I am referring to the next MACHINE instruction after the EQU, note you have
a slack byte between LAB1 and LAB2, here is my example:
000000 00000 00014 1 TESTMAP CSECT ,
000000 07FE 2 BR 14
000002 D506 E000 F000 00000 00000 3 CLC 0(7,R14),0(R15)
000008 4 DS CL5
0000D 5 MYTAG EQU *
00000D 00
00000E D504 F001 1000 00001 00000 6 CLC 1(5,R15),0(R1)
Note that in my case the assembler made it obvious that there is a slack
byte at X'000D' so a branch to MYTAG would result in an 0C1.
On Wed, Oct 2, 2024 at 4:16 PM Tom Brennan <[email protected]>
wrote:
> It better not, otherwise things like this wouldn't give the right length.
>
> STRING DC C'SOME LENGTH STRING'
> STRINGL EQU *-STRING
>
> Loc Object Code Addr1 Addr2 Stmt Source Statement
> 114 *
> 000054 116 START DS CL1
> 00055 117 LAB1 EQU *
> 000056 118 LAB2 DS 0h
> 000056 47F0 C056 00056 120 B LAB2
> 00005A 47F0 C055 00055 121 B LAB1
> ** ASMA212W Branch address alignment for LAB1 unfavorable
>
> On 10/2/2024 1:58 PM, David Spiegel wrote:
> > Hi R'Shmuel AMV"SH,
> > I realize that DS 0H forces alignment. I was wondering if EQU *
> > does/does not.
> >
> > כתיבה וחתימה טובה
> >
> > Regards,
> > David
> >
> >
> > On 2024-10-02 11:33, Seymour J Metz wrote:
> >> It is still true that DS 0H forces alignment.
> >>
> >> --
> >> Shmuel (Seymour J.) Metz
> >> http://mason.gmu.edu/~smetz3
> >> עַם יִשְׂרָאֵל חַי
> >> נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
> >>
> >>
> >>
> >> ________________________________________
> >> From: IBM Mainframe Discussion List <[email protected]> on
> >> behalf of David Spiegel <[email protected]
> >
> >> Sent: Wednesday, October 2, 2024 9:07 AM
> >> To: [email protected]
> >> Subject: Re: Question on HLASM - B to a DROP statement!?!
> >>
> >> Caution: This email did not originate from George Mason’s mail system.
> >> Do not click links or open attachments unless you recognize the sender
> >> and know the content is safe.
> >>
> >>
> >> Hi Allan,
> >> As a rule, "DS 0H" used to be safer than "EQU *" since the former forces
> >> half-word alignment.
> >> (I do not know if that is still true.)
> >>
> >> Regards,
> >> David
> >>
> >>
> >> On 2024-10-02 08:38, Allan Staller wrote:
> >>> Classification: Confidential
> >>>
> >>> Suggested code change to resolve..
> >>>
> >>> -----Original Message-----
> >>> From: IBM Mainframe Discussion List <[email protected]> On
> >>> Behalf Of Steve Thompson
> >>> Sent: Tuesday, October 1, 2024 4:29 PM
> >>> To: [email protected]
> >>> Subject: Question on HLASM - B to a DROP statement!?!
> >>>
> >>> Suggested code change to resolve:
> >>>
> >>> B DROPR11
> >>>
> >>> DROPR11 EQU *
> >>> DROP R11
> >>> LA R1,xxxxx (or something similar)
> >>> ----------------------------------------------------------------------
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