From: "Marp" <Marp AT 0 DOT 0 DOT 0 DOT 0>
Newsgroups: comp.os.msdos.djgpp
Subject: Assembly problem
Date: Sat, 29 Jan 2000 22:06:51 -0500
Organization: MindSpring Enterprises
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

I've been working on building the source to Quake. Building them with DJGPP
is no problem. However I want to build GLQuake for windows and some of the
asm source files won't assemble with gas (v 2.9.4) for MINGW32 (I have the C
only version working). The one asm source file I tried fixing was math.S.
Anyway this was the offending line:

jmp Ljmptab(,%eax,4)

And the error message:

C:/WINDOWS/TEMP\ccZTBjgb.s: Assembler messages:
C:/WINDOWS/TEMP\ccZTBjgb.s:287: Error: suffix or operands invalid for `jmp'

Note that with gas for DJGPP, the assembler doesn't complain about this
line. Anyway what I did was I compiled the C equivalent of the function and
examined the asm output of the compiler. I came up with this replacement for
that line:

movl    Ljmptab(,%eax,4),%eax
jmp     *%eax

Okay so here's my question. Is this a proper fix for this problem, and if
not, what should I have done? I don't really know asm so please keep that in
mind when responding. Thanks in advance.

Marp