Update to v087r03 release.

byuu says:

I wanted to keep this a secret, but unlike other recent additions, this
will easily take several weeks, maybe months, to show anything.
Assuming I can even pull it off. Nothing technically overwhelming here,
I'm more worried about the near-impossibility of debugging the CPU.

bsnes/Makefile

@@ -3,6 +3,8 @@ include nall/Makefile
 nes := nes
 snes := snes
 gameboy := gameboy
+gba := gba
+
 profile := accuracy
 target := ui
 
@@ -11,28 +13,34 @@ target := ui
 # compiler
 c       := $(compiler) -std=gnu99
 cpp     := $(subst cc,++,$(compiler)) -std=gnu++0x
-flags   := -I. -march=native -O3 -fomit-frame-pointer
+flags   := -I. -O3 -fomit-frame-pointer
 link    :=
 objects := libco
 
 # profile-guided optimization mode
 # pgo := instrument
 # pgo := optimize
+# pgo := analyze
 
 ifeq ($(pgo),instrument)
   flags += -fprofile-generate
   link += -lgcov
 else ifeq ($(pgo),optimize)
   flags += -fprofile-use
+else ifeq ($(pgo),analyze)
+  flags := $(subst -fomit-frame-pointer,,$(flags))
+  flags += -pg
+  link += -pg -lgcov
 endif
 
 # platform
 ifeq ($(platform),x)
-  link += -s -ldl -lX11 -lXext
+  flags += -march=native
+  link += -ldl -lX11 -lXext
 else ifeq ($(platform),osx)
 else ifeq ($(platform),win)
   link += $(if $(findstring console,$(options)),-mconsole,-mwindows)
-  link += -mthreads -s -luuid -lkernel32 -luser32 -lgdi32 -lcomctl32 -lcomdlg32 -lshell32 -lole32
+  link += -mthreads -luuid -lkernel32 -luser32 -lgdi32 -lcomctl32 -lcomdlg32 -lshell32 -lole32
   link += -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc
 else
   unknown_platform: help;
@@ -91,6 +99,6 @@ sync:
 	rm -r phoenix/test
 
 archive-all:
-	tar -cjf bsnes.tar.bz2 base data gameboy libco nall nes obj out phoenix ruby snes target-debugger target-libsnes target-ui Makefile cc.bat purge.bat
+	tar -cjf bsnes.tar.bz2 base data gameboy gba libco nall nes obj out phoenix ruby snes target-debugger target-libsnes target-ui Makefile cc.bat purge.bat
 
 help:;

bsnes/base/base.hpp

@@ -1,7 +1,7 @@
 #ifndef BASE_HPP
 #define BASE_HPP
 
-const char Version[] = "087.02";
+const char Version[] = "087.03";
 
 #include <nall/platform.hpp>
 #include <nall/algorithm.hpp>

bsnes/gba/Makefile

@@ -0,0 +1,15 @@
+gba_objects := gba-interface gba-system gba-scheduler
+gba_objects += gba-cartridge gba-memory
+gba_objects += gba-cpu gba-ppu gba-apu
+gba_objects += gba-video
+objects += $(gba_objects)
+
+obj/gba-interface.o: $(gba)/interface/interface.cpp $(call rwildcard,$(gba)/interface)
+obj/gba-system.o: $(gba)/system/system.cpp $(call rwildcard,$(gba)/system)
+obj/gba-scheduler.o: $(gba)/scheduler/scheduler.cpp $(call rwildcard,$(gba)/scheduler)
+obj/gba-cartridge.o: $(gba)/cartridge/cartridge.cpp $(call rwildcard,$(gba)/cartridge)
+obj/gba-memory.o: $(gba)/memory/memory.cpp $(call rwildcard,$(gba)/memory)
+obj/gba-cpu.o: $(gba)/cpu/cpu.cpp $(call rwildcard,$(gba)/cpu)
+obj/gba-ppu.o: $(gba)/ppu/ppu.cpp $(call rwildcard,$(gba)/ppu)
+obj/gba-apu.o: $(gba)/apu/apu.cpp $(call rwildcard,$(gba)/apu)
+obj/gba-video.o: $(gba)/video/video.cpp $(call rwildcard,$(gba)/video)

bsnes/gba/apu/apu.cpp

@@ -0,0 +1,30 @@
+#include <gba/gba.hpp>
+
+#define APU_CPP
+namespace GBA {
+
+APU apu;
+
+void APU::Enter() { apu.enter(); }
+
+void APU::enter() {
+  while(true) {
+  //scheduler.synchronize_all();
+
+    interface->audioSample(0, 0);
+    step(1);
+  }
+}
+
+void APU::step(unsigned clocks) {
+  clock += clocks << 9;  //16777216hz / 32768hz = 512hz (1 << 9)
+  if(clock >= 0 && scheduler.sync != Scheduler::SynchronizeMode::All) {
+    co_switch(cpu.thread);
+  }
+}
+
+void APU::power() {
+  create(APU::Enter, 16777216);
+}
+
+}

bsnes/gba/apu/apu.hpp

@@ -0,0 +1,9 @@
+struct APU : Processor {
+  static void Enter();
+  void enter();
+  void step(unsigned clocks);
+
+  void power();
+};
+
+extern APU apu;

bsnes/gba/cartridge/cartridge.cpp

@@ -0,0 +1,35 @@
+#include <gba/gba.hpp>
+
+#define CARTRIDGE_CPP
+namespace GBA {
+
+Cartridge cartridge;
+
+void Cartridge::load(const string &markup, const uint8_t *data, unsigned size) {
+  romdata = new uint8_t[romsize = size];
+  memcpy(romdata, data, size);
+  sha256 = nall::sha256(data, size);
+
+  loaded = true;
+}
+
+void Cartridge::unload() {
+  if(loaded == false) return;
+
+  delete[] romdata;
+  romdata = nullptr;
+  romsize = 0u;
+
+  loaded = false;
+}
+
+void Cartridge::power() {
+}
+
+Cartridge::Cartridge() {
+  loaded = false;
+  romdata = nullptr;
+  romsize = 0u;
+}
+
+}

