I think this is exactly what I am looking for. Thank you.
________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of
Steve Smith <sasd...@gmail.com>
Sent: Sunday, March 26, 2023 5:35 PM
To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU>
Subject: Re: ASM call by value
I forgot to mention, to pass by value with CALL, you need [a] register[s].
e.g.:
void foo(int i, int j , &int k)
{
k = i + j;
}
* ASM
L R2,xyz
LHI R3,1
CALL FOO,((R2),(R3),BAR)
...
XYZ DS F
BAR DS F
Depending on # of registers available vs. # of value parms, CALL may become
infeasible.
sas
On Sun, Mar 26, 2023 at 6:36 PM Tony Thigpen <t...@vse2pdf.com> wrote:
> No. You will need to create a proper C-style parm list, load it's
> address into R1, and branch to the C routine address without using the
> CALL macro.
>
> Tony Thigpen
>
> Frank Swarbrick wrote on 3/26/23 17:35:
> > Can the MVS CALL macro be used to call a C function with "value"
> parameters (rather than reference parameters)?
> >
> >
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