Matthias Trute <mtr...@web.de> writes: > Hi, > >> "-int" (int-off.asm) counterpart is "int_restore" (int-restore.asm). So, >> why is this "int_restore" header commented out, i.e., not available to >> the high level? > > uhm. yes. These words are one of very first ones, that fell out of > scope later on. > > >> Candidly, as "+int" (int-on.asm) is a simple SEI instruction (Set Global >> Interrupt Flag) one would expect "-int" to be a simple CLI (Clear Global >> Interrupt Flag) but this is not the case... >> >> May I suggest: >> >> +int → SEI >> -int → CLI > > Thats fine. >> int_suspend → ( -- SREG ) CLI >> int_restore → ( SREG -- ) > > These words are not really needed. > > \ get the I flag as a forth flag > : int? SREG c@ SREG_I and 0> ; > > \ to be used in pairs within the same colon definition > \ can be nested > : critical[ > int? r> swap >r >r \ keep the current state > -int \ turn interrupts off > drop \ currently the content of SREG. > ; > > : ]critical > r> r> if +int then >r \ will crash if not matched > ; > > \ test case. foo prints bar-1 baz0 qux-1 > > : bar ." bar" int? . ; > : baz ." baz" int? . ; > : qux ." qux" int? . ; > > : foo > bar > critical[ > \ nothing will disturb us here > baz > ]critical \ now interrupts or other things may happen again > qux ;
I like these "critical[" "]critical" words, much better than int_suspend and int_restore, but I prefer their current asm code implementation since one would like to keep the criticial code execution to the minimum. Thanks, Enoch. > > > ------------------------------------------------------------------------------ > The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, > is your hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials, tech docs, > whitepapers, evaluation guides, and opinion stories. Check out the most > recent posts - join the conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Amforth-devel mailing list for http://amforth.sf.net/ > Amforth-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/amforth-devel ------------------------------------------------------------------------------ The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials, tech docs, whitepapers, evaluation guides, and opinion stories. Check out the most recent posts - join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
