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

.data
    star: .ascii "*"
    space: .ascii " "
    newLine: .ascii "\n"
    height: .long 0
    counter1: .long 0
    counter2: .long 1

.text
.global _start
_start:
    movl $READ, %eax
    movl $STDIN, %ebx
    movl $height, %ecx
    movl $1, %edx
    int $0x80
    sub $48, height
    movl height, %esi
    movl %esi, counter1

mainLoop:
    cmpl $0, counter1
    je printTrunk

    # PRINT SPACES
    pushl counter1
    decl counter1
    pushl $space
    call print

    # PRINT STARS
    pushl counter2
    add $2, counter2
    pushl $star
    call print

    # NEW LINE
    pushl $1
    pushl $newLine
    call print
    jmp mainLoop

printTrunk:
    pushl height
    pushl $space
    call print
    pushl $1
    pushl $star
    call print
    pushl $1
    pushl $newLine
    call print

    movl $EXIT, %eax
    int $0x80

.type print, @function
print:
    movl 8(%esp), %esi

printLoop:
    cmpl $0, %esi
    je endLoop
    decl %esi
    movl $WRITE, %eax
    movl $STDOUT, %ebx
    movl 4(%esp), %ecx
    movl $1, %edx
    int $0x80
    jmp printLoop

endLoop:
    ret