee9f30467 100644
--- a/src/core/core.vcxproj
+++ b/src/core/core.vcxproj
@@ -144,6 +144,7 @@
<ClCompile Include="src\arm\interpreter\armos.cpp" />
<ClCompile Include="src\arm\interpreter\armsupp.cpp" />
<ClCompile Include="src\arm\interpreter\armvirt.cpp" />
+ <ClCompile Include="src\arm\interpreter\arm_interpreter.cpp" />
<ClCompile Include="src\arm\interpreter\thumbemu.cpp" />
<ClCompile Include="src\arm\mmu\arm1176jzf_s_mmu.cpp" />
<ClCompile Include="src\core.cpp" />
@@ -157,12 +158,14 @@
<ClCompile Include="src\system.cpp" />
</ItemGroup>
<ItemGroup>
+ <ClInclude Include="src\arm\arm_interface.h" />
<ClInclude Include="src\arm\disassembler\arm_disasm.h" />
<ClInclude Include="src\arm\interpreter\armcpu.h" />
<ClInclude Include="src\arm\interpreter\armdefs.h" />
<ClInclude Include="src\arm\interpreter\armemu.h" />
<ClInclude Include="src\arm\interpreter\armmmu.h" />
<ClInclude Include="src\arm\interpreter\armos.h" />
+ <ClInclude Include="src\arm\interpreter\arm_interpreter.h" />
<ClInclude Include="src\arm\interpreter\arm_regformat.h" />
<ClInclude Include="src\arm\interpreter\skyeye_defs.h" />
<ClInclude Include="src\arm\mmu\arm1176jzf_s_mmu.h" />
diff --git a/src/core/core.vcxproj.filters b/src/core/core.vcxproj.filters
index fe583127ab..45ddf8cf64 100644
--- a/src/core/core.vcxproj.filters
+++ b/src/core/core.vcxproj.filters
@@ -43,6 +43,9 @@
<ClCompile Include="src\arm\interpreter\thumbemu.cpp">
<Filter>arm\interpreter</Filter>
</ClCompile>
+ <ClCompile Include="src\arm\interpreter\arm_interpreter.cpp">
+ <Filter>arm\interpreter</Filter>
+ </ClCompile>
</ItemGroup>
<ItemGroup>
<Filter Include="arm">
@@ -127,6 +130,12 @@
<ClInclude Include="src\arm\interpreter\skyeye_defs.h">
<Filter>arm\interpreter</Filter>
</ClInclude>
+ <ClInclude Include="src\arm\arm_interface.h">
+ <Filter>arm</Filter>
+ </ClInclude>
+ <ClInclude Include="src\arm\interpreter\arm_interpreter.h">
+ <Filter>arm\interpreter</Filter>
+ </ClInclude>
</ItemGroup>
<ItemGroup>
<None Include="CMakeLists.txt" />
diff --git a/src/core/src/arm/arm_interface.h b/src/core/src/arm/arm_interface.h
new file mode 100644
index 0000000000..785234396a
--- /dev/null
+++ b/src/core/src/arm/arm_interface.h
@@ -0,0 +1,47 @@
+/**
+ * Copyright (C) 2013 Citrus Emulator
+ *
+ * @file arm_interface.h
+ * @author bunnei
+ * @date 2014-04-04
+ * @brief Generic ARM CPU core interface
+ *
+ * @section LICENSE
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details at
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * Official project repository can be found at:
+ * http://code.google.com/p/gekko-gc-emu/
+ */
+
+#pragma once
+
+#include "common_types.h"
+
+/// Generic ARM11 CPU interface
+class ARM_Interface {
+public:
+ ARM_Interface() {
+ }
+
+ ~ARM_Interface() {
+ }
+
+ virtual void ExecuteInstruction() = 0;
+
+ virtual void SetPC(u32 pc) = 0;
+
+ virtual u32 PC() = 0;
+
+ virtual u32 Reg(int index) = 0;
+
+ virtual u32 CPSR() = 0;
+};
diff --git a/src/core/src/arm/interpreter/arm_interpreter.cpp b/src/core/src/arm/interpreter/arm_interpreter.cpp
new file mode 100644
index 0000000000..9305069634
--- /dev/null
+++ b/src/core/src/arm/interpreter/arm_interpreter.cpp
@@ -0,0 +1,86 @@
+/**
+* Copyright (C) 2013 Citrus Emulator
+*
+* @file arm_interpreter.h
+* @author bunnei
