November 2007 - Darwin-kernel

Patch for HPET
by David Elliott 13 Nov '07

13 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi, Thanks, -Dave _______________________________________________ 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 Although I realize Apple has stated that they have little interest in Darwin running on non-Apple hardware, the attached patch carefully modifies the in-kernel HPET initialization to first check to make sure a device exists at 00:1f.0 before reading the RCBA from it. This and another patch I am still working on allows xnu to be booted under VMware Fusion. I've also highlighted what I believe to be a bug in the code. Intel's documentation clearly states that bits 31:14 are valid. Furthermore, they state that the address is aligned on a 16-kb boundary. It's in section 10.1.27 of the ICH6 documentation on page 361. I cannot imagine that newer ICH have decreased the alignment requirements to 4- KB instead of 16-KB. Technically the code should probably also check the enable bit (bit 0) but in practice I can't imagine that any sane system would have the RCBA disabled. Since VMware doesn't emulate an LPC in the first place, I have no idea whether or not such a patch would be desirable and thus didn't include it. I hope this patch is well received. I am striving to make things work for me on my Mac with widely available virtualization programs without doing radical changes to xnu that may make the code unacceptable for Apple's primary purpose of making it run on bare Apple hardware. xnu-1228_hpet.patch

1 0

Re: An End-User Question: Darwin 9.0 on OS X 10.4
by mm w 13 Nov '07

13 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:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=bRsca2jaHZ00M/AEFnayCJD6D2gYyySymfnbhTSY7MQ=; b=csjfYvWNso1re62GRc6kHXkzXswLNG62z7FpQ/OkJa2WeS9j5PeaXHprztvN9Se32pI5y73ktu1my9j+Kv24F7a8GUgKHM2jNn95wAsL8kFXZuOgymxPBy7WIDsFbA+iCZDKu8jGWFzQYxTAg8avkvMrqGV0QXnoLHYk8pTo5p4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=B0nqRzHXJ0mW2F5q/SxgSC9XYVSbtyz3jj3EFJDOxKkZddJCPWoF0Sqg5+dfqEsjZtCuUF1EVWGNssWXaPsazzVTu2CFBLfv/8J+qJOpGpA2KMD5xZJXoqjq1QhNDSOONbcDUNYOObiqqhFa+7C/HZ6ZMaT0EwYW0zcwvu93uck= ``Though I've tried to find the answers to all the questions they ask.` -mmw On Nov 12, 2007 8:45 PM, Shantonu Sen <ssen(a)apple.com> wrote: > The short answer is no. > > The long answer... is also no. > > What are you really trying to do? No, you can't synthesize a free > version of Mac OS X by using the Darwin source and duct tape. > > Shantonu Sen > > On Nov 12, 2007, at 11:09 AM, Charles Darwin wrote: > > > Is that possible? > > > > Charles > > _______________________________________________ > > 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 > > > > This email sent to ssen(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/openspecies%40gmail.com > > This email sent to openspecies(a)gmail.com > -- echo zapydapntpd.rxltw@nzx | tr a-z@. p-za-o.@ _______________________________________________ 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

1 0

Re: An End-User Question: Darwin 9.0 on OS X 10.4
by Shantonu Sen 13 Nov '07

13 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com The short answer is no. The long answer... is also no. Shantonu Sen On Nov 12, 2007, at 11:09 AM, Charles Darwin wrote: Is that possible? Charles _______________________________________________ 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.… What are you really trying to do? No, you can't synthesize a free version of Mac OS X by using the Darwin source and duct tape. This email sent to ssen(a)apple.com This email sent to site_archiver(a)lists.apple.com

1 0

An End-User Question: Darwin 9.0 on OS X 10.4
by Charles Darwin 12 Nov '07

12 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:mime-version:content-transfer-encoding:message-id:content-type:to:subject:date:x-mailer:from; bh=Gr/cm5sMZRSyVwkNKcAMHva2W0yUz9I9RHLc0m0xOAM=; b=g6+PAMvlC+WGKluhRdSei2icY3OKfyvFDHmJuhlFQjr/6UAuEEat5WXjreGmQVd/ynf9Ts0wcpE/RjQzWtuyHREbyIBv7RJyjcH0/awwMpcuSyOpiOk+ETopCTZumfrAISzkD5xpFK2o4iGTEmTz9pWFrAzVn0Yo3sRAP+ZWkDw= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:mime-version:content-transfer-encoding:message-id:content-type:to:subject:date:x-mailer:from; b=PoWz9RPXxiSi8dCx1sBMdkoPX4zE1WTpMMUAc00KiNOmGG5tnZZPtmeadvMEs3yJTE9c1SZJU+jF1aMFAwP8lz4X/3/ayOf8v2nY9UH/96jNfBNwokZUHHr3MPN9hsfCqMhuWF2yx1vGBY6TJQsKCBHp+VQmEtM1gXDr8KNwpsg= Is that possible? Charles _______________________________________________ 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

