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Index > Macroinstructions > labels inside macros

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peter müller



Joined: 18 Feb 2004
Posts: 4
Location: LE / Germany
peter müller
Hi got the following code

macro crc16r_decode {
mov dh,dl
shr dl,1
xor dh,al
test dh,1
jz .no_xor
xor eax, 18005h
.no_xor:
shr eax,1
}

foo:
repeat 8
crc16r_decode
end repeat

i get the the following error:
.no_xor:
error: symbol already defined.

how can this problem solved ?

with best regards
peter
Post 22 Feb 2004, 20:04
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comrade



Joined: 16 Jun 2003
Posts: 1137
Location: Russian Federation
comrade
Strange behaviour, though it seems to work if you manually repeat this block 8 times, instead of using repeat directive. That is after adding "local .no_xor" to beginning of macro of course.

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comrade (comrade64@live.com; http://comrade.ownz.com/)
Post 22 Feb 2004, 20:15
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comrade



Joined: 16 Jun 2003
Posts: 1137
Location: Russian Federation
comrade
You can use @@ as label name, and @F to refer to it:

Code:
macro crc16r_decode {
mov dh,dl
shr dl,1
xor dh,al
test dh,1
jz @F
xor eax, 18005h
@@:
shr eax,1
}

foo:
repeat 8
crc16r_decode
end repeat    


But it should work with local .no_xor, seems to be something with repeat block.

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comrade (comrade64@live.com; http://comrade.ownz.com/)
Post 22 Feb 2004, 23:13
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