EXIT = 1
READ = 3
WRITE = 4
STDIN = 0
STDOUT = 1

.data
    star: .ascii "*"
    space: .ascii " "
    new_line: .ascii "\n"
    start_height: .long 0
    height: .long 0
    star_countner: .long 1

.text
.global _start
_start:
    movl $READ, %eax        # GETTING USER INPUT
    movl $STDIN, %ebx
    movl $height, %ecx
    movl $1, %edx
    int $0x80
    movl height, %esi
    subl $48, %esi          # ASCII -> LONG XD
    movl %esi, height
    movl %esi, start_height

space_loop:                 # PRINTING SPACES
    movl height, %esi
    cmpl $0, %esi
    je print_trunk          # END OF TREE -> PRINT TRUNK
    pushl %esi              # 2ND ARGUMENT - NUMBER OF SIGNS TO PRINT
    movl $space, %ecx
    pushl %ecx              # 1ST ARGUMENT - SIGN TO PRINT
    decl %esi
    movl %esi, height
    call print

star_loop:                  # PRINTING STARS
    movl star_countner, %esi
    pushl %esi
    movl $star, %ecx
    pushl %ecx
    add $2, %esi
    movl %esi, star_countner
    call print
    call print_new_line
    jmp space_loop

print_trunk:
    movl start_height, %esi
    pushl %esi
    movl $space, %ecx
    pushl %ecx
    call print
    pushl $1
    movl $star, %ecx
    pushl %ecx
    call print
    call print_new_line

quit:
    movl $EXIT, %eax
    int $0x80

.type print, @function
print:
    pushl %ebp
    movl %esp, %ebp
    movl 12(%ebp), %esi

print_loop:
    cmpl $0, %esi
    je end_loop
    decl %esi
    movl $WRITE, %eax
    movl $STDOUT, %ebx
    movl 8(%ebp), %ecx
    movl $1, %edx
    int $0x80
    jmp print_loop

end_loop:
    movl %ebp, %esp
    popl %ebp
    ret

.type print_new_line, @function
print_new_line:
    movl $WRITE, %eax
    movl $STDOUT, %ebx
    movl $new_line, %ecx
    movl $1, %edx
    int $0x80
    ret