November 2007 - Darwin-kernel

Re: incomplete kgmacros
by Terry Lambert 16 Nov '07

16 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com (gdb) source ~/kgmacros Loading Kernel GDB Macros package. Type "help kgm" for more info. /Users/druid/kgmacros:124: Error in sourced command file: No struct type named mach_header. -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… On Nov 15, 2007, at 5:16 PM, Chris Neustrup wrote: In using gdb, I want to use the appropriate kgmacros file. My kernel is currently 10.4.10, xnu-792.22.6~1. When I start gdb / mach_kernel, I can load symbols for the kernel. When I source the kgmacros, I get the following message: Where can I get the correct kgmacros file? You are attempting this cross-architecture, and didn't specify -arch <kernel arch> to gdb. This email sent to site_archiver(a)lists.apple.com

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incomplete kgmacros
by Chris Neustrup 16 Nov '07

16 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Thunderbird 2.0.0.6 (Macintosh/20070728) (gdb) source ~/kgmacros Loading Kernel GDB Macros package. Type "help kgm" for more info. /Users/druid/kgmacros:124: Error in sourced command file: No struct type named mach_header. Where can I get the correct kgmacros file? Thanks in advance, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… In using gdb, I want to use the appropriate kgmacros file. My kernel is currently 10.4.10, xnu-792.22.6~1. When I start gdb /mach_kernel, I can load symbols for the kernel. When I source the kgmacros, I get the following message: This email sent to site_archiver(a)lists.apple.com

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missing driver function names
by Chris Neustrup 16 Nov '07

16 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Thunderbird 2.0.0.6 (Macintosh/20070728) #0 0x001a9fb3 in Debugger () #1 0x00128d08 in panic () #2 0x001a4a55 in kernel_trap () #3 0x0019aeb4 in lo_alltraps () #4 0x0012eaad in lck_mtx_sleep_deadline () #5 0x00347413 in uiomove () #6 0x0034788e in msleep () #7 0x8e701669 in ?? () #8 0x8e7018ff in ?? () #9 0x8e6f985a in ?? () #10 0x0038d522 in IOService::startCandidate () #11 0x0038eda1 in IOService::probeCandidates () #12 0x0038e609 in IOService::doServiceMatch () #13 0x0038fd4e in _IOConfigThread::main () Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm using the 2 machine debugging facility over firewire. I've copied all symbols files to a local dir on my debugger machine. When I ask for the backtrace, I get the following: Notice that the symbols for the kernel are OK. The missing ?? are most likely routines in my driver. It points up that the symbols were not built correctly. The address of my load is 0x8E61E000. What am I missing? This email sent to site_archiver(a)lists.apple.com

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OS bug or installer issue?
by Eric Long 15 Nov '07

15 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: Acgn1N8fHcf9VZPIEdyp9QAX8si2KA== Thread-topic: OS bug or installer issue? User-agent: Microsoft-Entourage/11.3.6.070618 Hi, I have a kext that subclasses IOBlockStorageDriver, and similar kexts for variant storage drivers, such as IOCDBlockStorageDriver and IODVDBlockStorageDriver. On 10.4.x, after the first reboot following install (whether by installing manually or by using an Apple Installer installer) only the kext with the IOBlockStorageDriver subclass seems to be probed. The others appear to be ignored by the OS. Once the machine is rebooted again, forever after things work as they should. We have not reproduced this problem on an Intel Mac nor on 10.5.x with any Mac, thus far. This seems to be a kext cache anomaly, but even if I remove /System/Library/Caches/com.apple.kernelcaches, /System/Library/Extensions.mkext, and /System/Library/Extensions.kextcache, after install, the problem persists. Has anyone else seen a problem like this? Know a workaround? Thanks, Eric _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Can I boot 32-bit on a Mac with more than 4 Gb of RAM?
by Shantonu Sen 15 Nov '07

15 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com You can simulate reducing memory to 512MB with sudo nvram boot-args="maxmem=512" Shantonu Sen On Nov 14, 2007, at 8:12 PM, Michael Crawford wrote: Is there a way to make a Mac that has more than 4 gigabytes of RAM boot in 32-bit mode? Such as an nvram boot-args setting? That would of course mean that some RAM becomes inaccessible. I want to do this to ease test coverage for the QA of my driver, so that I can leave all the memory installed in my ordinarily 64-bit Mac, but test my driver running under a 32-bit kernel. Note that anytime one removes or adds memory, there is some risk of damaging either the memory module or the motherboard, due to static electricity and the like. Thanks! Mike -- Michael David Crawford mdcrawford at gmail dot com Enjoy my art, photography, music and writing at http://www.geometricvisions.com/ --- Free Music Downloads --- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/ssen%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Mac OS X uses a 32-bit kernel on both 32-bit and 64-bit capable processors. This email sent to ssen(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Can I boot 32-bit on a Mac with more than 4 Gb of RAM?
by Michael Crawford 15 Nov '07