bsnes/gba/cartridge/cartridge.hpp

@@ -0,0 +1,16 @@
+struct Cartridge : property<Cartridge> {
+  readonly<bool> loaded;
+  readonly<string> sha256;
+
+  uint8_t *romdata;
+  unsigned romsize;
+
+  void load(const string &markup, const uint8_t *data, unsigned size);
+  void unload();
+
+  void power();
+
+  Cartridge();
+};
+
+extern Cartridge cartridge;

bsnes/gba/cpu/core/core.cpp

@@ -0,0 +1,3 @@
+void ARM7TDMI::power() {
+  for(auto &gpr : r) gpr = 0;
+}

bsnes/gba/cpu/core/core.hpp

@@ -0,0 +1,8 @@
+struct ARM7TDMI {
+  #include "registers.hpp"
+  GPR r[31];
+  PSR cpsr;
+  PSR spsr[5];
+
+  void power();
+};

bsnes/gba/cpu/core/registers.hpp

@@ -0,0 +1,62 @@
+struct GPR {
+  uint32 data;
+
+  inline operator uint32() const { return data; }
+  inline GPR& operator=(uint32 n) { data = n; return *this; }
+};
+
+struct PSR {
+  struct Mode {
+    enum : unsigned {
+      User      = 0x10,
+      FIQ       = 0x11,
+      IRQ       = 0x12,
+      SWI       = 0x13,
+      Abort     = 0x17,
+      Undefined = 0x1b,
+      System    = 0x1f,
+    };
+  };
+
+  bool n, z, c, v;
+  bool i, f, t;
+  unsigned mode;
+
+  inline operator uint32() const {
+    return (n << 31) | (z << 30) | (c << 29) | (v << 28)
+         | (i << 7) | (f << 6) | (t << 5) | (mode << 0);
+  }
+
+  inline PSR& operator=(uint32 d) {
+    n = d & (1 << 31);
+    z = d & (1 << 30);
+    c = d & (1 << 29);
+    v = d & (1 << 28);
+    i = d & (1 <<  7);
+    f = d & (1 <<  6);
+    t = d & (1 <<  5);
+    mode = d & 31;
+    return *this;
+  }
+};
+
+struct GPRs {
+  struct ID {
+    enum : unsigned {
+      R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, SP, LR, PC,
+      R8_FIQ, R9_FIQ, R10_FIQ, R11_FIQ, R12_FIQ, R13_FIQ, R14_FIQ,
+      R13_SWI, R14_SWI,
+      R13_Abort, R14_Abort,
+      R13_IRQ, R14_IRQ,
+      R13_Undefined, R14_Undefined,
+    };
+  };
+};
+
+struct SPSRs {
+  struct ID {
+    enum : unsigned {
+      FIQ, SWI, Abort, IRQ, Undefined,
+    };
+  };
+};

bsnes/gba/cpu/cpu.cpp

@@ -0,0 +1,32 @@
+#include <gba/gba.hpp>
+
+#define CPU_CPP
+namespace GBA {
+
+#include "core/core.cpp"
+CPU cpu;
+
+void CPU::Enter() { cpu.enter(); }
+
+void CPU::enter() {
+  while(true) {
+  //scheduler.synchronize_cpu();
+
+    step(4);
+  }
+}
+
+void CPU::step(unsigned clocks) {
+  ppu.clock -= clocks;
+  if(ppu.clock < 0) co_switch(ppu.thread);
+
+//apu.clock -= clocks;
+//if(apu.clock < 0) co_switch(apu.thread);
+}
+
+void CPU::power() {
+  create(CPU::Enter, 16777216);
+  ARM7TDMI::power();
+}
+
+}

bsnes/gba/cpu/cpu.hpp

@@ -0,0 +1,11 @@
+#include "core/core.hpp"
+
+struct CPU : Processor, ARM7TDMI {
+  static void Enter();
+  void enter();
+  void step(unsigned clocks);
+
+  void power();
+};
+
+extern CPU cpu;

bsnes/gba/gba.hpp

@@ -0,0 +1,61 @@
+#ifndef GBA_HPP
+#define GBA_HPP
+
+#include <base/base.hpp>
+
+namespace GBA {
+  namespace Info {
+    static const char Name[] = "bgba";
+    static const unsigned SerializerVersion = 1;
+  }
+}
+
+/*
+  bgba - Game Boy Advance emulator
+  author: byuu
+  license: GPLv3
+  project started: 2012-03-17
+*/
+
+#include <libco/libco.h>
+
+namespace GBA {
+  struct Processor {
+    cothread_t thread;
+    unsigned frequency;
+    signed clock;
+
+    inline void create(void (*entrypoint)(), unsigned frequency) {
+      if(thread) co_delete(thread);
+      thread = co_create(65536 * sizeof(void*), entrypoint);
+      this->frequency = frequency;
+      clock = 0;
+    }
+
+    inline void serialize(serializer &s) {
+      s.integer(frequency);
+      s.integer(clock);
+    }
+
+    inline Processor() : thread(nullptr) {
+    }
+
+    inline ~Processor() {
+      if(thread) co_delete(thread);
+    }
+  };
+
+  #include <gba/interface/interface.hpp>
+  #include <gba/system/system.hpp>
+  #include <gba/scheduler/scheduler.hpp>
+  #include <gba/cartridge/cartridge.hpp>
+  #include <gba/memory/memory.hpp>
+  #include <gba/cpu/cpu.hpp>
+  #include <gba/ppu/ppu.hpp>
+  #include <gba/apu/apu.hpp>
+  #include <gba/video/video.hpp>
+
+  #include <gba/scheduler/scheduler-inline.hpp>
+}
+
+#endif

bsnes/gba/interface/interface.cpp

@@ -0,0 +1,21 @@
+#include <gba/gba.hpp>
+
+namespace GBA {
+
+Interface *interface = nullptr;
+
+void Interface::videoRefresh(const uint16_t *data) {
+}
+
+void Interface::audioSample(int16_t lsample, int16_t rsample) {
+}
+
+bool Interface::inputPoll(unsigned id) {
+  return false;
+}
+
+void Interface::message(const string &text) {
+  print(text, "\n");
+}
+
+}

