Syntax error on this struc, why?

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StringCheesian

Joined: 20 Feb 2004
Posts: 20

StringCheesian 22 Feb 2004, 00:41

Code:

struc segmentDescriptor segBase, segLength, flags
{
   .length0_15   dw   (segLength & 0x0FFFF)
   .base0_15     dw   (segBase & 0x0000FFFF)
   .base16_23    db  ((segBase & 0x00FF0000) >> 16)
   .flags        dw (((segLength & 0xF0000) >> 8) | flags)
   .base24_31    db  ((segBase & 0xFF000000) >> 24)
}

This struc takes a 32 bit base and 20 bit length and splits each up into the appropriate feilds.

But it doesn't work! Instead I get this:

Code:

flat assembler  version 1.51
test.asm [78]:
   a segmentDescriptor 0,0,0
test.asm [23] segmentDescriptor [1]:
   .length0_15   dw   (segLength & 0x0FFFF)
error: invalid argument.

I just want FASM to deal with the weirdness of the descriptor format for me. Am I doing something wrong? Should I use a macro instead?

22 Feb 2004, 00:41

comrade

Joined: 16 Jun 2003
Posts: 1150
Location: Russian Federation

comrade 22 Feb 2004, 01:09

&, >> are not proper symbols

use AND and shr

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comrade (comrade64@live.com; http://comrade.ownz.com/)

22 Feb 2004, 01:09

StringCheesian

Joined: 20 Feb 2004
Posts: 20

StringCheesian 22 Feb 2004, 01:36

AND would be bitwise not logical, right?

22 Feb 2004, 01:36

comrade

Joined: 16 Jun 2003
Posts: 1150
Location: Russian Federation

comrade 22 Feb 2004, 02:00

yes, bitwise

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comrade (comrade64@live.com; http://comrade.ownz.com/)

22 Feb 2004, 02:00

StringCheesian

Joined: 20 Feb 2004
Posts: 20

StringCheesian 22 Feb 2004, 06:24

Thanks!

22 Feb 2004, 06:24

Tommy

Joined: 17 Jun 2003
Posts: 489
Location: Norway

Tommy 22 Feb 2004, 08:33

Also, you should use "or" instead of "|"... Wink

22 Feb 2004, 08:33

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