Date:	Wed, 1 Aug 2001 11:56:06 +0300 (IDT)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	"Rafal Maj (Raf256)" <raf256 AT go2 DOT pl>
cc:	djgpp AT delorie DOT com
Subject:	Re: Assembler
In-Reply-To:	<9k7jsa$l5l$1@info.cyf-kr.edu.pl>
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On Wed, 1 Aug 2001, Rafal Maj (Raf256) wrote:

> I have found quite interesting code, that returns exacly number of CPU
> cycles since last reset/power off.
> 
> But I have this "program" writtne in Pascal, how can I translate this into
> C++ DJGPP inlie asembler ?
> 1) Can I write assembler instructions anywhere inside C++ code in DJGPP ?

Yes, you can use inline assembly; it's documented in the GCC manual.

> 2) How can I wrtie\compile in RHIDE  assembler files (any tutuorial ?)

No need for any tutorials, just compile them as usual.  GCC already
knows what to do.

> 3) Ther are two diffrent syntaxes of ASM AFAIK, with ist best, what are they
> names ?

See chapter 17 of the FAQ.

> 4) AFAIR assembler can be written using functions for calling interrupts,
> using
>   inline($AA/...) statment or in real assebler syntax... I'm most interested
> in 3rd
>   possibility...

I have no clue what you are talking about here.

>   "e" - is a hmm... pointer to 64-bit integer
>   0fh is 0x0F in Pascal
>   asm
>     db 0fh, 31h
>     db 66h
>     mov c, dx
>     db 66h
>     mov e, ax
>   end;

0F31h is the opcode of the RDTSC instruction.  So there's nothing
exciting about this code, a couple of programs that use RDTSC were
posted here recently, perhaps in this very thread.

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