January 2004
Intermediate to advanced
432 pages
11h 1m
English
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Real-Mode Initialization
The entry point for the kernel is an assembly language routine called rdb_bootstrap(). RDB refers to the remote debugger used internally by Hewlett-Packard. This is the first point in the kernel at which the debugger can start managing the kernel. rdb_bootstrap() turns off interrupts and initializes the interrupt vector table so that we'll be ready to handle any interrupts that come in. It also creates the first procinfo structure, mpproc_info[0], and fills it with information about the monarch. It sets CR24 to point to this procinfo structure. If the kernel is compiled for 64-bit operation and the hardware is 64-bit-capable, rdb_bootstrap() turns on the W-bit in the Processor Status Word to enable wide mode.
rdb_bootstrap() ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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