feat: Add Process Manager, Limine Framebuffer GUI, RTL8139 Net stack, and extended UNIX commands

hal/include/fb.h

@@ -0,0 +1,47 @@
+#pragma once
+#include "stdint.h"
+#include "stddef.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// 32-bit ARGB Color Palette Helpers
+#define FB_COLOR(r, g, b) (((uint32_t)(r) << 16) | ((uint32_t)(g) << 8) | (uint32_t)(b))
+#define FB_BLACK       FB_COLOR(15, 17, 23)
+#define FB_WHITE       FB_COLOR(240, 246, 252)
+#define FB_DARK_GRAY   FB_COLOR(33, 38, 45)
+#define FB_LIGHT_GRAY  FB_COLOR(139, 148, 158)
+#define FB_BLUE        FB_COLOR(88, 166, 255)
+#define FB_NAVY        FB_COLOR(22, 27, 34)
+#define FB_GREEN       FB_COLOR(63, 185, 80)
+#define FB_RED         FB_COLOR(248, 81, 73)
+#define FB_ORANGE      FB_COLOR(210, 153, 34)
+#define FB_PURPLE      FB_COLOR(188, 140, 255)
+#define FB_CYAN        FB_COLOR(56, 189, 248)
+
+typedef struct {
+    uint32_t *buffer;
+    uint32_t width;
+    uint32_t height;
+    uint32_t pitch;
+    uint32_t bpp;
+    int is_initialized;
+} fb_context_t;
+
+extern fb_context_t g_fb;
+
+// Framebuffer API
+int fb_init(void);
+void fb_clear(uint32_t color);
+void fb_draw_pixel(int x, int y, uint32_t color);
+void fb_fill_rect(int x, int y, int w, int h, uint32_t color);
+void fb_draw_rect(int x, int y, int w, int h, uint32_t color);
+void fb_draw_char(int x, int y, char c, uint32_t fg, uint32_t bg);
+void fb_draw_string(int x, int y, const char *str, uint32_t fg, uint32_t bg);
+void fb_draw_window(int x, int y, int w, int h, const char *title);
+void fb_demo_desktop(void);
+
+#ifdef __cplusplus
+}
+#endif

hal/include/font8x16.h

@@ -0,0 +1,6 @@
+#pragma once
+#include "stdint.h"
+
+// Standard 8x16 VGA bitmap font for characters 32 (' ') to 127
+// Each character is 16 bytes (1 byte per row, 8 bits wide)
+extern const uint8_t font8x16_data[96][16];

hal/include/rtl8139.h

@@ -0,0 +1,31 @@
+#pragma once
+#include "stdint.h"
+#include "stddef.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    uint16_t io_base;
+    uint8_t mac[6];
+    uint8_t rx_buffer[8192 + 16 + 1500] __attribute__((aligned(4)));
+    uint8_t tx_buffers[4][1536] __attribute__((aligned(4)));
+    uint8_t tx_cur;
+    int is_initialized;
+    uint64_t rx_packets;
+    uint64_t tx_packets;
+    uint64_t rx_bytes;
+    uint64_t tx_bytes;
+} rtl8139_dev_t;
+
+extern rtl8139_dev_t g_rtl8139;
+
+// RTL8139 API
+int rtl8139_init(void);
+int rtl8139_send_packet(const void *data, uint16_t len);
+int rtl8139_poll_packet(void *out_buf, uint16_t max_len);
+
+#ifdef __cplusplus
+}
+#endif