bsnes/gba/interface/interface.hpp

@@ -0,0 +1,9 @@
+struct Interface {
+  virtual void videoRefresh(const uint16_t *data);
+  virtual void audioSample(int16_t lsample, int16_t rsample);
+  virtual bool inputPoll(unsigned id);
+
+  virtual void message(const string &text);
+};
+
+extern Interface *interface;

bsnes/gba/memory/memory.cpp

@@ -0,0 +1,36 @@
+#include <gba/gba.hpp>
+
+#define MEMORY_CPP
+namespace GBA {
+
+Bus bus;
+
+uint8 Bus::read(unsigned addr) {
+  if((addr & 0x0fffc000) == 0x00000000) {
+    //00000000-00003fff  BIOS
+    return system.bios.data[addr & 0x3fff];
+  }
+
+  if((addr & 0x0e000000) == 0x08000000) {
+    //08000000-09ffffff  ROM (wait state 0)
+    return cartridge.romdata[addr & 0x01ffffff];
+  }
+
+  if((addr & 0x0e000000) == 0x0a000000) {
+    //0a000000-0bffffff  ROM (wait state 1)
+    return cartridge.romdata[addr & 0x01ffffff];
+  }
+
+  if((addr & 0x0e000000) == 0x0c000000) {
+    //0c000000-0dffffff  ROM (wait state 2)
+    return cartridge.romdata[addr & 0x01ffffff];
+  }
+
+  //unmapped
+  return 0u;
+}
+
+void Bus::write(unsigned addr, uint8 data) {
+}
+
+}

bsnes/gba/memory/memory.hpp

@@ -0,0 +1,6 @@
+struct Bus {
+  uint8 read(unsigned addr);
+  void write(unsigned addr, uint8 data);
+};
+
+extern Bus bus;

bsnes/gba/ppu/ppu.cpp

@@ -0,0 +1,38 @@
+#include <gba/gba.hpp>
+
+#define PPU_CPP
+namespace GBA {
+
+PPU ppu;
+
+void PPU::Enter() { ppu.enter(); }
+
+void PPU::enter() {
+  while(true) {
+  //scheduler.synchronize_all();
+
+    step(16777216);
+    static uint16_t buffer[240 * 160];
+    for(unsigned y = 0; y < 160; y++) {
+      uint16_t *dp = buffer + y * 240;
+      for(unsigned x = 0; x < 240; x++) {
+        *dp++ = x + y;
+      }
+    }
+    interface->videoRefresh(buffer);
+    scheduler.exit(Scheduler::ExitReason::FrameEvent);
+  }
+}
+
+void PPU::step(unsigned clocks) {
+  clock += clocks;
+  if(clock >= 0 && scheduler.sync != Scheduler::SynchronizeMode::All) {
+    co_switch(cpu.thread);
+  }
+}
+
+void PPU::power() {
+  create(PPU::Enter, 16777216);
+}
+
+}

bsnes/gba/ppu/ppu.hpp

@@ -0,0 +1,9 @@
+struct PPU : Processor {
+  static void Enter();
+  void enter();
+  void step(unsigned clocks);
+
+  void power();
+};
+
+extern PPU ppu;

bsnes/gba/scheduler/scheduler-inline.hpp

@@ -0,0 +1,17 @@
+void Scheduler::swapto(Processor &p) {
+  active_thread = p.thread;
+  co_switch(active_thread);
+}
+
+void Scheduler::synchronize_cpu() {
+  if(sync == SynchronizeMode::CPU) {
+    sync = SynchronizeMode::All;
+    exit(ExitReason::SynchronizeEvent);
+  }
+}
+
+void Scheduler::synchronize_all() {
+  if(sync == SynchronizeMode::All) {
+    exit(ExitReason::SynchronizeEvent);
+  }
+}

bsnes/gba/scheduler/scheduler.cpp

@@ -0,0 +1,31 @@
+#include <gba/gba.hpp>
+
+#define SCHEDULER_CPP
+namespace GBA {
+
+Scheduler scheduler;
+
+void Scheduler::enter() {
+  host_thread = co_active();
+  co_switch(active_thread);
+}
+
+void Scheduler::exit(ExitReason reason) {
+  exit_reason = reason;
+  active_thread = co_active();
+  co_switch(host_thread);
+}
+
+void Scheduler::power() {
+  host_thread = co_active();
+  active_thread = cpu.thread;
+}
+
+Scheduler::Scheduler() {
+  sync = SynchronizeMode::None;
+  exit_reason = ExitReason::UnknownEvent;
+  host_thread = nullptr;
+  active_thread = nullptr;
+}
+
+}

bsnes/gba/scheduler/scheduler.hpp

@@ -0,0 +1,19 @@
+struct Scheduler : property<Scheduler> {
+  enum class SynchronizeMode : unsigned { None, CPU, All } sync;
+  enum class ExitReason : unsigned { UnknownEvent, FrameEvent, SynchronizeEvent };
+  readonly<ExitReason> exit_reason;
+
+  cothread_t host_thread;
+  cothread_t active_thread;
+
+  void enter();
+  void exit(ExitReason);
+  alwaysinline void swapto(Processor&);
+  alwaysinline void synchronize_cpu();
+  alwaysinline void synchronize_all();
+
+  void power();
+  Scheduler();
+};
+
+extern Scheduler scheduler;

bsnes/gba/system/system.cpp

@@ -0,0 +1,53 @@
+#include <gba/gba.hpp>
+
+#define SYSTEM_CPP
+namespace GBA {
+
+System system;
+
+void System::BIOS::load(const uint8_t *newdata, unsigned newsize) {
+  if(data) delete[] data;
+  data = new uint8[size = newsize];
+  memcpy(data, newdata, newsize);
+
+  string sha256 = nall::sha256(data, size);
+  if(size != 16384 || sha256 != "fd2547724b505f487e6dcb29ec2ecff3af35a841a77ab2e85fd87350abd36570") {
+    interface->message("Warning: Game Boy Advance BIOS SHA256 sum is incorrect.");
+  }
+}
+
+System::BIOS::BIOS() {
+  data = nullptr;
+  size = 0u;
+}
+
+System::BIOS::~BIOS() {
+  delete[] data;
+}
+
+void System::run() {
+  scheduler.enter();
+}
+
+void System::init() {
+}
+
+void System::term() {
+}
+
+void System::load() {
+}
+
+void System::unload() {
+  cartridge.unload();
+}
+
+void System::power() {
+  cartridge.power();
+  cpu.power();
+  ppu.power();
+  apu.power();
+  scheduler.power();
+}
+
+}

