[chore] Shorter Makefile

Makefile

@@ -21,7 +21,8 @@ KERNEL_CPP = kernel/entry.cpp kernel/main.cpp kernel/serial.cpp kernel/fs.cpp \
              kernel/interrupt/gdt.cpp kernel/interrupt/idt.cpp \
              kernel/interrupt/pic.cpp kernel/interrupt/pit.cpp \
              graphics/context.cpp graphics/draw.cpp \
-             fonts/pixel_font.cpp
+             fonts/pixel_font.cpp \
+             desktop/prepare.cpp
 KERNEL_ASM = kernel/scheduler/context_switch.S kernel/interrupt/isr.S kernel/interrupt/idt_helpers.S
 KERNEL_OBJ = $(KERNEL_CPP:%.cpp=build/%.o) $(KERNEL_ASM:%.S=build/%.o)
 
@@ -47,7 +48,8 @@ all: _bd $(EFI_OBJ) $(BOOT_OBJ) $(KERNEL_OBJ)
 	@echo "Done."
 
 _bd:
-	@mkdir -p build/graphics build/kernel build/fonts build/kernel/memory \
+	@mkdir -p build/graphics build/kernel build/fonts build/desktop \
+	          build/kernel/memory \
 	          build/kernel/scheduler build/kernel/interrupt \
 	          build/efi/lib build/efi/lib/x86_64 build/efi/lib/runtime build/efi/gnuefi
 
@@ -83,40 +85,15 @@ build/%.o: %.c
 	@echo "Compile C $<"
 	@gcc $(CFLAGS) -c $< -o $@
 
-build/kernel/%.o: kernel/%.cpp | _bd
+build/%.o: %.cpp
 	@echo "Compile CPP $<"
 	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
 
-build/kernel/memory/%.o: kernel/memory/%.cpp | _bd
-	@echo "Compile CPP $<"
-	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
-
-build/kernel/scheduler/%.o: kernel/scheduler/%.cpp | _bd
-	@echo "Compile CPP $<"
-	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
-
-build/kernel/scheduler/%.o: kernel/scheduler/%.S | _bd
+build/%.o: %.S
 	@echo "Compile AS $<"
 	@gcc -Iinclude -Iefi/inc -ffreestanding -fno-stack-protector -fno-stack-check \
 	    -fshort-wchar -mno-red-zone -fcf-protection=none -c $< -o $@
 
-build/kernel/interrupt/%.o: kernel/interrupt/%.cpp | _bd
-	@echo "Compile CPP $<"
-	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
-
-build/kernel/interrupt/%.o: kernel/interrupt/%.S | _bd
-	@echo "Compile AS $<"
-	@gcc -Iinclude -Iefi/inc -ffreestanding -fno-stack-protector -fno-stack-check \
-	    -fshort-wchar -mno-red-zone -fcf-protection=none -c $< -o $@
-
-build/graphics/%.o: graphics/%.cpp | _bd
-	@echo "Compile CPP $<"
-	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
-
-build/fonts/%.o: fonts/%.cpp | _bd
-	@echo "Compile CPP $<"
-	@g++ $(KERNEL_CXXFLAGS) -c $< -o $@
-
 vdir: all
 	@mkdir -p vdir/EFI/BOOT
 	@cp build/BOOTX64.EFI vdir/EFI/BOOT

desktop/prepare.cpp

@@ -0,0 +1,9 @@
+#include <graphics/draw.h>
+
+void prepare(UINT32 width, UINT32 height, COLOR_RGB color) {
+    for (UINT32 i = 0; i < height; i++) {
+        for (UINT32 j = 0; j < width; j++) {
+            draw_pixel(i, j, color);
+        }
+    }
+}

fonts/pixel_font.cpp

@@ -3,16 +3,7 @@
 #include <graphics/draw.h>
 #include <common.h>
 
-static unsigned int pf_x = 0;
-static unsigned int pf_y = 1;
-
-void pf_reset_position(void) {
-    // 其实应该还要清一下屏，后面思考一个安全的做法
-    pf_x = 0;
-    pf_y = 1;
-}
-
-void pf_print_char(char c, unsigned int basex, unsigned int basey, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
+void pf_print_char(char c, uint16_t basex, uint16_t basey, COLOR_RGB color) {
     for (unsigned int y = 0; y < 16; y++) {
         unsigned char data = hankaku_pixels[c][y];
         for (int x = 7; x >= 0; x--) {
@@ -31,27 +22,9 @@ void pf_print_char(char c, unsigned int basex, unsigned int basey, EFI_GRAPHICS_
     }
 }
 
