segment .main error (format MZ)

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Dasn

Joined: 22 Nov 2004
Posts: 11

Dasn 22 Aug 2009, 08:46

Hello, guys.
If I use a segment name starts with a DOT, like '.main' with the 'segment' directive in 'format MZ', fasm throw me an error.

For example, the following code generates an error.

Code:

format MZ
entry .main:start

segment .text 
x       db      0xff

segment .main
start:
mov     ax, x

Quote:

entry .main:start
error: undefined symbol '.main'.

Yes, when I remove the DOT, say use the name as 'main' or whatever not starts with a dot, the error is gone; Also, I found that if I exchange the positions of the two segments (i.e. move the segment '.main' before the segment '.text'), the error is gone too.

Thanks if you comment. Smile

22 Aug 2009, 08:46

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20665
Location: In your JS exploiting you and your system

revolution 22 Aug 2009, 09:27

Labels beginning with a dot are local labels and the name is attached to the end of any preceding non-local label. In the case above the previous non-local label is "x" and .main is attached to make x.main

Code:

format MZ
entry x.main:start

segment .text
x       db      0xff

segment .main
start:
mov     ax, x

22 Aug 2009, 09:27

Dasn

Joined: 22 Nov 2004
Posts: 11

Dasn 22 Aug 2009, 13:45

revolution wrote:

Labels beginning with a dot are local labels and the name is attached to the end of any preceding non-local label. In the case above the previous non-local label is "x" and .main is attached to make x.main
Code:
format MZ
entry x.main:start

segment .text
x       db      0xff

segment .main
start:
mov     ax, x    

Thanks for your quick reponse, I get it now. Smile

22 Aug 2009, 13:45

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