bsnes/gba/system/system.hpp

@@ -0,0 +1,23 @@
+enum class Input : unsigned {
+  A, B, Select, Start, Right, Left, Up, Down, R, L,
+};
+
+struct System : property<System> {
+  struct BIOS {
+    uint8_t *data;
+    unsigned size;
+    void load(const uint8_t *data, unsigned size);
+    BIOS();
+    ~BIOS();
+  } bios;
+
+  void run();
+
+  void init();
+  void term();
+  void load();
+  void unload();
+  void power();
+};
+
+extern System system;

bsnes/gba/video/video.cpp

@@ -0,0 +1,53 @@
+#include <gba/gba.hpp>
+
+#define VIDEO_CPP
+namespace GBA {
+
+Video video;
+
+unsigned Video::color(unsigned color) const {
+  uint5_t b = color >> 10;
+  uint5_t g = color >>  5;
+  uint5_t r = color >>  0;
+
+  uint10_t R = (r << 5) | (r << 0);
+  uint10_t G = (g << 5) | (g << 0);
+  uint10_t B = (b << 5) | (b << 0);
+
+  return (R << 20) | (G << 10) | (B << 0);
+}
+
+void Video::generate(Format format) {
+  for(unsigned n = 0; n < (1 << 15); n++) palette[n] = color(n);
+
+  if(format == Format::RGB24) {
+    for(unsigned n = 0; n < (1 << 15); n++) {
+      unsigned color = palette[n];
+      palette[n] = ((color >> 6) & 0xff0000) + ((color >> 4) & 0x00ff00) + ((color >> 2) & 0x0000ff);
+    }
+  }
+
+  if(format == Format::RGB16) {
+    for(unsigned n = 0; n < (1 << 15); n++) {
+      unsigned color = palette[n];
+      palette[n] = ((color >> 14) & 0xf800) + ((color >> 9) & 0x07e0) + ((color >> 5) & 0x001f);
+    }
+  }
+
+  if(format == Format::RGB15) {
+    for(unsigned n = 0; n < (1 << 15); n++) {
+      unsigned color = palette[n];
+      palette[n] = ((color >> 15) & 0x7c00) + ((color >> 10) & 0x03e0) + ((color >> 5) & 0x001f);
+    }
+  }
+}
+
+Video::Video() {
+  palette = new unsigned[1 << 15]();
+}
+
+Video::~Video() {
+  delete[] palette;
+}
+
+}

bsnes/gba/video/video.hpp

@@ -0,0 +1,11 @@
+struct Video {
+  enum class Format : unsigned { RGB30, RGB24, RGB16, RGB15 };
+  unsigned *palette;
+
+  unsigned color(unsigned color) const;
+  void generate(Format format);
+  Video();
+  ~Video();
+};
+
+extern Video video;

bsnes/target-ui/Makefile

@@ -1,6 +1,7 @@
 include $(nes)/Makefile
-include $(gameboy)/Makefile
 include $(snes)/Makefile
+include $(gameboy)/Makefile
+include $(gba)/Makefile
 name := bsnes
 
 ui_objects := ui-main ui-config ui-interface ui-input ui-utility

bsnes/target-ui/base.hpp

@@ -1,6 +1,7 @@
 #include <nes/nes.hpp>
-#include <gameboy/gameboy.hpp>
 #include <snes/snes.hpp>
+#include <gameboy/gameboy.hpp>
+#include <gba/gba.hpp>
 
 #include <nall/compositor.hpp>
 #include <nall/config.hpp>

bsnes/target-ui/config/config.cpp

@@ -2,49 +2,50 @@
 Config *config = nullptr;
 
 Config::Config() {
-  attach(video.driver = "", "Video::Driver");
-  attach(video.filter = "None", "Video::Filter");
-  attach(video.shader = "Blur", "Video::Shader");
-  attach(video.synchronize = true, "Video::Synchronize");
-  attach(video.correctAspectRatio = true, "Video::CorrectAspectRatio");
+  append(video.driver = "", "Video::Driver");
+  append(video.filter = "None", "Video::Filter");
+  append(video.shader = "Blur", "Video::Shader");
+  append(video.synchronize = true, "Video::Synchronize");
+  append(video.correctAspectRatio = true, "Video::CorrectAspectRatio");
 
-  attach(video.maskOverscan = false, "Video::MaskOverscan");
-  attach(video.maskOverscanHorizontal = 8, "Video::MaskOverscanHorizontal");
-  attach(video.maskOverscanVertical = 8, "Video::MaskOverscanVertical");
+  append(video.maskOverscan = false, "Video::MaskOverscan");
+  append(video.maskOverscanHorizontal = 8, "Video::MaskOverscanHorizontal");
+  append(video.maskOverscanVertical = 8, "Video::MaskOverscanVertical");
 
-  attach(video.brightness = 100, "Video::Brightness");
-  attach(video.contrast = 100, "Video::Contrast");
-  attach(video.gamma = 50, "Video::Gamma");
+  append(video.brightness = 100, "Video::Brightness");
+  append(video.contrast = 100, "Video::Contrast");
+  append(video.gamma = 50, "Video::Gamma");
 
-  attach(video.fullScreenMode = 0, "Video::FullScreenMode");
+  append(video.fullScreenMode = 0, "Video::FullScreenMode");
 
-  attach(video.startFullScreen = false, "Video::StartFullScreen");
-  attach(video.compositionMode = 0, "Video::CompositionMode");
+  append(video.startFullScreen = false, "Video::StartFullScreen");
+  append(video.compositionMode = 0, "Video::CompositionMode");
 