1 0

Re: Kernel Newbie
by Alexander von Below 12 Nov '07

12 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com http://www.osxbook.com Alex Am 12.11.2007 um 13:40 schrieb Gavin Brewer: Folks, I am aware that this is a FAQ, but I am submitting anyway. Could someone offer me advice/pointers/links on how to proceed? Thank you for your time, Gavin. Gavin Brewer Junior Software Engineer Axicon Auto ID Ltd gb(a)axicon.com -- Axicon Auto ID Ltd. Church Road, Weston on the Green, Oxford, OX25 3QP, UK Tel: +44 (0)1869 351155 Fax: +44(0)1869 351205 Company Registration Number: 2003365. England and Wales _______________________________________________ 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/below%40mac.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.… As a primer, I am certain you will find Amit Singh's book very interesting: I have a good knowledge of C/C++ and am familiar with the ideas behind microkernel operating systems, particularly MACH. 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. This email sent to below(a)mac.com This email sent to site_archiver(a)lists.apple.com

1 0

Kernel Newbie
by Gavin Brewer 12 Nov '07

12 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Thunderbird 2.0.0.6 (X11/20071022) Folks, I am aware that this is a FAQ, but I am submitting anyway. Could someone offer me advice/pointers/links on how to proceed? Thank you for your time, Gavin. Gavin Brewer Junior Software Engineer Axicon Auto ID Ltd gb(a)axicon.com -- Axicon Auto ID Ltd. Church Road, Weston on the Green, Oxford, OX25 3QP, UK Tel: +44 (0)1869 351155 Fax: +44(0)1869 351205 Company Registration Number: 2003365. England and Wales _______________________________________________ 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 have a good knowledge of C/C++ and am familiar with the ideas behind microkernel operating systems, particularly MACH. 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. This email sent to site_archiver(a)lists.apple.com

1 0

Re: Live Kernel Debugging in Leopard
by Alexander von Below 11 Nov '07

11 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Alex Am 11.11.2007 um 16:15 schrieb JanakiRam: Hi Alexander, Thanks for the initial response. _______________________________________________ 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.… When you get a Kernel Panic, the system is essentially dead -- and so is the gdb you are using for live Kernel debugging. The engineers at Apple can do a lot, but magic is probably not one of their skills. You are debugging the live, running kernel, not some virtual machine. To use a movie quote "And when the machine breaks down, we break down" To capture a Kernel Panic, you can either use the logs, or setup remote core dumps. ADC Documentation has all the info. One more question -- Will i be able to get stack trace if a kernel panic happens ? -JanakiRam. This email sent to site_archiver(a)lists.apple.com

1 0

Re: Live Kernel Debugging in Leopard
by JanakiRam 11 Nov '07

11 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:cc:in-reply-to:mime-version:content-type:references; bh=j/OkMVqkoRatuaubSRqXV3PxDTxQu/EefZGcb8kl6y8=; b=J2uZ3QPkk892GSayR/uRfnzpl8inJNJXhBA54yVjU0jcYEXZuvpZJ57sAhDGFjcmkODwgmINcdoxwj2D5axodWH6feQ9XybcHUXzEXVQ8K6jDW6jPQljXySN6fP0vZgLwdWvV6DRPU4F52Logwyq4icTTVkokYFcDtlBzDTs+vw= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=EKo+hYj6om4xIoute+3yWFTxnd6PH0aZ9MMc6hXtRu2SvUftvPnxvwmCHbHA2wqdpiKPyQvCSKrY2CZGJRvWL2pA+E7VF/CGXaetejiqiTUmYEJCTuImh1fqbvMfMQM9Nfyu20LUoSaas+MNuAgIv+l5ACk4IeK3y33b7fuBTy4= _______________________________________________ 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

1 0

Re: Live Kernel Debugging in Leopard
by Alexander von Below 11 Nov '07

11 Nov '07

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hello JanakiRam, You need to set your boot args to kmem=1: sudo nvram boot-args="kmem=1" start gdb: sudo gdb /Volumes/KernelDebugKit/mach_kernel then, in gdb target darwin-kernel attach and you are connected to your live kernel Alex Am 11.11.2007 um 08:28 schrieb JanakiRam: Hi All, Please help me to learn the new technique. Thanks in Advance. -JanakiRam. _______________________________________________ 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/below%40mac.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.… yes, it is true, but what is does is that it allows you to view the Kernels memory, no more no less. No breakpoints, etc. I'm new to leopard. I've been using 2 machine debugging technique in Tiger to resolve the errors in My kext. I heard that in Leopard , there is a sophisticated way to debug the kernel on live. Is this True ? If so , Can any one point me to the links/documents which describe Live Kernel Debugging. This email sent to below(a)mac.com This email sent to site_archiver(a)lists.apple.com

1 0

Live Kernel Debugging in Leopard
by JanakiRam 11 Nov '07

11 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; bh=o40AoN0VZN4F3L+YlYUytzllGf+Va22b9IGH9g+7hLY=; b=C0Zo1seya34PEgZKqEWbyDNmWuidtuNO3psxkV+Z3uERymHLAEnYsBVVDt6CWcOq4O89Z/GQmx3GcHm6ikHN4tSwBUpXyNxxTlgtI7O7YvlED6gsYF7C6heO1MnNlfIMIQSfaCQOk4LaWMv1Ur56RxlNe7+rIbey87eRixsZTmY= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type; b=Ut7vLPAu1L5YWUEOd96l7meuO1qw3lR/iM8grD8NlNASCv9Eki67q58KnKS6ZnkFp7LQIoz3+yS907dvmYYdhzpatsXbXFmboTxXTx+1eEut+VZCOEYIZZ9pkuM+8nKYkwuQfV33RHzy1kuu8jxthgCzflQqZiufqJlGku3e+Qg= _______________________________________________ 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

1 0