+* @date 2014-04-04
+* @brief ARM interface instance for SkyEye interprerer
+*
+* @section LICENSE
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details at
+* http://www.gnu.org/copyleft/gpl.html
+*
+* Official project repository can be found at:
+* http://code.google.com/p/gekko-gc-emu/
+*/
+
+#include "arm_interpreter.h"
+
+const static cpu_config_t s_arm11_cpu_info = {
+ "armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE
+};
+
+ARM_Interpreter::ARM_Interpreter() {
+
+ state = new ARMul_State;
+
+ ARMul_EmulateInit();
+ ARMul_NewState(state);
+
+ state->abort_model = 0;
+ state->cpu = (cpu_config_t*)&s_arm11_cpu_info;
+ state->bigendSig = LOW;
+
+ ARMul_SelectProcessor(state, ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
+ state->lateabtSig = LOW;
+ mmu_init(state);
+
+ // Reset the core to initial state
+ ARMul_Reset(state);
+ state->NextInstr = 0;
+ state->Emulate = 3;
+
+ state->pc = state->Reg[15] = 0x00000000;
+ state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack
+}
+
+void ARM_Interpreter::SetPC(u32 pc) {
+ state->pc = state->Reg[15] = pc;
+}
+
+u32 ARM_Interpreter::PC() {
+ return state->pc;
+}
+
+u32 ARM_Interpreter::Reg(int index){
+ return state->Reg[index];
+}
+
+u32 ARM_Interpreter::CPSR() {
+ return state->Cpsr;
+}
+
+ARM_Interpreter::~ARM_Interpreter() {
+ delete state;
+}
+
+void ARM_Interpreter::ExecuteInstruction() {
+ state->step++;
+ state->cycle++;
+ state->EndCondition = 0;
+ state->stop_simulator = 0;
+ state->NextInstr = RESUME;
+ state->last_pc = state->Reg[15];
+ state->Reg[15] = ARMul_DoInstr(state);
+ state->Cpsr = ((state->Cpsr & 0x0fffffdf) | (state->NFlag << 31) | (state->ZFlag << 30) |
+ (state->CFlag << 29) | (state->VFlag << 28) | (state->TFlag << 5));
+ FLUSHPIPE;
+}
diff --git a/src/core/src/arm/interpreter/arm_interpreter.h b/src/core/src/arm/interpreter/arm_interpreter.h
new file mode 100644
index 0000000000..89f871fa93
--- /dev/null
+++ b/src/core/src/arm/interpreter/arm_interpreter.h
@@ -0,0 +1,50 @@
+/**
+* Copyright (C) 2013 Citrus Emulator
+*
+* @file arm_interpreter.h
+* @author bunnei
+* @date 2014-04-04
+* @brief ARM interface instance for SkyEye interprerer
+*
+* @section LICENSE
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details at
+* http://www.gnu.org/copyleft/gpl.html
+*
+* Official project repository can be found at:
+* http://code.google.com/p/gekko-gc-emu/
+*/
+
+#pragma once
+
+#include "common_types.h"
+#include "arm/arm_interface.h"
+
+#include "arm/interpreter/armdefs.h"
+#include "arm/interpreter/armemu.h"
+
+class ARM_Interpreter : virtual public ARM_Interface {
+public:
+ ARM_Interpreter();
+ ~ARM_Interpreter();
+
+ void ExecuteInstruction();
+
+ void SetPC(u32 pc);
+
+ u32 PC();
+
+ u32 Reg(int index);
+
+ u32 CPSR();
+
+private:
+ ARMul_State* state;
+};
diff --git a/src/core/src/core.cpp b/src/core/src/core.cpp
index edae66b9f4..5928051346 100644
--- a/src/core/src/core.cpp
+++ b/src/core/src/core.cpp
@@ -25,28 +25,14 @@
#include "log.h"
#include "core.h"
#include "mem_map.h"
-#include "arm/armdefs.h"
-#include "arm/armemu.h"
#include "arm/disassembler/arm_disasm.h"
+#include "arm/interpreter/arm_interpreter.h"
namespace Core {
-typedef struct arm11_core{
- conf_object_t* obj;
- ARMul_State* state;
- memory_space_intf* space;