-  attach(audio.driver = "", "Audio::Driver");
-  attach(audio.synchronize = true, "Audio::Synchronize");
-  attach(audio.mute = false, "Audio::Mute");
-  attach(audio.volume = 100, "Audio::Volume");
-  attach(audio.latency = 60, "Audio::Latency");
-  attach(audio.resampler = "sinc", "Audio::Resampler");
+  append(audio.driver = "", "Audio::Driver");
+  append(audio.synchronize = true, "Audio::Synchronize");
+  append(audio.mute = false, "Audio::Mute");
+  append(audio.volume = 100, "Audio::Volume");
+  append(audio.latency = 60, "Audio::Latency");
+  append(audio.resampler = "sinc", "Audio::Resampler");
 
-  attach(audio.frequency = 48000, "Audio::Frequency::Native");
-  attach(audio.frequencyNES = 1789772, "Audio::Frequency::NES");
-  attach(audio.frequencySNES = 32000, "Audio::Frequency::SNES");
-  attach(audio.frequencyGameBoy = 4194304, "Audio::Frequency::GameBoy");
+  append(audio.frequency = 48000, "Audio::Frequency::Native");
+  append(audio.frequencyNES = 1789772, "Audio::Frequency::NES");
+  append(audio.frequencySNES = 32000, "Audio::Frequency::SNES");
+  append(audio.frequencyGameBoy = 4194304, "Audio::Frequency::GameBoy");
+  append(audio.frequencyGBA = 32768, "Audio::Frequency::GBA");
 
-  attach(input.driver = "", "Input::Driver");
-  attach(input.focusPolicy = 1, "Input::FocusPolicy");
+  append(input.driver = "", "Input::Driver");
+  append(input.focusPolicy = 1, "Input::FocusPolicy");
 
-  attach(path.bios.satellaview = "", "Path::BIOS::Satellaview");
-  attach(path.bios.sufamiTurbo = "", "Path::BIOS::SufamiTurbo");
-  attach(path.bios.superGameBoy = "", "Path::BIOS::SuperGameBoy");
+  append(path.bios.satellaview = "", "Path::BIOS::Satellaview");
+  append(path.bios.sufamiTurbo = "", "Path::BIOS::SufamiTurbo");
+  append(path.bios.superGameBoy = "", "Path::BIOS::SuperGameBoy");
 
-  attach(nes.controllerPort1Device = 1, "NES::Controller::Port1");
-  attach(nes.controllerPort2Device = 0, "NES::Controller::Port2");
+  append(nes.controllerPort1Device = 1, "NES::Controller::Port1");
+  append(nes.controllerPort2Device = 0, "NES::Controller::Port2");
 
-  attach(snes.controllerPort1Device = 1, "SNES::Controller::Port1");
-  attach(snes.controllerPort2Device = 0, "SNES::Controller::Port2");
+  append(snes.controllerPort1Device = 1, "SNES::Controller::Port1");
+  append(snes.controllerPort2Device = 0, "SNES::Controller::Port2");
 
   load(application->path("settings.cfg"));
   save(application->path("settings.cfg"));

bsnes/target-ui/config/config.hpp

@@ -34,6 +34,7 @@ struct Config : public configuration {
     unsigned frequencyNES;
     unsigned frequencySNES;
     unsigned frequencyGameBoy;
+    unsigned frequencyGBA;
   } audio;
 
   struct Input {

bsnes/target-ui/general/file-browser.cpp

@@ -42,13 +42,14 @@ FileBrowser::FileBrowser() {
   fileList.onChange = { &FileBrowser::synchronize, this };
   fileList.onActivate = openButton.onActivate = { &FileBrowser::fileListActivate, this };
 
-  filterModes.append({ "Default",      "", { "*" } });
-  filterModes.append({ "NES",          "", { "*.fc", "*.nes" } });
-  filterModes.append({ "SNES",         "", { "*.sfc" } });
-  filterModes.append({ "GameBoy",      "", { "*.gb", "*.gbc" } });
-  filterModes.append({ "GameBoyColor", "", { "*.gbc" } });
-  filterModes.append({ "Satellaview",  "", { "*.bs" } });
-  filterModes.append({ "SufamiTurbo",  "", { "*.st" } });
+  filterModes.append({ "Default",        "", { "*" } });
+  filterModes.append({ "NES",            "", { "*.fc", "*.nes" } });
+  filterModes.append({ "SNES",           "", { "*.sfc" } });
+  filterModes.append({ "GameBoy",        "", { "*.gb", "*.gbc" } });
+  filterModes.append({ "GameBoyColor",   "", { "*.gbc" } });
+  filterModes.append({ "GameBoyAdvance", "", { "*.gba" } });
+  filterModes.append({ "Satellaview",    "", { "*.bs" } });
+  filterModes.append({ "SufamiTurbo",    "", { "*.st" } });
   mode = &filterModes[Mode::Default];
 
   for(auto &mode : filterModes) config.attach(mode.path, mode.name);

bsnes/target-ui/general/file-browser.hpp

@@ -9,7 +9,16 @@ struct FileBrowser : Window {
   Label filterLabel;
   Button openButton;
 
-  struct Mode { enum : unsigned { Default, NES, SNES, GameBoy, GameBoyColor, Satellaview, SufamiTurbo }; };
+  struct Mode { enum : unsigned {
+    Default,
+    NES,
+    SNES,
+    GameBoy,
+    GameBoyColor,
+    GameBoyAdvance,
+    Satellaview,
+    SufamiTurbo
+  }; };
   void open(const string &title, unsigned mode, function<void (string)> callback);
 
