> Is the EX target accessed from the I-cache or the D-cache?

I have forgotten but I know I have seen it documented.

Charles


-----Original Message-----
From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On 
Behalf Of Paul Gilmartin
Sent: Tuesday, November 23, 2021 3:57 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: ASMA030E?

> On Nov 23, 2021, at 15:23:49, Charles Mills <charl...@mcn.org> wrote:
>     ...
>      LA   somereg,=C'blah')
> 
> And an EX rather than an L. Would that work for you? Does require a base
> register. LARL would not, but it's 6 bytes rather than 4.
>  
Does an EX of an LARL displace relative to the location of the EX or thee
LARL?  HLASM can only assume the latter and hope the hardware concurs.
(Is the EX target accessed from the I-cache or the D-cache?)

A harder question might be whether a literal S-constant assumes the USING
in effect at the point of generating the literal or at the LTORG.
Is this documented or does POLA suffice?

(Thinking back a few weeks to a recherché use of a triple S-literal to
generate an SS instruction in the literal pool.)

-- gil

Reply via email to