From:	"Lawrence Rust" <lvr AT NOsoftSPsystemAM DOT co DOT uk>
Newsgroups:	comp.os.msdos.djgpp
References:	<9bflht$l1$1 AT jake DOT esu DOT edu>
Subject:	Re: Using MASM generated COFF files with GPP (solution)
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Date:	Tue, 17 Apr 2001 10:37:11 +0100
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There's a couple of extra wrinkles to this though.  Microsoft and GNU differ
about the format of relocation records in COFF files.  As a result of this:

1. A call to an external subroutine from the assembler code is incorrectly
fixed up by ld (the linker).

2. References to local static data are incorrectly fixed up by ld.

To overcome these problems the COFF file produced by MASM must be patched
before linking.  I wrote a simple utility to do this which can be downloaded
(with C source) from www.softsystem.co.uk/masm2djg.zip

-- Lawrence Rust
Software Systems www.softsystem.co.uk

"Tom Hunt" <thunt1 AT falcon DOT lhup DOT edu> wrote in message
news:9bflht$l1$1 AT jake DOT esu DOT edu...

> I posted a question about this a while back and just found a solution to
the
> problem.  If someone posts a similar question in the future, this will fix
> it.
>
> say we're writing a function foo and assembling it with MASM using the
> command line
> ml /c /coff foo.asm
>
> MASM will generate an object file instead of an exe file in COFF format
> instead of its usual OMF format.

[snip]

> that's all there is too it.  When I compiled the whole thing, the link
phase
> took a lot longer than it usually does, so just minimize the dos window
> you're using if you're running Windows and do something else for a bit.

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