   FileBrowser();

bsnes/target-ui/general/main-window.cpp

@@ -11,6 +11,7 @@ MainWindow::MainWindow() {
     cartridgeLoadNES.setText("Load &NES Cartridge ...");
     cartridgeLoadGameBoy.setText("Load &Game Boy Cartridge ...");
     cartridgeLoadGameBoyColor.setText("Load Game Boy &Color Cartridge ...");
+    cartridgeLoadGameBoyAdvance.setText("Load Game Boy &Advance Cartridge ...");
     cartridgeLoadSatellaviewSlotted.setText("Load Satellaview-Slotted Cartridge ...");
     cartridgeLoadSatellaview.setText("Load Satellaview Cartridge ...");
     cartridgeLoadSufamiTurbo.setText("Load Sufami Turbo Cartridge ...");
@@ -103,6 +104,7 @@ MainWindow::MainWindow() {
     cartridgeMenu.append(cartridgeLoadSNES);
     cartridgeMenu.append(cartridgeLoadGameBoy);
     cartridgeMenu.append(cartridgeLoadGameBoyColor);
+    cartridgeMenu.append(cartridgeLoadGameBoyAdvance);
     cartridgeMenu.append(cartridgeSeparator);
     cartridgeMenu.append(cartridgeLoadSatellaviewSlotted);
     cartridgeMenu.append(cartridgeLoadSatellaview);
@@ -215,6 +217,12 @@ MainWindow::MainWindow() {
     });
   };
 
+  cartridgeLoadGameBoyAdvance.onActivate = [&] {
+    fileBrowser->open("Load Cartridge - Game Boy Advance", FileBrowser::Mode::GameBoyAdvance, [](string filename) {
+      interface->gba.loadCartridge(filename);
+    });
+  };
+
   cartridgeLoadSatellaviewSlotted.onActivate = [&] { slotLoader->loadSatellaviewSlotted(); };
   cartridgeLoadSatellaview.onActivate        = [&] { slotLoader->loadSatellaview(); };
   cartridgeLoadSufamiTurbo.onActivate        = [&] { slotLoader->loadSufamiTurbo(); };

bsnes/target-ui/general/main-window.hpp

@@ -7,6 +7,7 @@ struct MainWindow : Window {
     Item cartridgeLoadNES;
     Item cartridgeLoadGameBoy;
     Item cartridgeLoadGameBoyColor;
+    Item cartridgeLoadGameBoyAdvance;
     Separator cartridgeSeparator;
     Item cartridgeLoadSatellaviewSlotted;
     Item cartridgeLoadSatellaview;

bsnes/target-ui/input/gba.cpp

@@ -0,0 +1,62 @@
+int16_t GbaController::poll(unsigned n) {
+  switch((GBA::Input)n) {
+  case GBA::Input::Up: return up.poll() & !down.poll();
+  case GBA::Input::Down: return down.poll() & !up.poll();
+  case GBA::Input::Left: return left.poll() & !right.poll();
+  case GBA::Input::Right: return right.poll() & !left.poll();
+  case GBA::Input::B: return b.poll() | bTurbo.poll();
+  case GBA::Input::A: return a.poll() | aTurbo.poll();
+  case GBA::Input::L: return l.poll() | lTurbo.poll();
+  case GBA::Input::R: return r.poll() | rTurbo.poll();
+  case GBA::Input::Select: return select.poll();
+  case GBA::Input::Start: return start.poll();
+  }
+  return 0;  //never reached
+}
+
+GbaController::GbaController() {
+  name = "Controller";
+
+  up.name = "Up";
+  down.name = "Down";
+  left.name = "Left";
+  right.name = "Right";
+  b.name = "B";
+  a.name = "A";
+  l.name = "L";
+  r.name = "R";
+  select.name = "Select";
+  start.name = "Start";
+  bTurbo.name = "Turbo B";
+  aTurbo.name = "Turbo A";
+  lTurbo.name = "Turbo L";
+  rTurbo.name = "Turbo R";
+
+  up.mapping = "KB0::Up";
+  down.mapping = "KB0::Down";
+  left.mapping = "KB0::Left";
+  right.mapping = "KB0::Right";
+  b.mapping = "KB0::Z";
+  a.mapping = "KB0::X";
+  l.mapping = "KB0::A";
+  r.mapping = "KB0::S";
+  select.mapping = "KB0::Apostrophe";
+  start.mapping = "KB0::Return";
+
+  append(up, down, left, right, b, a, l, r, select, start);
+  append(bTurbo, aTurbo, lTurbo, rTurbo);
+}
+
+//
+
+GbaDevice::GbaDevice() {
+  name = "Device";
+  append(controller);
+}
+
+//
+
+GbaInput::GbaInput() {
+  name = "Game Boy Advance";
+  append(device);
+}

bsnes/target-ui/input/gba.hpp

@@ -0,0 +1,20 @@
+struct GbaController : TertiaryInput {
+  DigitalInput up, down, left, right;
+  DigitalInput b, a, l, r, select, start;
+  TurboInput bTurbo, aTurbo, lTurbo, rTurbo;
+
+  int16_t poll(unsigned n);
+  GbaController();
+};
+
+struct GbaDevice : SecondaryInput {
+  GbaController controller;
+
+  GbaDevice();
+};
+
+struct GbaInput : PrimaryInput {
+  GbaDevice device;
+
+  GbaInput();
+};

bsnes/target-ui/input/input.cpp

@@ -2,6 +2,7 @@
 #include "nes.cpp"
 #include "snes.cpp"
 #include "gameboy.cpp"
+#include "gba.cpp"
 #include "user-interface.cpp"
 InputManager *inputManager = nullptr;
 
@@ -200,6 +201,7 @@ InputManager::InputManager() {
   inputList.append(nes);
   inputList.append(snes);
   inputList.append(gameBoy);
+  inputList.append(gba);
   inputList.append(userInterface);
 
   for(unsigned n = 0; n < inputList.size(); n++) inputList[n].attach();

bsnes/target-ui/input/input.hpp

@@ -52,6 +52,7 @@ struct PrimaryInput : array<SecondaryInput&> {
 #include "nes.hpp"
 #include "snes.hpp"
 #include "gameboy.hpp"
+#include "gba.hpp"
 #include "user-interface.hpp"
 
 struct InputManager {
@@ -63,6 +64,7 @@ struct InputManager {
   NesInput nes;
   SnesInput snes;
   GameBoyInput gameBoy;
+  GbaInput gba;
   UserInterfaceInput userInterface;
 
   void scan();

