fibonacci asm

.section .data
.section .text

.globl _start
_start:
    pushl $5
    call fibonacci
    addl $4, %ebp
    movl %eax, %ebx
    movl $1, %eax
    int $0x80

# Computes n-th fibonacci number
# eax - result
# ebx - current
# ecx - last
# edi - index

.type fibonacci, @function
fibonacci:
    pushl %ebp
    movl %esp, %ebp
    movl $1, %ecx
    movl $1, %ebx
    movl $3, %edi

loop_start:
    cmpl 8(%ebp), %edi
    jge end
    movl %ebx, %eax
    addl %ecx, %eax
    movl %ebx, %ecx
    movl %eax, %ebx
    incl %edi
    jmp loop_start
end:
    movl %ebp, %esp
    popl %ebp
    ret