Tom, Thank you, I have his great presentation and John gave me so code, and who said we old folks cant change....
Scott J Ford Software Engineer http://www.identityforge.com ________________________________ From: Tom Marchant <m42tom-ibmm...@yahoo.com> To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Sent: Tuesday, June 5, 2012 5:19 PM Subject: Re: Base registers On Tue, 5 Jun 2012 15:59:36 -0400, Scott Ford wrote: >where can you find a good sample of baseless assembler code ? Look for Ed Jaffe's SHARE presentation "Jumpify your code". "Baseless" is not an accurate description, IMO. You still need base registers to reference data. You can, however, use very few base registers for your code simply by using relative branches ("jump"). There are one or two exceptions, depending upon your hardware. One is that there is no indexed relative branch. It's hard for me to imagine what such a thing would do anyway. The other is that EXRL was introduced (IIRC) on the z10. The standard EXecute instruction requires a base register. -- Tom Marchant
