Made Kernel 'Higher-Half' and enabled paging.

git-svn-id: https://spexeah.com:8443/svn/Asuro@85 6dbc8c32-bb84-406f-8558-d1cf31a0ab0c

backup/linker.script.old

@@ -0,0 +1,31 @@
+ENTRY(kstart)
+SECTIONS
+{
+  .text  0x100000 :
+  {
+    text = .; _text = .; __text = .;
+    *(.text)
+    . = ALIGN(4096);
+  }
+  .data  :
+  {
+    data = .; _data = .; __data = .;
+    *(.data)
+    kimage_text = .;
+    LONG(text);
+    kimage_data = .;
+    LONG(data);
+    kimage_bss = .;
+    LONG(bss);
+    kimage_end = .;
+    LONG(end);
+    . = ALIGN(4096);
+  }
+  .bss  :
+  {
+    bss = .; _bss = .; __bss = .;
+    *(.bss)
+    . = ALIGN(4096);
+  }
+  end = .; _end = .; __end = .;
+}

backup/stub.asm.old

@@ -0,0 +1,68 @@
+;
+; Kernel stub
+;
+ 
+;
+; We are in 32bits protected mode
+;
+[bits 32]
+ 
+;
+; Export entrypoint
+;
+[global kstart]
+ 
+;
+; Import kernel entrypoint
+;
+[extern kmain]
+ 
+;
+; Posible multiboot header flags
+;
+MULTIBOOT_MODULE_ALIGN          equ     1<<0
+MULTIBOOT_MEMORY_MAP            equ     1<<1
+MULTIBOOT_GRAPHICS_FIELDS       equ     1<<2
+MULTIBOOT_ADDRESS_FIELDS        equ     1<<16
+ 
+;
+; Multiboot header defines
+;
+MULTIBOOT_HEADER_MAGIC          equ     0x1BADB002
+MULTIBOOT_HEADER_FLAGS          equ     MULTIBOOT_MODULE_ALIGN | MULTIBOOT_MEMORY_MAP
+MULTIBOOT_HEADER_CHECKSUM       equ     -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
+ 
+;
+; Kernel stack size
+;
+KERNEL_STACKSIZE                equ     0x4000
+ 
+section .text
+ 
+;
+; Multiboot header
+;
+align 4
+dd MULTIBOOT_HEADER_MAGIC
+dd MULTIBOOT_HEADER_FLAGS
+dd MULTIBOOT_HEADER_CHECKSUM
+ 
+;
+; Entrypoint
+;
+kstart:
+        mov esp, KERNEL_STACK+KERNEL_STACKSIZE  ;Create kernel stack
+        push eax                                ;Multiboot magic number
+        push ebx                                ;Multiboot info
+        call kmain                              ;Call kernel entrypoint
+        cli                                     ;Clear interrupts
+        hlt                                     ;Halt machine
+ 
+section .bss
+ 
+;
+; Kernel stack location
+;
+align 32
+KERNEL_STACK:
+        resb KERNEL_STACKSIZE