Date: Wed, 20 Sep 2000 23:48:02 +0530
Message-Id: <200009201818.XAA01038@midpec.com>
From: Prashant TR <tr AT midpec DOT com>
To: jcwilk2000 AT yahoo DOT fr
CC: djgpp AT delorie DOT com
In-reply-to: <8q9qmv$su0$1@nnrp1.deja.com> (jcwilk2000@yahoo.fr)
Subject: Re: fast asm coding with DJGPP
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| From: jcwilk2000 AT yahoo DOT fr
| Date: Wed, 20 Sep 2000 07:58:30 GMT
| DJ-Gateway: from newsgroup comp.os.msdos.djgpp
| 
| There was a very efficient way to optimize a code with assembler with
| the WATCOM compiler, because it had a disassembler which was able to
| produce compilable and readable asm code. So you just had to :
| - write the code in C
| - optimize the C code
| - compile the C code to obtain a .obj file
| - disassemble the .obj file
| - optimize the .asm obtained
| 
| It was fast and easy because you didn't have to write the asm code from
| scratch.
| 
| I didn't managed to do the same thing with the DJGPP compiler. Has
| anyone already done this ?

It's simpler with DJGPP. There's no need to produce obj and then get
back to asm. Directly from C to asm :-).

Here's how.

gcc -S test.c -o test.S

-- 
Prashant TR <tr AT midpec DOT com>
Web: http://www.midpec.com/