-void pf_print(const char* text, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
+void pf_print(const char* text, uint16_t basex, uint16_t basey, COLOR_RGB color) {
     for (unsigned int i = 0; i < strlen(text); i++) {
         char c = text[i];
-        if (c == '\n') {
-            pf_x = 0;
-            pf_y++;
-            if ((pf_y - 1) * 16 >= g_gfx.vr) {
-                gfx_clear();
-                pf_y = 1;
-            }
-            continue;
-        }
-        if (pf_x * 9 + 9 > g_gfx.hr) {
-            pf_x = 0;
-            pf_y++;
-            if ((pf_y - 1) * 16 >= g_gfx.vr) {
-                gfx_clear();
-                pf_y = 1;
-            }
-        }
-        pf_print_char(c, pf_x * 9, (pf_y - 1) * 16, color);
-        pf_x++;
+        pf_print_char(c, basex + i * 8, basey, color);
     }
 }

graphics/context.cpp

@@ -1,4 +1,5 @@
 #include <graphics/context.h>
+#include <graphics/draw.h>
 
 gfx_context g_gfx;
 
@@ -6,10 +7,10 @@ void gfx_init(EFI_GRAPHICS_OUTPUT_PROTOCOL *GOP) {
     g_gfx.GOP = GOP;
     g_gfx.hr = GOP->Mode->Info->HorizontalResolution;
     g_gfx.vr = GOP->Mode->Info->VerticalResolution;
-    g_gfx.base = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) GOP->Mode->FrameBufferBase;
+    g_gfx.base = (COLOR_RGB *) GOP->Mode->FrameBufferBase;
 }
 
 void gfx_clear(void) {
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL black = {0, 0, 0, 0};
+    COLOR_RGB black = {0, 0, 0, 0};
     g_gfx.GOP->Blt(g_gfx.GOP, &black, EfiBltVideoFill, 0, 0, 0, 0, g_gfx.hr, g_gfx.vr, 0);
 }

graphics/draw.cpp

@@ -1,7 +1,7 @@
 #include <graphics/draw.h>
 
-void draw_pixel(unsigned int x, unsigned int y, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color) {
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL *p = g_gfx.base + (g_gfx.hr * y) + x;
+void draw_pixel(unsigned int x, unsigned int y, COLOR_RGB color) {
+    COLOR_RGB *p = g_gfx.base + (g_gfx.hr * y) + x;
 
     p->Blue = color.Blue;
     p->Green = color.Green;

include/common.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #define ASM asm volatile
+#define COLOR_RGB EFI_GRAPHICS_OUTPUT_BLT_PIXEL
 
 static unsigned int strlen(const char* arr) { // 获取string长度
     int i = 0;

include/desktop/prepare.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void prepare(UINT32 width, UINT32 height, COLOR_RGB color = {34, 139, 34});

include/fonts/pixel_font.h

@@ -1,8 +1,9 @@
 #pragma once
 
 #include <graphics/context.h>
+#include <graphics/draw.h>
 
-void pf_print_char(char c, unsigned int basex, unsigned int basey, 
-        EFI_GRAPHICS_OUTPUT_BLT_PIXEL color = {255, 255, 255, 255});                         // Pixel Font 打印字符
-void pf_print(const char* text, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color = {255, 255, 255, 255}); // Pixel Font 打印string
-void pf_reset_position(void);                                                                // 重设Pixel Font Cursor位置
+void pf_print_char(char c, uint16_t basex, uint16_t basey, 
+        COLOR_RGB color = {255, 255, 255, 255});                         // Pixel Font 打印字符
+void pf_print(const char* text, uint16_t basex, uint16_t basey, COLOR_RGB color = {255, 255, 255, 255}); // Pixel Font 打印string
+// void pf_reset_position(void);                                            // 重设Pixel Font Cursor位置

