On 12/7/22 10:01:33, Steve Smith wrote:
"The second operand is two bytes in length and is treated as a 16-bit
signed binary integer."
So, I think it's just a bug. I haven't had occasion to use -1 with CHSI,
etc., but I have with MVHI, etc. and no such warning is emitted.
It appears that
On Wed, 7 Dec 2022 at 14:28, Ed Jaffe wrote:
> On 12/7/2022 9:12 AM, Gord Tomlin wrote:
> >
> > Maybe replace CLHHSI with CHHSI, which is designed for signed values:
>
> Duh! I would have suggested that myself had I read PoOp more carefully...
>
> Thanks, Gord!
>
But if you're doing a mass
On 12/7/2022 9:12 AM, Gord Tomlin wrote:
Maybe replace CLHHSI with CHHSI, which is designed for signed values:
Duh! I would have suggested that myself had I read PoOp more carefully...
Thanks, Gord!
--
Phoenix Software International
Edward E. Jaffe
Chief Technology Officer
831 Parkview
That text is for, e.g., compare halfword immediate (CHHSI), not for CLHHSI.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Steve Smith [sasd...@gmail.com]
Sent:
On 2022-12-07 10:46 AM, Ed Jaffe wrote:
We decided to replace many SS instructions with their SIL counterparts.
One common case is frustrating.
D501 C01E C020 CLC HWord,=H'-1' Is it negative one?
A784 000C JE NegOne Branch if yes
replaced with:
E555
Ooops. Missed that you were using the CL* version. No such thing as
negative numbers in logical land.
sas
On Wed, Dec 7, 2022 at 12:00 PM Ed Jaffe
wrote:
> On 12/7/2022 8:20 AM, Seymour J Metz wrote:
> > When you code an immediate operand, it has semantics beyond the
> generated code. An
"The second operand is two bytes in length and is treated as a 16-bit
signed binary integer."
So, I think it's just a bug. I haven't had occasion to use -1 with CHSI,
etc., but I have with MVHI, etc. and no such warning is emitted.
sas
On Wed, Dec 7, 2022 at 11:20 AM Seymour J Metz wrote:
>
On 12/7/2022 8:20 AM, Seymour J Metz wrote:
When you code an immediate operand, it has semantics beyond the generated code.
An operand of -1 is signed and not equivalent to X'', even though they have
the same value. The instruction is compare logical half half storage immediate,
thus the
When you code an immediate operand, it has semantics beyond the generated code.
An operand of -1 is signed and not equivalent to X'', even though they have
the same value. The instruction is compare logical half half storage immediate,
thus the assembler expects the immediate operand to be
We decided to replace many SS instructions with their SIL counterparts.
One common case is frustrating.
D501 C01E C020 CLC HWord,=H'-1' Is it negative one?
A784 000C JE NegOne Branch if yes
replaced with:
E555 C01E CLHHSI HWord,-1 Is
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