[Assembly 1] write, strlen, exit

	# print_hello.s
	.data # start data section
	string:
	.string "Hello, My First Assemly World!!\n"
	.text # start text section
	.global main
	my_write:
	push %ebp
	mov %esp, %ebp
	mov 0x08(%ebp), %ebx # fd
	mov 0x0C(%ebp), %ecx # buf
	mov 0x10(%ebp), %edx # count
	mov $0x04, %eax # system call
	int $0x80
	leave
	ret
	my_exit:
	push %ebp
	mov %esp, %ebp
	mov 0x08(%ebp), %ebx # status
	mov $0x01, %eax # system call
	int $0x80
	strlen:
	push %ebp
	mov %esp, %ebp
	mov 0x08(%ebp), %esi # string
	mov $0x00, %ecx # counter
	.loop:
	movb (%esi), %al
	cmpb $0x00, %al # null byte
	je .final
	inc %esi
	inc %ecx
	jmp .loop
	.final:
	mov %ecx, %eax # eax = count
	leave
	ret
	main:
	push %ebp
	mov %esp, %ebp
	push $string
	call strlen
	mov %eax, %edx
	push %edx # count
	push $string # buf
	push $0x01 # fd
	call my_write # call write
	push $0x00 # status
	call my_exit # call exit
	leave
	ret

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