ASM Community

Hi Everyone

I wonder if anyone knows how to list the
contents of an array in Masm32, but I guess
you need to look at is my source
What I mean is that it only lists one element of the array and then crashes, I'm using
StdOut to show my contents.
I also changed the code so it won't lock up on my host's server, but I have arrows pointing
to where it crashes,
If I get past this hurdle, I want to do a bubblesort

CGI

http://busybeesolutions.com/cgi-bin/intro/cgidemo2.exe

Source

http://busybeesolutions.com/sourcefiles/cgidemo2.asm


Here is the problem code

lea edx,nums
topp:

inc num1
mov eax, ; <-------- This is what makes it crash
invoke wsprintf,ADDR sizeBuffer,ADDR printint,eax
invoke StdOut,ADDR br
invoke StdOut,ADDR sizeBuffer
add edx,4 ; <-----The Increment

invoke StdOut,ADDR lf

cmp num1,5
jl plopy




:stupid:

First of all, EDX is not preserved by the API functions in the loop, so after these functions it can be anything... The only registers that are saved are ebx, esi and edi (and ebp, esp of course)..
An easier solution is this:

    xor  ebx, ebx

    

topp:   

    

    invoke wsprintf,ADDR sizeBuffer,ADDR printint, dword ptr [offset nums + 4 * ebx]

    invoke StdOut,ADDR br

    invoke StdOut,ADDR sizeBuffer

    invoke StdOut,ADDR lf  

  

    inc     ebx

    cmp     ebx, 5

    jl      topp

Thomas

There is a bubble sort in the algo section...

wsprintf is declared as C function in windows.inc, and then masm cleans up the stack for you.

Thomas