15 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; bh=+PgPoRzJYpNitQU6WDTFNYAk2sEyf7j3WCEUlgyToxU=; b=Xn2OAk/SiQDLC0xOmT07irn2y9i3ekalsdHb9Fdv97LHj6WrEcAUBQFBQwI/dOWr3ppeTa9vMXSYnlAb6X903PRt4Zq75hOVh/XQkfmE4yvAklV8EUKPrEVGMQfCOsr5HMFwVSWmnljZlVu+H5518PI21IR0aXP1H2EWIR3pwrE= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=i793yYRzPXf/m85v6GKMH7NyCTOfG49ouzL3oggT/lwg1Kyez32ApkQYDB56hptLasvxSTOQXSjWY0LcN4I3Piz6zQ90upYCn2BYcyxkXprvYxkdi4ofWPTzHL8XJ2dMykIbimfhCIv+ZGv3nSVESQIQdY4DJAdVqZnsEYClWxo= Is there a way to make a Mac that has more than 4 gigabytes of RAM boot in 32-bit mode? Such as an nvram boot-args setting? That would of course mean that some RAM becomes inaccessible. I want to do this to ease test coverage for the QA of my driver, so that I can leave all the memory installed in my ordinarily 64-bit Mac, but test my driver running under a 32-bit kernel. Note that anytime one removes or adds memory, there is some risk of damaging either the memory module or the motherboard, due to static electricity and the like. Thanks! Mike -- Michael David Crawford mdcrawford at gmail dot com Enjoy my art, photography, music and writing at http://www.geometricvisions.com/ --- Free Music Downloads --- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Kernel Newbie
by Quinn 14 Nov '07

14 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 12:40 +0000 12/11/07, Gavin Brewer wrote: As I have no experience with Kernel hacking, I would like to be gently inducted into Kernel Development by starting with a succession of simple projects. What area of the kernel are you interested in? Each of the three main subsystems within the kernel (Mach, BSD, I/O Kit) has a radically different style. So, if, for example, I pointed you to an I/O Kit introduce, it wouldn't help you much if you were actually interested in BSD or Mach. This email sent to site_archiver(a)lists.apple.com

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Re: Firewire debugging
by Carlos Calderon 14 Nov '07

14 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com // carlos On Nov 13, 2007, at 6:03 PM, Carlos Calderon wrote: Hi Chris, // carlos On Nov 13, 2007, at 5:56 PM, Chris Neustrup wrote: Thanks in advance, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/carlos%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Another note: if you have trouble with the FireWireKDPProxy in SDK25, try an older FireWireKDPProxy if you have one (from say SDK24); that should work. Of course, once SDK26 comes out, you won't need to do this. As always, you can find the latest FireWire debugging tools within the FireWire SDK posted at <http://developer.apple.com/sdk>. The latest FireWire SDK is version 25. In the current SDK, there is an issue with the FireWireKDPProxy when using it on PPC. The next release of the SDK will contain a fix for this issue. The FireWireKDP readme is helpful for getting remote FireWire debugging working. Once the SDK is installed, it is located at: "/Developer/FireWireSDK25/Tools/FireWireKDP 1.3.9/FireWireKDP ReadMe.rtf" I'm trying to set up firewire debugging between my pro desktop and a mini. I've read some useful help on the mailing lists. Unfortunately, I've just discovered that my AppleFireWireKDP.kext is dated July 25, and list chatter talks about a version newer than late September. Can I get a newer one somewhere? And there was a hint to read the read me: There are about 7 Readme files in this tree. This email sent to carlos(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/carlos %40apple.com This email sent to carlos(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Firewire debugging
by Carlos Calderon 14 Nov '07

14 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Chris, // carlos On Nov 13, 2007, at 5:56 PM, Chris Neustrup wrote: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… As always, you can find the latest FireWire debugging tools within the FireWire SDK posted at <http://developer.apple.com/sdk>. The latest FireWire SDK is version 25. In the current SDK, there is an issue with the FireWireKDPProxy when using it on PPC. The next release of the SDK will contain a fix for this issue. The FireWireKDP readme is helpful for getting remote FireWire debugging working. Once the SDK is installed, it is located at: "/Developer/FireWireSDK25/Tools/FireWireKDP 1.3.9/FireWireKDP ReadMe.rtf" I'm trying to set up firewire debugging between my pro desktop and a mini. I've read some useful help on the mailing lists. Unfortunately, I've just discovered that my AppleFireWireKDP.kext is dated July 25, and list chatter talks about a version newer than late September. Can I get a newer one somewhere? And there was a hint to read the read me: There are about 7 Readme files in this tree. Thanks in advance, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/carlos %40apple.com This email sent to carlos(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Firewire debugging
by Chris Neustrup 14 Nov '07

14 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Thunderbird 1.5.0.7 (X11/20070925) Thanks in advance, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm trying to set up firewire debugging between my pro desktop and a mini. I've read some useful help on the mailing lists. Unfortunately, I've just discovered that my AppleFireWireKDP.kext is dated July 25, and list chatter talks about a version newer than late September. Can I get a newer one somewhere? And there was a hint to read the read me: There are about 7 Readme files in this tree. This email sent to site_archiver(a)lists.apple.com

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