ASM Browser Engine

Overview

The ASM Browser is a pure assembly-language browser engine that runs at the kernel level, designed to serve and execute Node.js applications. It provides a machine-level interface for web-like functionality without requiring a traditional web browser.

Design Principles

• Pure Assembly: All core functionality in x86_64 assembly
• Kernel-Level: Runs in kernel space with direct hardware access
• Node.js Integration: Serves and executes Node.js applications
• Minimal Dependencies: No external browser engine (no Chromium, no WebKit)
• Native Rendering: Direct framebuffer rendering, no HTML/CSS parsing

Architecture Components

1. Browser Engine Core

File: kernel/browser/engine.asm

Purpose: Core browser engine that manages rendering, execution, and resource loading.

Components:

• Document Object Model (DOM) - Simplified
  • Tree structure for UI elements
  • Element properties (position, size, style)
  • Event handling
• Rendering Engine
  • Direct framebuffer rendering
  • Rectangle, line, text rendering
  • Image rendering (PNG, ICO support)
  • Font rendering (bitmap fonts)
• JavaScript Runtime Bridge
  • V8 engine integration
  • Node.js module loading
  • API bridge to kernel services
• Resource Loader
  • File system access
  • Network requests (future)
  • Caching mechanism

2. Node.js Integration Layer

File: kernel/browser/nodejs.asm

Purpose: Bridge between ASM browser and Node.js runtime.

Components:

• Node.js Process Management
  • Spawn Node.js processes
  • IPC communication
  • Process lifecycle management
• Module Loading
  • Load Node.js modules from filesystem
  • Resolve module dependencies
  • Execute module code
• API Bridge
  • Kernel syscalls → Node.js APIs
  • Node.js requests → Kernel services
  • Event system integration

3. Rendering System

File: kernel/browser/render.asm

Purpose: Low-level rendering primitives for UI elements.

Components:

• Framebuffer Management
  • Direct memory access to VESA framebuffer
  • Double buffering
  • Dirty region tracking
• Graphics Primitives
  • Rectangle fill/draw
  • Line drawing (Bresenham)
  • Circle/ellipse drawing
  • Text rendering (bitmap fonts)
• Image Rendering
  • PNG decoding (simplified)
  • ICO decoding
  • Image scaling
• Compositing
  • Alpha blending
  • Layer management
  • Clipping regions

File Structure

kernel/browser/
├── engine.asm          # Core browser engine
├── nodejs.asm         # Node.js integration
├── render.asm          # Rendering system
├── events.asm          # Event system
├── network.asm         # Network stack
├── storage.asm        # Storage system
├── dom.asm            # DOM implementation
├── fonts.asm          # Font rendering
├── images.asm         # Image decoding
└── api.asm            # Browser APIs

API Design

Browser Engine API

; Initialize browser engine
browser_init:
    ; Initialize all subsystems
    ; Returns: success/error code

; Load Node.js application
browser_load_app path, callback:
    ; Load Node.js app from path
    ; Execute and register callback

; Render frame
browser_render:
    ; Render current DOM to framebuffer
    ; Handle dirty regions

; Handle input
browser_handle_input event:
    ; Process input event
    ; Distribute to handlers

Node.js Bridge API

; Spawn Node.js process
nodejs_spawn path, args, env:
    ; Create Node.js process
    ; Returns: process ID

; Execute Node.js code
nodejs_execute code, context:
    ; Execute JavaScript code
    ; Returns: result

; Load Node.js module
nodejs_load_module path:
    ; Load and execute module
    ; Returns: module exports

Integration with Existing Systems

• Kernel Integration:
  • Uses existing VESA framebuffer driver
  • Uses existing filesystem driver
  • Uses existing process management
  • Uses existing syscall interface
• Node.js Integration:
  • Loads Node.js from /usr/lib/nodejs/bin/node
  • Uses existing IPC mechanisms
  • Integrates with window manager
  • Uses existing event system
• GUI System Integration:
  • Works with fwcompositor
  • Integrates with window manager
  • Uses existing input system
  • Shares rendering primitives

Implementation Phases

1. Phase 1: Core Engine
   • Basic DOM structure
   • Simple rendering (rectangles, text)
   • Event system foundation
   • Node.js process spawning
2. Phase 2: Rendering
   • Complete graphics primitives
   • Image rendering
   • Font rendering
   • Compositing
3. Phase 3: Node.js Integration
   • Module loading
   • API bridge
   • Event integration
   • IPC communication
4. Phase 4: Network & Storage
   • HTTP client
   • Resource loading
   • Local storage
   • Session storage
5. Phase 5: Complete Browser
   • Full DOM implementation
   • Complete API set
   • Performance optimization
   • Testing and debugging