include/graphics/context.h

@@ -3,12 +3,13 @@
 // 这个文件存在的目的是让graphics的draw功能不用每次传 GOP hr vr base
 
 #include <efi.h>
+#include <common.h>
 
 struct gfx_context {
     EFI_GRAPHICS_OUTPUT_PROTOCOL *GOP;
     unsigned int hr;
     unsigned int vr;
-    EFI_GRAPHICS_OUTPUT_BLT_PIXEL *base;
+    COLOR_RGB *base;
 };
 
 extern gfx_context g_gfx;

include/graphics/draw.h

@@ -3,4 +3,6 @@
 #include <efi.h>
 #include <graphics/context.h>
 
-void draw_pixel(unsigned int x, unsigned int y, EFI_GRAPHICS_OUTPUT_BLT_PIXEL color); // 画像素
+#define COLOR_RGB EFI_GRAPHICS_OUTPUT_BLT_PIXEL
+
+void draw_pixel(unsigned int x, unsigned int y, COLOR_RGB color); // 画像素

kernel/fs.cpp

@@ -1,5 +1,5 @@
-#include <fs.h>
-#include <serial.h>
+#include <kernel/fs.h>
+#include <kernel/serial.h>
 #include <memory/heap.h>
 #include <common.h>
 

kernel/interrupt/gdt.cpp

@@ -1,6 +1,6 @@
-#include <gdt.h>
+#include <kernel/gdt.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 static gdt_entry g_gdt[7];  // 5 segments + TSS (2 entries)
 static gdt_ptr   g_gdt_ptr;

kernel/interrupt/idt.cpp

@@ -1,7 +1,7 @@
-#include <idt.h>
+#include <kernel/idt.h>
 #include <common.h>
-#include <pic.h>
-#include <serial.h>
+#include <kernel/pic.h>
+#include <kernel/serial.h>
 
 // Defined in isr.S — 256 ISR stubs
 extern "C" void* isr_stub_table[256];

kernel/interrupt/pic.cpp

@@ -1,6 +1,6 @@
-#include <pic.h>
+#include <kernel/pic.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 static inline void outb(UINT16 port, UINT8 val) {
     ASM("outb %0, %1" : : "a"(val), "Nd"(port));

kernel/interrupt/pit.cpp

@@ -1,7 +1,7 @@
-#include <pit.h>
+#include <kernel/pit.h>
 #include <common.h>
-#include <pic.h>
-#include <serial.h>
+#include <kernel/pic.h>
+#include <kernel/serial.h>
 
 static inline void outb(UINT16 port, UINT8 val) {
     ASM("outb %0, %1" : : "a"(val), "Nd"(port));

kernel/main.cpp

@@ -2,16 +2,17 @@
 #include <graphics/context.h>
 #include <graphics/draw.h>
 #include <fonts/pixel_font.h>
-#include <serial.h>
+#include <kernel/serial.h>
 #include <common.h>
 #include <memory/pmm.h>
 #include <memory/heap.h>
-#include <scheduler.h>
-#include <fs.h>
-#include <gdt.h>
-#include <idt.h>
-#include <pic.h>
-#include <pit.h>
+#include <kernel/scheduler.h>
+#include <kernel/fs.h>
+#include <kernel/gdt.h>
+#include <kernel/idt.h>
+#include <kernel/pic.h>
+#include <kernel/pit.h>
+#include <desktop/prepare.h>
 
 extern EFI_SYSTEM_TABLE *ST;
 
@@ -93,30 +94,6 @@ extern "C" void kernel_main() {
     serial_write("Sylva: init heap...\n");
     init_heap();
 