-}arm11_core_t;
-
-arm11_core* core = NULL;
-
-Arm* disasm = NULL;
-
-//ARMul_State* g_arm_state = NULL;
-
-/// Start the core
-void Start() {
- // TODO(ShizZy): ImplementMe
-}
+ARM_Disasm* g_disasm = NULL; ///< ARM disassembler
+ARM_Interface* g_app_core = NULL; ///< ARM11 application core
+ARM_Interface* g_sys_core = NULL; ///< ARM11 system (OS) core
/// Run the core CPU loop
void RunLoop() {
@@ -55,23 +41,7 @@ void RunLoop() {
/// Step the CPU one instruction
void SingleStep() {
- ARMul_State *state = core->state;
-
- state->step++;
- state->cycle++;
- state->EndCondition = 0;
- state->stop_simulator = 0;
- state->NextInstr = RESUME; /* treat as PC change */
- state->last_pc = state->Reg[15];
- state->Reg[15] = ARMul_DoInstr(state);
- state->Cpsr = (state->Cpsr & 0x0fffffdf) | \
- (state->NFlag << 31) | \
- (state->ZFlag << 30) | \
- (state->CFlag << 29) | \
- (state->VFlag << 28);// | \
- //(state->TFlag << 5);
-
- FLUSHPIPE;
+ g_app_core->ExecuteInstruction();
}
/// Halt the core
@@ -85,55 +55,20 @@ void Stop() {
}
/// Initialize the core
-const static cpu_config_t arm11_cpu_info = { "armv6", "arm11", 0x0007b000, 0x0007f000, NONCACHE };
int Init() {
NOTICE_LOG(MASTER_LOG, "Core initialized OK");
- disasm = new Arm();
- core = (arm11_core_t*)malloc(sizeof(arm11_core_t));
- //core->obj = new_conf_object(obj_name, core);
- ARMul_EmulateInit();
- ARMul_State* state = new ARMul_State;
- ARMul_NewState(state);
- state->abort_model = 0;
- state->cpu = (cpu_config_t*)&arm11_cpu_info;
- state->bigendSig = LOW;
+ g_disasm = new ARM_Disasm();
+ g_app_core = new ARM_Interpreter();
+ g_sys_core = new ARM_Interpreter();
- ARMul_SelectProcessor(state, ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
- state->lateabtSig = LOW;
- mmu_init(state);
- /* reset the core to initial state */
- ARMul_Reset(state);
- state->NextInstr = 0;
- state->Emulate = 3;
-#if 0
- state->mmu.ops.read_byte = arm11_read_byte;
- state->mmu.ops.read_halfword = arm11_read_halfword;
- state->mmu.ops.read_word = arm11_read_word;
- state->mmu.ops.write_byte = arm11_write_byte;
- state->mmu.ops.write_halfword = arm11_write_halfword;
- state->mmu.ops.write_word = arm11_write_word;
-#endif
- core->state = state;
-
- state->pc = state->Reg[15] = 0x080c3ee0; // Hardcoded set PC to start address of a homebrew ROM
- // this is where most launcher.dat code loads /bunnei
-
- state->Reg[13] = 0x10000000; // Set stack pointer to the top of the stack, not sure if this is
- // right? /bunnei
-
- //state->s
return 0;
}
-ARMul_State* GetState()
-{
- return core->state;
-}
-
void Shutdown() {
- //delete g_arm_state;
- //g_arm_state = NULL;
+ delete g_disasm;
+ delete g_app_core;
+ delete g_sys_core;
}
} // namespace
diff --git a/src/core/src/core.h b/src/core/src/core.h
index f4a3ca05d4..f41daca6ab 100644
--- a/src/core/src/core.h
+++ b/src/core/src/core.h
@@ -25,12 +25,18 @@
#ifndef CORE_CORE_H_
#define CORE_CORE_H_
-#include "arm/armdefs.h"
+#include "arm/arm_interface.h"
+#include "arm/interpreter/armdefs.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace Core {
+extern ARM_Interface* g_app_core; ///< ARM11 application core
+extern ARM_Interface* g_sys_core; ///< ARM11 system (OS) core
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
/// Start the core
void Start();