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- added an interface layer for ARM cores

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- cleaned up core.cpp a bit
This commit is contained in:
bunnei
2014-04-04 22:26:06 -04:00
parent d601d2e696
commit 69223d007e
7 changed files with 213 additions and 77 deletions
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3
src/core/core.vcxproj
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@@ -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" />

9
src/core/core.vcxproj.filters
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@@ -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" />

47
src/core/src/arm/arm_interface.h Normal file
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@@ -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;
};

86
src/core/src/arm/interpreter/arm_interpreter.cpp Normal file
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@@ -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;
}

50
src/core/src/arm/interpreter/arm_interpreter.h Normal file
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@@ -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;
};

87
src/core/src/core.cpp
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@@ -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

8
src/core/src/core.h
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@@ -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();