bsnes/target-ui/interface/gba/gba.cpp

@@ -0,0 +1,110 @@
+void InterfaceGBA::initialize() {
+  GBA::interface = this;
+  GBA::system.init();
+}
+
+bool InterfaceGBA::cartridgeLoaded() {
+  return GBA::cartridge.loaded();
+}
+
+bool InterfaceGBA::loadCartridge(const string &filename) {
+  interface->unloadCartridge();
+
+  uint8_t *biosdata;
+  unsigned biossize;
+
+  uint8_t *cartdata;
+  unsigned cartsize;
+
+  if(filename.endswith("/")) {
+    if(!file::exists({filename, "bios.rom"})) {
+      message("Error: Game Boy Advance BIOS (bios.bin) not found.");
+      return false;
+    }
+    if(file::read({filename, "bios.rom"}, biosdata, biossize) == false) return false;
+    if(file::read({filename, "program.rom"}, cartdata, cartsize) == false) return false;
+    interface->base = {true, filename};
+  } else {
+    if(!file::exists({dir(filename), "gbabios.rom"})) {
+      message("Error: Game Boy Advance BIOS (gbabios.bin) not found.");
+      return false;
+    }
+    if(file::read({dir(filename), "gbabios.rom"}, biosdata, biossize) == false) return false;
+    if(file::read(filename, cartdata, cartsize) == false) return false;
+    interface->base = {false, filename};
+  }
+
+  interface->game = interface->base;
+  interface->cartridgeTitle = interface->base.title();
+  interface->applyPatch(interface->base, cartdata, cartsize);
+
+  string markup;
+  markup.readfile(interface->base.filename("manifest.xml", ".xml"));
+
+  GBA::system.bios.load(biosdata, biossize);
+  GBA::cartridge.load(markup, cartdata, cartsize);
+  GBA::system.power();
+  delete[] biosdata;
+  delete[] cartdata;
+
+  GBA::video.generate(GBA::Video::Format::RGB30);
+  interface->loadCartridge(::Interface::Mode::GBA);
+  return true;
+}
+
+void InterfaceGBA::unloadCartridge() {
+  GBA::system.unload();
+}
+
+void InterfaceGBA::power() {
+  GBA::system.power();
+}
+
+void InterfaceGBA::reset() {
+  GBA::system.power();  //GBA lacks reset button
+}
+
+void InterfaceGBA::run() {
+  GBA::system.run();
+}
+
+serializer InterfaceGBA::serialize() {
+  return serializer();
+}
+
+bool InterfaceGBA::unserialize(serializer &s) {
+  return false;
+}
+
+void InterfaceGBA::setCheats(const lstring &list) {
+}
+
+//
+
+void InterfaceGBA::videoRefresh(const uint16_t *data) {
+  static uint32_t output[240 * 160];
+
+  for(unsigned y = 0; y < 160; y++) {
+    const uint16_t *sp = data + y * 240;
+    uint32_t *dp = output + y * 240;
+    for(unsigned x = 0; x < 240; x++) {
+      uint16_t color = *sp++;
+      *dp++ = GBA::video.palette[color];
+    }
+  }
+
+  interface->videoRefresh(output, 240 * sizeof(uint32_t), 240, 160);
+}
+
+void InterfaceGBA::audioSample(int16_t lsample, int16_t rsample) {
+  signed samples[] = { lsample, rsample };
+  dspaudio.sample(samples);
+  while(dspaudio.pending()) {
+    dspaudio.read(samples);
+    audio.sample(samples[0], samples[1]);
+  }
+}
+
+bool InterfaceGBA::inputPoll(unsigned id) {
+  return inputManager->gba.device.controller.poll(id);
+}

bsnes/target-ui/interface/gba/gba.hpp

@@ -0,0 +1,20 @@
+struct InterfaceGBA : InterfaceCore, GBA::Interface {
+  void initialize();
+
+  bool cartridgeLoaded();
+  bool loadCartridge(const string &filename);
+  void unloadCartridge();
+
+  void power();
+  void reset();
+  void run();
+
+  serializer serialize();
+  bool unserialize(serializer&);
+
+  void setCheats(const lstring &list = lstring{});
+
+  void videoRefresh(const uint16_t *data);
+  void audioSample(int16_t lsample, int16_t rsample);
+  bool inputPoll(unsigned id);
+};

bsnes/target-ui/interface/interface.cpp

@@ -3,6 +3,7 @@
 #include "nes/nes.cpp"
 #include "snes/snes.cpp"
 #include "gameboy/gameboy.cpp"
+#include "gba/gba.cpp"
 Interface *interface = nullptr;
 
 Filter filter;
@@ -74,6 +75,7 @@ void Interface::updateDSP() {
   case Mode::NES:     return dspaudio.setFrequency(config->audio.frequencyNES);
   case Mode::SNES:    return dspaudio.setFrequency(config->audio.frequencySNES);
   case Mode::GameBoy: return dspaudio.setFrequency(config->audio.frequencyGameBoy);
+  case Mode::GBA:     return dspaudio.setFrequency(config->audio.frequencyGBA);
   }
 }
 
@@ -82,6 +84,7 @@ bool Interface::cartridgeLoaded() {
   case Mode::NES:     return nes.cartridgeLoaded();
   case Mode::SNES:    return snes.cartridgeLoaded();
   case Mode::GameBoy: return gameBoy.cartridgeLoaded();
+  case Mode::GBA:     return gba.cartridgeLoaded();
   }
   return false;
 }
@@ -92,6 +95,7 @@ void Interface::loadCartridge(Mode mode) {
   case Mode::NES: core = &nes; break;
   case Mode::SNES: core = &snes; break;
   case Mode::GameBoy: core = &gameBoy; break;
+  case Mode::GBA: core = &gba; break;
   default: core = nullptr; break;
   }
 
@@ -124,6 +128,7 @@ void Interface::unloadCartridge() {
   case Mode::NES:     nes.unloadCartridge(); break;
   case Mode::SNES:    snes.unloadCartridge(); break;
   case Mode::GameBoy: gameBoy.unloadCartridge(); break;
+  case Mode::GBA:     gba.unloadCartridge(); break;
   }
 
   cartridgeTitle = "";
@@ -184,6 +189,7 @@ void Interface::setCheatCodes(const lstring &list) {
   case Mode::NES:     return nes.setCheats(list);
   case Mode::SNES:    return snes.setCheats(list);
   case Mode::GameBoy: return gameBoy.setCheats(list);
+  case Mode::GBA:     return gba.setCheats(list);
   }
 }
 
