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# Declare constants used for creating a multiboot header.
.set ALIGN,    1<<0             
.set MEMINFO,  1<<1  
.set FLAGS,    ALIGN | MEMINFO
.set MAGIC,    0x1BADB002       
.set CHECKSUM, -(MAGIC + FLAGS) 

#the multiboot header
.section .multiboot
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM

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/* The bootloader will look at this image and start execution at the symbol
   designated as the entry point. */
ENTRY(_start)

/* Tell where the various sections of the object files will be put in the final
   kernel image. */
SECTIONS
{
	/* Begin putting sections at 1 MiB, a conventional place for kernels to be
	   loaded at by the bootloader. */
	. = 1M;

	/* First put the multiboot header, as it is required to be put very early
	   early in the image or the bootloader won't recognize the file format.
	   Next we'll put the .text section. */
	.text BLOCK(4K) : ALIGN(4K)
	{
		*(.multiboot)
		*(.text)
	}

	/* Read-only data. */
	.rodata BLOCK(4K) : ALIGN(4K)
	{
		*(.rodata)
	}

	/* Read-write data (initialized) */
	.data BLOCK(4K) : ALIGN(4K)
	{
		*(.data)
	}

	/* Read-write data (uninitialized) and stack */
	.bss BLOCK(4K) : ALIGN(4K)
	{
		*(COMMON)
		*(.bss)
		*(.bootstrap_stack)
	}

	/* The compiler may produce other sections, by default it will put them in
	   a segment with the same name. Simply add stuff here as needed. */
}

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# Declare constants used for creating a multiboot header.
.set ALIGN,    1<<0             
.set MEMINFO,  1<<1  
.set VIDINFO,  1<<2
.set FLAGS,    ALIGN | MEMINFO | VIDINFO
.set MAGIC,    0x1BADB002       
.set CHECKSUM, -(MAGIC + FLAGS) 

#the multiboot header
.section .multiboot
.align 4
.long MAGIC
.long FLAGS
.long CHECKSUM
.long 0, 0, 0, 0, 0
.long 0 #set graphics mode
.long 1024, 768, 32 #width, height, depth

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uint16_t *graphics_memory = (uint16_t *)0xA0000;

void putpixel()
{
	graphics_memory[0] = 0xff;
	graphics_memory[1] = 0xff;
	graphics_memory[2] = 0xff;
}

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jmp_highhalf:
   # Now, we're executing at 0xC0100000, so use the virtual address for stack.
   mov	$stack_top, %esp
   # Push multiboot info (EBX) and magic number (EAX)
   push %ebx
   push	%eax
   # Write multiboot info pointer to memory
   mov	%ebx, sys_multiboot_info
   # Check for SSE, and if it exists, enable it
   mov	$0x1, %eax
   cpuid
   test	$(1 << 25), %edx
   jz .noSSE

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   mov $0x4F00, %ax
   int $0x10

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void putpixel(uint32_t* screen,int x,int depth,int y,int pitch,uint32_t color)
{
	unsigned where = (x * depth) + (y * pitch);
	screen[where] = color & 255;
	screen[where + 1] = (color >> 8) & 255;
	screen[where + 2] = (color >> 16) & 255;
	screen[where + 3] = (color >> 24) & 255;
}

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putpixel((uint32_t *)vbe_mode_info->physbase,0,32,0,vbe_mode_info->pitch,my_color);