feat: implement cartridge v1 loader and contract

Cargo.lock

@@ -746,6 +746,12 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
+
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -1467,6 +1473,10 @@ checksum = "3eb8486b569e12e2c32ad3e204dbaba5e4b5b216e9367044f25f1dba42341773"
 [[package]]
 name = "prometeu-core"
 version = "0.1.0"
+dependencies = [
+ "serde",
+ "serde_json",
+]
 
 [[package]]
 name = "quick-xml"
@@ -1671,6 +1681,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
 dependencies = [
  "serde_core",
+ "serde_derive",
 ]
 
 [[package]]
@@ -1693,6 +1704,19 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.149"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
+dependencies = [
+ "itoa",
+ "memchr",
+ "serde",
+ "serde_core",
+ "zmij",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -2661,3 +2685,9 @@ dependencies = [
  "quote",
  "syn 2.0.114",
 ]
+
+[[package]]
+name = "zmij"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd8f3f50b848df28f887acb68e41201b5aea6bc8a8dacc00fb40635ff9a72fea"

cart-test/manifest.json

@@ -0,0 +1,9 @@
+{
+  "magic": "PMTU",
+  "cartridge_version": 1,
+  "app_id": 1234,
+  "title": "Cart de Teste",
+  "app_version": "1.0.0",
+  "app_mode": "Invalid",
+  "entrypoint": "0"
+}

crates/host-desktop/src/main.rs

@@ -37,15 +37,30 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let args: Vec<String> = std::env::args().collect();
     let mut fs_root = None;
     let mut cap_config = None;
+    let mut cartridge_path = None;
 
-    let mut i = 0;
+    let mut i = 1; // Pula o nome do executável
     while i < args.len() {
-        if args[i] == "--fs-root" && i + 1 < args.len() {
-            fs_root = Some(args[i + 1].clone());
-            i += 1;
-        } else if args[i] == "--cap" && i + 1 < args.len() {
-            cap_config = load_cap_config(&args[i + 1]);
-            i += 1;
+        match args[i].as_str() {
+            "run" => {
+                if i + 1 < args.len() {
+                    cartridge_path = Some(args[i + 1].clone());
+                    i += 1;
+                }
+            }
+            "--fs-root" => {
+                if i + 1 < args.len() {
+                    fs_root = Some(args[i + 1].clone());
+                    i += 1;
+                }
+            }
+            "--cap" => {
+                if i + 1 < args.len() {
+                    cap_config = load_cap_config(&args[i + 1]);
+                    i += 1;
+                }
+            }
+            _ => {}
         }
         i += 1;
     }
@@ -53,6 +68,17 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let event_loop = EventLoop::new()?;
 
     let mut runner = PrometeuRunner::new(fs_root, cap_config);
+
+    if let Some(path) = cartridge_path {
+        match runner.load_cartridge(&path) {
+            Ok(_) => println!("Cartridge loaded: {}", path),
+            Err(e) => {
+                eprintln!("Failed to load cartridge: {:?}", e);
+                return Ok(());
+            }
+        }
+    }
+
     event_loop.run_app(&mut runner)?;
 
     Ok(())

crates/host-desktop/src/prometeu_runner.rs

@@ -17,6 +17,7 @@ use winit::event_loop::{ActiveEventLoop, ControlFlow};
 use winit::keyboard::{KeyCode, PhysicalKey};
 use winit::window::{Window, WindowAttributes, WindowId};
 
+use prometeu_core::model::{CartridgeError, CartridgeLoader};
 use prometeu_core::telemetry::CertificationConfig;
 
 pub struct PrometeuRunner {
@@ -50,6 +51,12 @@ pub struct PrometeuRunner {
 }
 
 impl PrometeuRunner {
+    pub(crate) fn load_cartridge(&mut self, path: &str) -> Result<(), CartridgeError> {
+        let cartridge = CartridgeLoader::load(path)?;
+        self.firmware.load_cartridge(cartridge);
+        Ok(())
+    }
+
     pub(crate) fn new(fs_root: Option<String>, cap_config: Option<CertificationConfig>) -> Self {
         let target_fps = 60;
 

crates/prometeu-core/Cargo.toml

@@ -3,4 +3,6 @@ name = "prometeu-core"
 version = "0.1.0"
 edition = "2024"
 
