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Title: static in C
Post by: n00b! on June 17, 2008, 01:29:20 PM

Hi, I want to convert the following C Code to MASM.
Do I have to declare the variable as a global one, or can I do it on another way?

Code Select

void test() {
  static int i;
  i += 2;
}

Title: Re: static in C
Post by: jj2007 on June 17, 2008, 02:53:41 PM

Depends on whether you need a global or local variable...

.data?
varI dd ? ; varI will be zero at progstart

.data
varI dd 123 ; varI will be 123 at progstart

MyProc
LOCAL varI:DWORD
mov varI, 0 ; varI will be undefined whenever you enter this proc, so you better put a value :wink

Title: Re: static in C
Post by: zooba on June 18, 2008, 06:58:20 AM

Yes, it will need to be global.

MASM doesn't have the same scoping rules as C, so you may want to include the name of the function in the variable name to make clear where it belongs.

Cheers,

Zooba :U

Title: Re: static in C
Post by: Tedd on June 18, 2008, 12:37:08 PM

The closest you can get is..

Code Select


test proc
    .data
        i   DWORD 0
    .code
    add DWORD PTR [i],2
    ret
test endp

So I'd just go for a 'global' - with a slightly more meaningful name than 'i' :wink

Title: Re: static in C
Post by: GregL on June 18, 2008, 06:12:25 PM

You could also use the GLOBAL macro.

Code Select


test PROC

    GLOBAL i DWORD 0
    
    add i, 2
    ret
test ENDP

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