From: "Charles Sandmann" <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DPMI setup Function
Date: Sun, 17 Jun 2001 23:51:49
Organization: Aspen Technology, Inc.
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> Enrico asked:  How can I implement  the following function?
> int set_ldt_entry(int entry, unsigned long base, unsigned int limit, int
> seg_32bit_flag, int contents, int read_only_flag, int limit_in_pages_flag)

You should first look in include/dpmi.h - in particular the functions:
__dpmi_set_descriptor (which does it all at once, and is faster, or)

__dpmi_set_segment_base_address
__dpmi_set_segment_limit
__dpmi_set_descriptor_access_rights  (3 different calls)

You might look at the DJGPP source - in particular stub.asm does a lot
of these type calls setting up DJGPP to run your image.