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#uml IRC Logs for 2007-10-26

---Logopened Fri Oct 26 00:00:35 2007
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04:39<pieter-#uml->>Hello
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09:51<xme_-#uml->>Anyone care to help with a slirp issue?
09:53<xme_-#uml->>hallo? anybody home?
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09:57<dang-#uml->>Man. If I'd only had the NBMA GRE a year ago, I'd have been one happy UML camper...
10:04<xme-#uml->>Anyone care to help with a slirp issue?
10:17<dang-#uml->>I've never used slirp, sorry...
10:20<xme-#uml->>thanks for answering... everybody else here is in another time zone i think...
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10:47<pieter-#uml->>how do I export the host machines serial ports to the UML ?
10:52<dang-#uml->>Good question. That could be really useful for me...
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11:10<dgraves-#uml->>dang: pieter, can't you just use the real ports?
11:11<Magotari-#uml->>Maybe using ssl=<something>? I use the port channel, and I guess you could telnet to the port, and then redirect to the real port...
11:12<dang-#uml->>dgraves: I've never tried...
11:14[~]dgraves #uml thought he read somewhere you could give it the real device.#uml-> thought he read somewhere you could give it the real device.
11:15<dang-#uml->>Maybe you can.
11:15<dang-#uml->>What I really want is good virtual serial connections, but that doesn't exist...
11:15<dang-#uml->>You can do it on-the-fly from inside, but I need to be able to set it up ahead of time outside.
11:15<dang-#uml->>(like I can with ethernet)
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11:32<jdike-#uml->>Hi guys
11:36<dgraves-#uml->>yoo@!
11:41<Magotari-#uml->>Hey, jdike. I have been working a lot on the cmov thingy. I must say, it is quite a bit more difficult than I had imagined. SIGILL is properly generated and handled, but the handler returns right in front of the instruction again. SIGILL. Ad infinitum.
11:41<Magotari-#uml->>Someone told me to modify the return stack.
11:41<Magotari-#uml->>And I had the idea to just replace the instruction with nops.
11:41<Magotari-#uml->>So far no luck, but still trying.
11:42<jdike-#uml->>no
11:42<jdike-#uml->>there are two things you can do
11:42<jdike-#uml->>have a child process try the cmov
11:42<jdike-#uml->>longjmp out of the SIGILL handler
11:42<Magotari-#uml->>Yeah, longjmp is the third idea I saw. But I will try in a child. Thanks for the hint.
11:43<jdike-#uml->>look at start_ptraced_child
11:43<Magotari-#uml->>Sec.
11:43<jdike-#uml->>it's tuned for checking out ptrace, so it might need changes
11:43<jdike-#uml->>but I would just longjmp out of the handler
11:49[~]dgraves #uml awards a long jump medal to Magotari #uml-> awards a long jump medal to Magotari
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12:08<jdike-#uml->>BTW, if you do the longjmp, make sure that sigaction has sa_mask=0 and sa_flags has SA_NODEFER
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---Logclosed Sat Oct 27 00:00:49 2007