@@ -192,6 +198,7 @@ string Interface::sha256() {
   case Mode::NES:     return NES::cartridge.sha256();
   case Mode::SNES:    return SNES::cartridge.sha256();
   case Mode::GameBoy: return GameBoy::cartridge.sha256();
+  case Mode::GBA:     return GBA::cartridge.sha256();
   }
   return "{None}";
 }
@@ -201,6 +208,7 @@ Interface::Interface() : core(nullptr) {
   nes.initialize();
   snes.initialize();
   gameBoy.initialize();
+  gba.initialize();
 }
 
 //internal

bsnes/target-ui/interface/interface.hpp

@@ -19,6 +19,7 @@ struct CartridgePath {
 #include "nes/nes.hpp"
 #include "snes/snes.hpp"
 #include "gameboy/gameboy.hpp"
+#include "gba/gba.hpp"
 
 struct Filter : public library {
   function<void (unsigned&, unsigned&)> dl_size;
@@ -36,7 +37,7 @@ struct Filter : public library {
 extern Filter filter;
 
 struct Interface : property<Interface> {
-  enum class Mode : unsigned { None, SNES, NES, GameBoy };
+  enum class Mode : unsigned { None, SNES, NES, GameBoy, GBA };
   readonly<Mode> mode;
 
   void bindControllers();
@@ -74,6 +75,7 @@ struct Interface : property<Interface> {
   InterfaceNES nes;
   InterfaceSNES snes;
   InterfaceGameBoy gameBoy;
+  InterfaceGBA gba;
 };
 
 extern Interface *interface;

bsnes/target-ui/main.cpp

@@ -125,6 +125,7 @@ Application::Application(int argc, char **argv) {
 
   interface->unloadCartridge();
   windowManager->saveGeometry();
+  windowManager->hideAll();
   if(compositionEnable) compositor::enable(true);
 }
 

bsnes/target-ui/settings/audio.cpp

@@ -68,6 +68,11 @@ AudioSettings::AudioSettings() {
   gameBoy.base = 4194304;
   gameBoy.step = 131;
 
+  gba.name.setText("GBA:");
+  gba.slider.setLength(2001);
+  gba.base = 32768;
+  gba.step = 1;
+
   append(title,                           { ~0, 0 }, 5);
   append(outputLabel,                     { ~0, 0 }, 0);
   append(outputLayout,                    { ~0, 0 }, 5);
@@ -82,6 +87,7 @@ AudioSettings::AudioSettings() {
   append(nes,                             { ~0, 0 }, 0);
   append(snes,                            { ~0, 0 }, 0);
   append(gameBoy,                         { ~0, 0 }, 0);
+  append(gba,                             { ~0, 0 }, 0);
 
   frequencySelection.setSelection(
     config->audio.frequency == 32000 ? 0 :
@@ -109,9 +115,10 @@ AudioSettings::AudioSettings() {
   nes.setPosition(config->audio.frequencyNES);
   snes.setPosition(config->audio.frequencySNES);
   gameBoy.setPosition(config->audio.frequencyGameBoy);
+  gba.setPosition(config->audio.frequencyGBA);
 
-  frequencySelection.onChange = latencySelection.onChange = resamplerSelection.onChange =
-  volume.slider.onChange = nes.slider.onChange = snes.slider.onChange = gameBoy.slider.onChange =
+  frequencySelection.onChange = latencySelection.onChange = resamplerSelection.onChange = volume.slider.onChange =
+  nes.slider.onChange = snes.slider.onChange = gameBoy.slider.onChange = gba.slider.onChange =
   { &AudioSettings::synchronize, this };
 
   synchronize();
@@ -141,10 +148,12 @@ void AudioSettings::synchronize() {
   config->audio.frequencyNES = nes.position();
   config->audio.frequencySNES = snes.position();
   config->audio.frequencyGameBoy = gameBoy.position();
+  config->audio.frequencyGBA = gba.position();
 
   nes.value.setText({ nes.position(), "hz" });
   snes.value.setText({ snes.position(), "hz" });
   gameBoy.value.setText({ gameBoy.position(), "hz" });
+  gba.value.setText({ gba.position(), "hz" });
   volume.value.setText({ volume.position(), "%" });
 
   interface->updateDSP();

bsnes/target-ui/settings/audio.hpp

@@ -26,6 +26,7 @@ struct AudioSettings : SettingsLayout {
   AudioSlider nes;
   AudioSlider snes;
   AudioSlider gameBoy;
+  AudioSlider gba;
 
   void synchronize();
   AudioSettings();

bsnes/target-ui/utility/utility.cpp

@@ -37,6 +37,11 @@ void Utility::setMode(Interface::Mode mode) {
     dspaudio.setChannels(2);
   }
 
+  else if(mode == Interface::Mode::GBA) {
+    mainWindow->setTitle(interface->cartridgeTitle);
+    dspaudio.setChannels(2);
+  }
+
   interface->updateDSP();
   mainWindow->synchronize();
   resizeMainWindow();
@@ -51,6 +56,7 @@ void Utility::resizeMainWindow(bool shrink) {
   case Interface::Mode::NES:     width = 256, height = 240; break;
   case Interface::Mode::SNES:    width = 256, height = 240; break;
   case Interface::Mode::GameBoy: width = 160, height = 144; break;
+  case Interface::Mode::GBA:     width = 240, height = 160; break;
   }
 
   if(config->video.correctAspectRatio) {

bsnes/target-ui/window/window.cpp

@@ -44,3 +44,9 @@ void WindowManager::saveGeometry() {
   }
   config.save(application->path("geometry.cfg"));
 }
+
+void WindowManager::hideAll() {
+  for(auto &window : windowList) {
+    window.window->setVisible(false);
+  }
+}

bsnes/target-ui/window/window.hpp

@@ -13,6 +13,7 @@ struct WindowManager {
 
   void loadGeometry();
   void saveGeometry();
+  void hideAll();
 
 private:
   configuration config;