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From: "Charles Sandmann" <cwsdpmi AT earthlink DOT net>
Newsgroups: comp.os.msdos.djgpp
References: <201304061704 DOT r36H4k48018021 AT delorie DOT com> <c46f36b4-f175-40b5-aeb9-2713a57fab95 AT googlegroups DOT com> <3728e704-b839-4ad6-998e-d3aab686b649 AT googlegroups DOT com>
Subject: Re: ANNOUNCE: DJGPP port of GNU binutils 2.23.2 - stack size
Date: Tue, 23 Apr 2013 23:23:57 -0500
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To: djgpp AT delorie DOT com
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>> Isn't possible to use dynamic allocation instead
>> hardcoding to 10MB or anything else?
>
> Dunno, probably the best person to ask would be CWS.

The issue is memory layout.  In a real OS you can have
sparse memory allocation; so the stack can grow down from
the top of the address space (like 0x7ffc000 down) while
the image and malloc() data grow up (from like 0x4000).

Since DPMI 0.9 provides only "ask for size and you get
an address" type allocation, we have to use a fixed stack
size.  With a full DPMI 1.0 host (or under DJGPP 1.x)
you could have an expand down stack that would
grow and fault in new pages.