Postpone is an illegal instruction

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Trinitek

Joined: 06 Nov 2011
Posts: 257

Trinitek 17 Oct 2015, 23:27

Code:

postpone {
    align 16
    endOfProgram:
}

The above produces "error: illegal instruction" from FASM 1.70.03, and an infinitely less insightful "code cannot be generated" from FASM 1.71.39.

What is going on here?

17 Oct 2015, 23:27

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20593
Location: In your JS exploiting you and your system

revolution 18 Oct 2015, 00:00

There is no point testing that in any version less than 1.71.14. Postpone was introduced in version 1.71.14.

And for the "code cannot be generated" error, we will need to see your code to see what you have done. Usually this error is because of some variable length code or definition that oscillates between two values.

18 Oct 2015, 00:00

Trinitek

Joined: 06 Nov 2011
Posts: 257

Trinitek 18 Oct 2015, 00:20

Hmm, it turned out to be a bad if statement in an unrelated section. The two errors from the different versions aren't related. Nothing to see here.

18 Oct 2015, 00:20

shutdownall

Joined: 02 Apr 2010
Posts: 517
Location: Munich

shutdownall 18 Oct 2015, 08:30

What sould happen exactly after postpone ?
Is any code following ?
I think the combination of postpone and align could maybe cause problems.

18 Oct 2015, 08:30

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 18 Oct 2015, 08:31

"Code can not be generated" is an error related to the whole source, not to the postpone macro itself.

18 Oct 2015, 08:31

Trinitek

Joined: 06 Nov 2011
Posts: 257

Trinitek 18 Oct 2015, 09:05

If anyone is interested, here are the code snippets of interest.

Code:

; palette.inc
macro color cName*, r*, g*, b* {
    c.#cName = paletteIndex_
    postpone \{
        if ~ defined c_palette_ | defined @f
            @@:
            c_palette_:
        end if
        c.#cName#.palette: db r shr 2, g shr 2, b shr 2
    \}
    paletteIndex_ = paletteIndex_ + 1
}

color ALPHA, 0, 0, 0
color BLACK, 0, 0, 0
color BLUE, 0, 0, 255
color DARKBLUE, 0, 0, 127
color LIGHTBLUE, 127, 127, 255

Code:

; At the end of the main file of the project, ricochet.asm
postpone {
    align 16
    endOfProgram:
}

18 Oct 2015, 09:05

JohnFound

Joined: 16 Jun 2003
Posts: 3499
Location: Bulgaria

JohnFound 18 Oct 2015, 14:51

Trinitek, this code compiles for me. If you get "code cannot be generated", there is something wrong elsewhere in your code.

18 Oct 2015, 14:51

Trinitek

Joined: 06 Nov 2011
Posts: 257

Trinitek 18 Oct 2015, 18:03

Oh no, I've already fixed it. I had made a syntax mistake in that if statement. I just wanted to post it to show what was going on and what I was working with.

18 Oct 2015, 18:03

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