-    // test kmalloc/kfree
-    serial_write("Sylva: kmalloc test...\n");
-    void* p1 = kmalloc(64);
-    void* p2 = kmalloc(128);
-    void* p3 = kmalloc(256);
-    serial_write("Sylva: p1 = ");
-    serial_write_hex((UINTN)p1);
-    serial_write("  p2 = ");
-    serial_write_hex((UINTN)p2);
-    serial_write("  p3 = ");
-    serial_write_hex((UINTN)p3);
-    serial_write("\n");
-
-    serial_write("Sylva: kfree test...\n");
-    kfree(p2);
-    kfree(p1);
-    kfree(p3);
-
-    void* p4 = kmalloc(32);
-    serial_write("Sylva: realloc p4 = ");
-    serial_write_hex((UINTN)p4);
-    serial_write("\n");
-    kfree(p4);
-
     serial_write("Sylva: memory init done.\n");
 
     serial_write("Sylva: FS init...\n");
@@ -128,9 +105,11 @@ extern "C" void kernel_main() {
         fs_list();
     }
 
-    pf_print("Welcome to Sylva OS!\n");
     serial_write(" Kernel prepared well.\n");
 
+    prepare((UINT32) g_gfx.vr, (UINT32) g_gfx.hr);
+    pf_print("Hello from SylvaOS!", 100, 100);
+
     // --- Interrupt infrastructure ---
     serial_write("Sylva: init GDT...\n");
     gdt_init();
@@ -152,37 +131,7 @@ extern "C" void kernel_main() {
     ASM("sti");
     serial_write("Sylva: interrupts enabled\n");
 
-    // --- Multitasking demo ---
-    serial_write("Sylva: creating tasks...\n");
-
-    // Task A: prints messages — preemption handles time slicing
-    task_create("taskA", []() {
-        for (int i = 0; i < 10; i++) {
-            serial_write("[taskA] running iteration ");
-            serial_write_hex(i);
-            serial_write("\n");
-            for (volatile int j = 0; j < 50000000; j++) {}
-        }
-        serial_write("[taskA] done\n");
-    });
-
-    // Task B: prints messages
-    task_create("taskB", []() {
-        for (int i = 0; i < 5; i++) {
-            serial_write("[taskB] hello from taskB #");
-            serial_write_hex(i);
-            serial_write("\n");
-            for (volatile int j = 0; j < 50000000; j++) {}
-        }
-        serial_write("[taskB] done\n");
-    });
-
-    // Task C: short task
-    task_create("taskC", []() {
-        serial_write("[taskC] quick task\n");
-        for (volatile int j = 0; j < 50000000; j++) {}
-        serial_write("[taskC] finished\n");
-    });
+    // 现在还没有任何tasks
 
     serial_write("Sylva: starting preemptive scheduler\n");
     scheduler_run();  // never returns

kernel/memory/heap.cpp

@@ -1,6 +1,6 @@
 #include <memory/heap.h>
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 struct heap_block {
     UINTN  size;   // includes header; bit 0 = 1 used, 0 free

kernel/memory/pmm.cpp

@@ -1,5 +1,5 @@
 #include <memory/pmm.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 extern EFI_SYSTEM_TABLE *ST;
 

kernel/scheduler/scheduler.cpp

@@ -1,10 +1,10 @@
-#include <scheduler.h>
-#include <idt.h>
-#include <pic.h>
+#include <kernel/scheduler.h>
+#include <kernel/idt.h>
+#include <kernel/pic.h>
 #include <memory/heap.h>
 #include <memory/pmm.h>
 #include <common.h>
-#include <serial.h>
+#include <kernel/serial.h>
 
 // Assembly: context_switch(UINT64* old_rsp, UINT64 new_rsp)
 extern "C" void context_switch(UINT64* old_rsp, UINT64 new_rsp);

kernel/serial.cpp

@@ -1,4 +1,4 @@
-#include <serial.h>
+#include <kernel/serial.h>
 
 extern EFI_SYSTEM_TABLE *ST;