jsb@cs.brown.edu (John Bazik) (02/20/91)
Has anyone out there successfully incorporated gnuemac's unexec routine into perl using Tom Christiansen's hook (in pl38 and later) on a Sun4? I've tried, but, apparently, I didn't hook it up right to perl. What I tried was to pick out the sun4-specific parts of crt0.c from the gnu code and load that first (along with unexec.o, of course) when I build perl. The result compiles and loads but does nothing when I use the -u switch. If you've done it, please tell me how! Alternatively, if anyone has an undump that works on sun4s with perl, I'd love to hear of it. John Bazik jsb@cs.brown.edu
tchrist@convex.COM (Tom Christiansen) (02/20/91)
From the keyboard of jsb@cs.brown.edu (John Bazik): :Has anyone out there successfully incorporated gnuemac's unexec routine :into perl using Tom Christiansen's hook (in pl38 and later) on a Sun4? : :I've tried, but, apparently, I didn't hook it up right to perl. : :What I tried was to pick out the sun4-specific parts of crt0.c from the :gnu code and load that first (along with unexec.o, of course) when I build :perl. The result compiles and loads but does nothing when I use the -u :switch. does nothing -- why don't you open /dev/tty and trying writing there. i'm not sure that fd's 0, 1, and 2 are in a good state when you come back. they certainly aren't if you use undump (unless you don't really call abort()). :Alternatively, if anyone has an undump that works on sun4s with perl, I'd :love to hear of it. I got a new undump that works on Sun3's at 4.1 iff you change the abort in perl to kill(getpid(), SIG_ILL) as God intended it to be. :-) Haven't tried it on sun4's yet. --tom -- Tom Christiansen tchrist@convex.com convex!tchrist "All things are possible, but not all expedient." (in life, UNIX, and perl)