? From: SMTP%"system@lokidev.attmail.com" 20-AUG-1996 17:38:19.66 To: everhart@star.zko.dec.com CC: Subj: inventiveness??? Hi Glenn, F The closing paragraphs of your letter which you said you had forwardedE to Dave Schmidt said that I showed unusual ability and inventiveness. D Well, I've spent the day exercising that unusual inventiveness again with SSINT. E I realized that what I sent you could only be used to intercept those E services which were not 64 bit or did not get 64 bit enhanced. Using C the homed argument approach and then, invoking the original service E routine via the CALLG meant that the original routine would be called E with 32 bit sign-extended argument values, at least for the first siz F which is what happens when you specify HOMED_ARGS=TRUE. Not to worry! E I, essentially, rolled my own argument homing macro which can be used E with the EVAX_CALLG_64 built-in. THis is the better approach because E calling the original routine is done with a full 64 bits in registers C R16 through R21 and the remaining args (stacked) are already 64 bit ready. D This is easily accomplished with a macro I built that I have called:E $SETUP_CALLG_64 to parallel Digital's 64 bit macros of similar naming C convention. The macro simply subtracts <argcnt+1>*8 from the stack C pointer and then uses the EVAX_STQ built-in to move all of the args ! to this stack space, for example: EVAX_SUBQ SP,#<NARGS+1>*8,SP EVAX_LDAQ Rx,(SP) EVAX_STQ 0(AP),(Rx)+ EVAX_STQ 4(AP),(Rx)+ EVAX_STQ 8(AP),(Rx)+ ..." EVAX_STQ <<NARGS+1>*8>(AP),(Rx)+ EVAX_LDAQ Rx,(SP) 9 You then call the routine via EVAX_CALLG_64 (Rx),ROUTINE. 1 It works great for either 32 ot 64 bit addresses! E I also took care of the linker error LINK-W-MULTFR by playing another D overlaying psect game and specifying the global label LIB$INITIALIZEE which the linker automatically then make the first entry in the image D transfer vector. Carefully overlaying this atop of the SSINT$DOINITD routine makes it the first entry in the transfer vector and the realE DOINIT routine is the second entry. This doesn't affect anything be- E cause the execlet loader only looks at the first transfer vector slot E and invokes the address it finds there as the initialization routine! E I had a little free time today so it was play time. I've been sooooo D busy that all the 64 bit stuff I've done was basically the "robotic"C things that needed to be changed according to the "64 bit Upgrading E Guide". I really needed to get in there and play with 64 bits to get a good grasp of it all. E Anyway, the latest SSINT is on its way (V1.3%6.233.) MFTU encoded ZIP C as always. I hope it's not too late to get this version on the SIG 3 tapes. Don't stop the presses on my accord though. VAXman- E For without are dogs, and sorcerers, and whoremongers, and murderers, E and idolaters, and whosoever loveth and maketh a lie. - Revelation - 5 ================== RFC 822 Headers ================== ' Return-Path: system@lokidev.attmail.com A Received: by galaxy.zko.dec.com (UCX V4.0-10B, OpenVMS V6.2 VAX); Tue, 20 Aug 1996 17:38:12 -0400Y Received: from mdau.md.mt.np.els-gms.att.net by mail11.digital.com (8.7.5/UNX 1.2/1.0/WV) 3 id RAA26565; Tue, 20 Aug 1996 17:17:06 -0400 (EDT) % Date: Tue, 20 Aug 1996 16:34:29 -0500 B From: system@lokidev.attmail.com ("Brian Schenkenberger, VAXman-")< Received: from lokidev by attmail; Tue Aug 20 21:15 GMT 1996+ Received: from alpha by oadec (OADEC V3.0); ' Tue Aug 20 16:34:29 EDT 1996 Subject: inventiveness??? To: everhart@star.zko.dec.com > X-VMS-Mail-To: OA%"attmail!internet!star.zko.dec.com!everhart" Mime-Version: 1.0 * Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit 6 Message-ID: <ATT-OADEC-3.0-00-system-EC12B601009A723D>
