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Programming > Assembly x86 > Re: Segment pus...
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Re: Segment push in RM

by Cranky <spamtrap@[EMAIL PROTECTED] > Apr 2, 2008 at 08:28 PM

On Apr 2, 1:59 pm, Cranky  <spamt...@[EMAIL PROTECTED]
> wrote:
> 32 Bit PM
> 1. With push segment (no 66h) we get the same as above.
>
> 2. If we add the operand size prefix then the segment registers are
> zero extended. Again this applies to all 6 segment registers.

Umm.. seems like 2. is incorrect as esp is only decrementing by 2, not
sure why I saw zero there as the stack was initialized with 55555555h.
ie

push 55555555h
pop edx
db 66h
push es
pop eax

with a 16bit push I would have expected 5555h as well as ES so when I
saw 0000 and ES I guess I jumped to the wrong conclusion. Sorry.

-- Cranky
 




 21 Posts in Topic:
Segment push in RM
Cranky <spamtrap@[EMA  2008-04-01 00:39:33 
Re: Segment push in RM
Frank Kotler <spamtra  2008-04-01 10:13:49 
Re: Segment push in RM
"Wolfgang Kern"  2008-04-01 14:53:19 
Re: Segment push in RM
"Rod Pemberton"  2008-04-01 06:30:27 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-01 05:52:51 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-01 07:23:22 
Re: Segment push in RM
Frank Kotler <spamtra  2008-04-01 22:04:44 
Re: Segment push in RM
"Rod Pemberton"  2008-04-02 04:05:32 
Re: Segment push in RM
Robert Redelmeier <red  2008-04-02 18:05:57 
Re: Segment push in RM
"Rod Pemberton"  2008-04-02 20:26:45 
Re: Segment push in RM
Robert Redelmeier <red  2008-04-03 21:30:34 
Re: Segment push in RM
"Rod Pemberton"  2008-04-03 21:23:12 
Re: Segment push in RM
"Wolfgang Kern"  2008-04-04 17:40:22 
Re: Segment push in RM
Robert Redelmeier <red  2008-04-04 20:19:13 
Re: Segment push in RM
"Rod Pemberton"  2008-04-05 07:53:21 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-01 23:59:11 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-02 21:03:26 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-02 20:28:18 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-03 23:33:40 
Re: Segment push in RM
"Rod Pemberton"  2008-04-05 07:30:07 
Re: Segment push in RM
Cranky <spamtrap@[EMA  2008-04-06 11:42:55 

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