-[dependencies]
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"

crates/prometeu-core/src/firmware/firmware_step_load_cartridge.rs

@@ -10,14 +10,14 @@ pub struct LoadCartridgeStep {
 
 impl LoadCartridgeStep {
     pub fn on_enter(&mut self, ctx: &mut PrometeuContext) {
-        ctx.os.log(LogLevel::Info, LogSource::Pos, 0, format!("Loading cartridge: {}", self.cartridge.header.title));
+        ctx.os.log(LogLevel::Info, LogSource::Pos, 0, format!("Loading cartridge: {}", self.cartridge.title));
         ctx.os.initialize_vm(ctx.vm, &self.cartridge);
     }
 
     pub fn on_update(&mut self, ctx: &mut PrometeuContext) -> Option<FirmwareState> {
-        if self.cartridge.header.mode == AppMode::System {
+        if self.cartridge.app_mode == AppMode::System {
             let id = ctx.hub.window_manager.add_window(
-                self.cartridge.header.title.clone(),
+                self.cartridge.title.clone(),
                 Rect { x: 40, y: 20, w: 240, h: 140 },
                 Color::WHITE
             );

crates/prometeu-core/src/model/cartridge.rs

@@ -1,29 +1,40 @@
-use crate::virtual_machine::Program;
+use std::path::PathBuf;
+use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize, Serialize)]
 pub enum AppMode {
     Game,
     System,
 }
 
 #[derive(Debug, Clone)]
-pub struct AppHeader {
-    pub mode: AppMode,
-    pub app_id: String,
-    pub magic: u32,
-    pub version: u16,
-    pub title: String,
-    pub entrypoint: u32,
-}
-
-#[derive(Clone, Debug)]
 pub struct Cartridge {
-    pub header: AppHeader,
-    pub program: Program,
+    pub app_id: u32,
+    pub title: String,
+    pub app_version: String,
+    pub app_mode: AppMode,
+    pub entrypoint: String,
+    pub program: Vec<u8>,
+    pub assets_path: Option<PathBuf>,
 }
 
-impl Cartridge {
-    pub fn new(header: AppHeader, program: Program) -> Self {
-        Self { header, program }
-    }
+#[derive(Debug)]
+pub enum CartridgeError {
+    NotFound,
+    InvalidFormat,
+    InvalidManifest,
+    UnsupportedVersion,
+    MissingProgram,
+    IoError,
+}
+
+#[derive(Deserialize)]
+pub struct CartridgeManifest {
+    pub magic: String,
+    pub cartridge_version: u32,
+    pub app_id: u32,
+    pub title: String,
+    pub app_version: String,
+    pub app_mode: AppMode,
+    pub entrypoint: String,
 }

crates/prometeu-core/src/model/cartridge_loader.rs

@@ -0,0 +1,77 @@
+use std::fs;
+use std::path::Path;
+use crate::model::cartridge::{Cartridge, CartridgeError, CartridgeManifest};
+
+pub struct CartridgeLoader;
+
+impl CartridgeLoader {
+    pub fn load(path: impl AsRef<Path>) -> Result<Cartridge, CartridgeError> {
+        let path = path.as_ref();
+        if !path.exists() {
+            return Err(CartridgeError::NotFound);
+        }
+
+        if path.is_dir() {
+            DirectoryCartridgeLoader::load(path)
+        } else if path.extension().is_some_and(|ext| ext == "pmc") {
+            PackedCartridgeLoader::load(path)
+        } else {
+            Err(CartridgeError::InvalidFormat)
+        }
+    }
+}
+
+pub struct DirectoryCartridgeLoader;
+
+impl DirectoryCartridgeLoader {
+    pub fn load(path: &Path) -> Result<Cartridge, CartridgeError> {
+        let manifest_path = path.join("manifest.json");
+        if !manifest_path.exists() {
+            return Err(CartridgeError::InvalidManifest);
+        }
+
+        let manifest_content = fs::read_to_string(manifest_path).map_err(|_| CartridgeError::IoError)?;
+        let manifest: CartridgeManifest = serde_json::from_str(&manifest_content).map_err(|_| CartridgeError::InvalidManifest)?;
+
+        // Validação adicional conforme requisitos
+        if manifest.magic != "PMTU" {
+            return Err(CartridgeError::InvalidManifest);
+        }
+        if manifest.cartridge_version != 1 {
+            return Err(CartridgeError::UnsupportedVersion);
+        }
+
+        let program_path = path.join("program.pbc");
+        if !program_path.exists() {
+            return Err(CartridgeError::MissingProgram);
+        }
+
+        let program = fs::read(program_path).map_err(|_| CartridgeError::IoError)?;
+
+        let assets_path = path.join("assets");
+        let assets_path = if assets_path.exists() && assets_path.is_dir() {
+            Some(assets_path)
+        } else {
+            None
+        };
+
+        Ok(Cartridge {
+            app_id: manifest.app_id,
+            title: manifest.title,
+            app_version: manifest.app_version,
+            app_mode: manifest.app_mode,
+            entrypoint: manifest.entrypoint,
+            program,
+            assets_path,
+        })
+    }
+}
+
+pub struct PackedCartridgeLoader;
+
+impl PackedCartridgeLoader {
+    pub fn load(_path: &Path) -> Result<Cartridge, CartridgeError> {
+        // Stub inicialmente, como solicitado
+        Err(CartridgeError::InvalidFormat)
+    }
+}

crates/prometeu-core/src/model/mod.rs

@@ -6,10 +6,12 @@ mod tile_bank;
 mod sprite;
 mod sample;
 mod cartridge;
+mod cartridge_loader;
 mod window;
 
