submacro problem

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Lion17

Joined: 30 May 2006
Posts: 5

Lion17 30 May 2006, 05:48

if I write code:

Code:

struc S1 {
.W1 Dw ?
.W2 Dw ?
} 

V1 S1

I got:

Code:

V1.W1 Dw ?
V1.W2 Dw ?

But if I write next:

Code:

macro M1 {
.W2 Dw ?
}

struc S1 {
.W1 Dw ?
M1
} 

V1 S1

I produce these:

Code:

.W1 Dw ?
.W1.W2 Dw ?

Why?

And how I can make first code using macro for structure members?

30 May 2006, 05:48

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 30 May 2006, 08:42

STRUC is just another kind of macro and "M1" here is among the lines emitted by that macro, which are later processed independently. If you need a macro for a structure members, you can do it like:

Code:

struc M1 {
times 0 . ; Put . in some way here to prevent redefining of main label
.W2 Dw ?
}

struc S1 {
.:
.W1 Dw ?
. M1
} 

V1 S1

which does the same thing as:

Code:

macro M1 name {
name#.W2 Dw ?
}

struc S1 {
.:
.W1 Dw ?
M1 .
} 

V1 S1

Look also here: http://board.flatassembler.net/topic.php?p=39105#39105
for some more details on STRUC tricks.

30 May 2006, 08:42

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