From:	"M. Schulter" <mschulter AT value DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Some comments and questions
Date:	24 Oct 1997 03:09:52 GMT
Organization:	Value Net Internetwork Services Inc.
Lines:	47
Message-ID:	<62p3i0$f5g$2@vnetnews.value.net>
References:	<199710220553 DOT SAA21269 AT atlantis DOT actrix DOT gen DOT nz>
NNTP-Posting-Host:	value.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Kris Heidenstrom <kheidens AT actrix DOT gen DOT nz> wrote:
: Hi all,

: djasm -	what is it, and where is it documented?  It isn't mentioned
: anywhere in the help, or in the (otherwise very helpful) FAQ!  Its
: name appears in the exe stub, though :-)  Does it use Intel syntax?
: (he asked hopefully :-)

Hi, there. A quick answer is that djasm is _not_ DJGPP's assembler
intended for most users -- that's the GNU assembler (GAS), as.exe, which
you likely have in place if your files compile with GCC <grin>.

As I understand it, djasm was developed to build the 2K stub used by DJGPP
programs to get into protected mode, since GAS can only produce 32-bit
code and this requires some 16-bit programming. The reason for not
documenting djasm is that it isn't really intended for regular use.

: Intel syntax support - is there a program that converts Intel-syntax
: assembly to AT&T style?  Has anyone tried to write one?  Would there
: be any point in me trying to write one?  Same questions for Intel-style
: disassembly for gdb.

You might enjoy fsdb, which does disassemble in Intel syntax, and you
should read Section 17.3 of the FAQ on some conversion options. While I
write my code in AT&T (GAS), a bit of practice reading Intel syntax
doesn't hurt <grin>.

: Language implementation info - the info file for the standard C library
: is good, but I can't find any language implementation reference - for
: example, something that will tell me what size a 'short' will be, etc.

One source of this information is /djgpp/include/limits.h. The main thing
to keep in mind, as you may already be aware, is that an int in DJGPP is
32 bits or 4 bytes. 

: Best regards to you all,

: Kris.

Thank you very much for your feedback on DJGPP, and I hope that these very
unofficial suggestions might help.

Most appreciatively,

Margo Schulter
mschulter AT value DOT net

- Raw text -