Thanks. What is the relevance to my question? (How do I obtain the contents of R0 on entry to a C program from Rexx?)
Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Seymour J Metz Sent: Friday, October 28, 2022 3:02 PM To: [email protected] Subject: Re: XLC C/C++, __R1 and Register 0 There are three cases 1. address foo bar baz Pass command bar baz to environment foo address foo bar baz 2. call bar baz Invoke bar with parameter baz; return value optional 3. bar(baz) in an expression Invoke bar with parameter baz; return value required The last two cases are essentially the same. In the first case the value of baz is passed as a single parameter even if it contains spaces or commas, but the command processor for the environment may parse it into subparameters. In the second and third cases baz must be a list of expressions, separated by commas; there are no constrains on the values of those expressions. z/OS 2.5 TSO/E REXX Reference, SA32-0972-5, contains details in Chapter 12. TSO/E REXX programming services and Chapter 14. Language processor environments ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
