From:	"Edmund Horner" <ejrh AT paradise DOT net DOT nz>
Newsgroups:	comp.os.msdos.djgpp
References:	<3994FC92 DOT B2795AF1 AT addr DOT com>
Subject:	Re: Another DXE question
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Date:	Tue, 15 Aug 2000 16:46:14 +1200
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

The typical method of using external functions in a DXE is to pass a
structure containing pointers to those functions to the DXE.  For example:

struct IMPORTS
{
    size_t (* malloc) (size_t);
    void (* free) (void *);
} imports;

dxe = _dxe_load ("alloctest.dxe");
dxe (&imports);

Inside the DXE you can use (for example):

void alloctest (struct IMPORTS *imports)
{
    char *x;

    x = imports->malloc (100);
    imports->free (x);
}

This is the way I do things...

"Ardy Falls" <ardy AT addr DOT com> wrote in message
news:3994FC92 DOT B2795AF1 AT addr DOT com...
> To get around the unresolved externals problem could you somehow
> combine a cpp file with a object file?
> the reason I'm asking is because I am making a graphics lib where you
> can dynamically load in drivers that are specific to the users video
> card and a lot of the functions are asm files that are turned to .o
> files using nasm.
> Thanks
>             Ardy
>             http://www.addr.com/~ardy/
>

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