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Programming > Assembly 370 > Re: Assembler: ...
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Re: Assembler: alignment of machine instructions

by richgr@[EMAIL PROTECTED] (Rich Greenberg) Jul 13, 2005 at 09:37 PM

In article <42d5840c$0$21446$ba620e4c@[EMAIL PROTECTED]
>,
Michel Castelein <arcis@[EMAIL PROTECTED]
> wrote:
>A DC or DS instruction with a zero duplication factor forces boundary 
>alignment, even when the NOALIGN assembler option is in effect.
>
>At the other hand, IMHO, the assembler always aligns machine instructions
on 
>a halfword boundary.
>
>So, I'm wondering why the expansion of the SAVE macro begins with a DS
0H.
>
>That's redundant, isn't it?
>
>Or are there some historical reasons? If yes, which ones?

I think that SAVE has both list and execute forms as well as normal, and
the DS 0H is probably in common code before the forms diverge.

-- 
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 13 Posts in Topic:
Assembler: alignment of machine instructions
"Michel Castelein&qu  2005-07-13 23:13:45 
Re: Assembler: alignment of machine instructions
richgr@[EMAIL PROTECTED]   2005-07-13 21:37:48 
Re: Assembler: alignment of machine instructions
Binyamin Dissen <posti  2005-07-14 11:26:02 
Re: Assembler: alignment of machine instructions
"arargh" arargh  2005-07-13 18:00:03 
Re: Assembler: alignment of machine instructions
glen herrmannsfeldt <g  2005-07-13 21:27:03 
Re: Assembler: alignment of machine instructions
glen herrmannsfeldt <g  2005-07-19 13:43:28 
Re: Assembler: alignment of machine instructions
Binyamin Dissen <posti  2005-07-14 11:26:04 
Re: Assembler: alignment of machine instructions
"John Small" &l  2005-07-14 10:50:59 
Re: Assembler: alignment of machine instructions
glen herrmannsfeldt <g  2005-07-25 16:03:55 
Re: Assembler: alignment of machine instructions
"Michel Castelein&qu  2005-07-26 08:25:21 
Re: Assembler: alignment of machine instructions
"Sven Pran" <  2005-07-27 09:45:31 
Re: Assembler: alignment of machine instructions
beu@[EMAIL PROTECTED] (B  2005-07-27 20:50:58 
Re: Assembler: alignment of machine instructions
"Sven Pran" <  2005-07-28 00:11:47 

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