Bug??? popfq: Fasm outputs--> error: illegal instruction.

Index > Compiler Internals > Bug??? popfq: Fasm outputs--> error: illegal instruction.

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Mac2004

Joined: 15 Dec 2003
Posts: 314

Mac2004 18 Jun 2006, 18:41

Hello!

Fasm 1.66 outputs illegal instruction error message while trying to compile popfq instruction. It's counterpart pushfq instruction assembles nicely. Is there a bug in fasm or am I missing something?

regards mac2004

Code:

use64
        pushfq
        popfq

18 Jun 2006, 18:41

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 19 Jun 2006, 14:00

YASM r1578 (DJGPP snapshot) works if you change "use64" to "bits 64", so it's probably a bug (must've already existed in 1.64 too since it doesn't work there either).

19 Jun 2006, 14:00

Mac2004

Joined: 15 Dec 2003
Posts: 314

Mac2004 19 Jun 2006, 14:46

Hi!

I think the error message indicates that Fasm does not know popfq instruction.

rugxulo: I found this problem while converting some yasm (64bit) sources and noticed that popfq does not work.

regards,
Mac2004

19 Jun 2006, 14:46

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 19 Jun 2006, 14:49

Quick fix:

Code:

macro popfq
{
  virtual
    pushfq ; this to be sure that we are in use64 mode
  end virtual

  popf
}

19 Jun 2006, 14:49

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8353
Location: Kraków, Poland

Tomasz Grysztar 20 Jun 2006, 13:57

I put POPFQ after POPFW by mistake (while the tables have to sorted alphabetically), that's the cause of this.

20 Jun 2006, 13:57

Mac2004

Joined: 15 Dec 2003
Posts: 314

Mac2004 20 Jun 2006, 16:53

ok, I am glad that this is solved! Very Happy

regards Mac2004

20 Jun 2006, 16:53

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 23 Jun 2006, 03:41

What, no silent update? Wink

23 Jun 2006, 03:41

Mac2004

Joined: 15 Dec 2003
Posts: 314

Mac2004 25 Jun 2006, 11:53

Now there's a silent update..... Just check out the date of Fasm packages.
regards, Mac2004 Very Happy

25 Jun 2006, 11:53

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 27 Jun 2006, 06:05

Yeah, and I must've initially downloaded it (Friday) after the site date update but before the (DOS) file was updated: it didn't fix it!

But, I've since redownloaded and all is well again. Didn't need the fix, though, since I don't have a 64-bit processor! Smile

P.S. Privalov, don't forget "Optimal fill" for those silly .INC files. Very Happy

P.P.S. Does this site have any download bandwidth restrictions? I keep wondering why you repost the entire .ZIP archive (particularly the Windows version) when a simple diff or even a .TAR.BZ2 would be smaller/better. Oh well, waste your bandwidth if you want. Razz

27 Jun 2006, 06:05

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