Messages in this thread | | | Subject | Re: IRQ vector assignment for system call exception | Date | Thu, 8 Dec 2005 08:26:29 -0500 | From | "linux-os \(Dick Johnson\)" <> |
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On Thu, 8 Dec 2005, Coywolf Qi Hunt wrote:
> 2005/12/8, yen <yen@eos.cs.nthu.edu.tw>: >> Hi: >> I have a quwstion. Why the number 128 is reserver for system call exception in >> interrupt vectors? Why not other numbers? Are there any historical reasons? >> thanks. >> > > 0x80 stands in the middle of [0..0xff]. > -- > Coywolf Qi Hunt > http://sosdg.org/~coywolf/
If he's looking for 'secret codes' in the kernel, he might look at: LINUX_REBOOT_MAGIC2 LINUX_REBOOT_MAGIC2B LINUX_REBOOT_MAGIC2C
... in linux-`uname -r`/include/linux/reboot.h Hint: Cvt dec to hex.
Cheers, Dick Johnson Penguin : Linux version 2.6.13.4 on an i686 machine (5589.55 BogoMips). Warning : 98.36% of all statistics are fiction. .
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