While we're here, I would like to politely dispute the IBMer's implication (and I apologize for forgetting his name and for paraphrasing) that all you have to do is code the macros as documented and all will be well. I would suggest that one cannot write reentrant or otherwise "special" assembler code (and if you're not writing "special" code -- why are you writing in assembler rather than COBOL or the like to begin with?) without sometimes using hand-coded assembler rather than macros, or at least without carefully checking the PRINT GEN output, rather than just coding macros "as documented" in COBOL-like bliss that all will be well. In many cases one must do both: code the macros, check the PRINT GEN output to reverse engineer how the interface works, and then hand-code equivalent assembler that will actually assemble without error and/or work.
One GREAT example is the IBM macros' use of branch rather than jump instructions. Yes, they work as documented, but they conflict with the exploitation of the (wonderful!) new base-register-constraint-relief jump instructions. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Edward Jaffe Sent: Thursday, March 22, 2007 5:03 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Macro List/Execute Forms (Was: Need help with Assembler ...) Ray Mullins wrote: > Steve, welcome to MF=L/E land. > > Note - the following is really simple, and merely a starting point. > [snip] > It's good practice to generate an MF=L list in your constant area so you can > define the MF=E area properly. It's not so important for OPEN, but for > things like ATTACH that have a lot of bits set, it's a lifesaver. > There are actually two different macro list/execute techniques. 1. The older macros use what is known as the "conventional" list form. Etc. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