 pub use button::Button;
-pub use cartridge::{AppHeader, AppMode, Cartridge};
+pub use cartridge::{AppMode, Cartridge, CartridgeError};
+pub use cartridge_loader::{CartridgeLoader, DirectoryCartridgeLoader, PackedCartridgeLoader};
 pub use color::Color;
 pub use sample::Sample;
 pub use sprite::Sprite;

crates/prometeu-core/src/prometeu_os/prometeu_os.rs

@@ -127,14 +127,10 @@ impl PrometeuOS {
 
     /// Carrega um cartucho na PVM e reseta o estado de execução.
     pub fn initialize_vm(&mut self, vm: &mut VirtualMachine, cartridge: &Cartridge) {
-        vm.initialize(cartridge.program.clone());
+        vm.initialize(cartridge.program.clone(), &cartridge.entrypoint);
         
-        // Determina o app_id numérico (hash da string app_id)
-        use std::collections::hash_map::DefaultHasher;
-        use std::hash::{Hash, Hasher};
-        let mut s = DefaultHasher::new();
-        cartridge.header.app_id.hash(&mut s);
-        self.current_app_id = s.finish() as u32;
+        // Determina o app_id numérico
+        self.current_app_id = cartridge.app_id;
     }
 
     /// Executa um tick do host (60Hz).
@@ -308,8 +304,8 @@ impl PrometeuOS {
 mod tests {
     use super::*;
     use crate::hardware::InputSignals;
-    use crate::model::{AppHeader, AppMode, Cartridge};
-    use crate::virtual_machine::{Program, VirtualMachine};
+    use crate::model::{AppMode, Cartridge};
+    use crate::virtual_machine::{Value, VirtualMachine};
     use crate::Hardware;
 
     #[test]
@@ -319,20 +315,15 @@ mod tests {
         let mut hw = Hardware::new();
         let signals = InputSignals::default();
 
-        // JMP 0 (Loop infinito)
-        // OpCode::Jmp = 0x02, seguido por u32 0 (0x00, 0x00, 0x00, 0x00)
         let rom = vec![0x02, 0x00, 0x00, 0x00, 0x00, 0x00];
-        let program = Program::new(rom, vec![]);
         let cartridge = Cartridge {
-            header: AppHeader {
-                mode: AppMode::Game,
-                app_id: "test".to_string(),
-                magic: 0,
-                version: 1,
-                title: "test".to_string(),
-                entrypoint: 0,
-            },
-            program,
+            app_id: 1234,
+            title: "test".to_string(),
+            app_version: "1.0.0".to_string(),
+            app_mode: AppMode::Game,
+            entrypoint: "0".to_string(),
+            program: rom,
+            assets_path: None,
         };
         os.initialize_vm(&mut vm, &cartridge);
 
@@ -362,21 +353,17 @@ mod tests {
         // FrameSync (0x80)
         // JMP 0
         let rom = vec![
-            0x10, 0x00, 0x00, 0x00, 0x00, 0x00, // PUSH const 0 (2 bytes opcode + 4 bytes u32)
             0x80, 0x00,                         // FrameSync (2 bytes opcode)
             0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // JMP 0 (2 bytes opcode + 4 bytes u32)
         ];
-        let program = Program::new(rom, vec![Value::Integer(0)]);
         let cartridge = Cartridge {
-            header: AppHeader {
-                mode: AppMode::Game,
-                app_id: "test".to_string(),
-                magic: 0,
-                version: 1,
-                title: "test".to_string(),
-                entrypoint: 0,
-            },
-            program,
+            app_id: 1234,
+            title: "test".to_string(),
+            app_version: "1.0.0".to_string(),
+            app_mode: AppMode::Game,
+            entrypoint: "0".to_string(),
+            program: rom,
+            assets_path: None,
         };
         os.initialize_vm(&mut vm, &cartridge);
 

crates/prometeu-core/src/virtual_machine/virtual_machine.rs

@@ -45,9 +45,19 @@ impl VirtualMachine {
         }
     }
 
-    pub fn initialize(&mut self, program: Program) {
-        self.program = program;
-        self.pc = 0;
+    pub fn initialize(&mut self, program_bytes: Vec<u8>, entrypoint: &str) {
+        // Por enquanto, tratamos os bytes como a ROM diretamente.
+        // TODO: Implementar parser de .pbc para extrair constant_pool e rom reais.
+        self.program = Program::new(program_bytes, vec![]);
+        
+        // Se o entrypoint for numérico, podemos tentar usá-lo como PC inicial.
+        // Se não, por enquanto ignoramos ou começamos do 0.
+        if let Ok(addr) = entrypoint.parse::<usize>() {
+            self.pc = addr;
+        } else {
+            self.pc = 0;
+        }
+        
         self.operand_stack.clear();
         self.call_stack.clear();
         self.globals.clear();