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Index > Main > FASM for Intel® Pentium® 4 processor?

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fasm9



Joined: 19 Jun 2003
Posts: 439
fasm9
i wonder that does FASM use all features of p4.
http://www.intel.com/products/desktop/processors/pentium4/

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Post 15 Dec 2003, 03:17
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roticv



Joined: 19 Jun 2003
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Location: Singapore
roticv
I beg your pardon. What do you mean by all the features?
Post 15 Dec 2003, 04:22
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scientica
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Joined: 16 Jun 2003
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scientica
I think he means some HT or hint instructions, that were (iirc) introduced in the P4.

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Post 15 Dec 2003, 05:44
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fasm9



Joined: 19 Jun 2003
Posts: 439
fasm9
Thanks! yes. that's what i meant.

flatassembler.net wrote:
The flat assembler is a fast and efficient self-assembling 80x86 assembler for DOS, Windows and Linux. It supports all 8086-80486/Pentium instructions with MMX, SSE, SSE2 and 3DNow! extensions, can produce output in binary, MZ, PE or COFF format. Has the advanced but easy to use macroinstruction support and does multiple quick passes to optimize the code for size. It is self-compilable and the full source code is included.


still, it's sounds unclear to me.

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if i understood FASM totally, i think i can help FASM, but not now.
Post 15 Dec 2003, 06:18
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Tomasz Grysztar



Joined: 16 Jun 2003
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Tomasz Grysztar
SSE2 is a PIV extension of IA-32 architecture instructions.
Post 15 Dec 2003, 09:28
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MazeGen



Joined: 06 Oct 2003
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MazeGen
Does FASM support any mnemonics for jcc hints (prefix 2E not taken and 3E taken, P4+ feature) and PNI (Prescott new instructions)?

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Post 15 Dec 2003, 18:17
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Tomasz Grysztar



Joined: 16 Jun 2003
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Tomasz Grysztar
Intel haven't defined any menmonics for the branch hints, and so there are none in fasm - but as they share the same opcodes as the segment prefixes, you can define your own mnemonics (any variant you prefer) like:
Code:
ut equ cs ; "unlikely taken" jump
lt equ ds ; "likely taken" jump    

and use them like:
Code:
ut jne error    
Post 15 Dec 2003, 18:28
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Tomasz Grysztar



Joined: 16 Jun 2003
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Location: Kraków, Poland
Tomasz Grysztar
And about PNI - they are not the part of the PIV specification (at least not in the books I've got from the Intel), it seems that it's something really new. Thank for pointing it out to me - I'll have to work on encoding them in the next version of fasm.
Post 15 Dec 2003, 18:44
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MazeGen



Joined: 06 Oct 2003
Posts: 977
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MazeGen
Thanks, Privalov Smile

BTW, here is the link, if somebody wants to study:
Prescott New Instructions Technology

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Post 15 Dec 2003, 20:12
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