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James Molloy's Tutorial Known Bugs: Difference between revisions
The Intel manual lists ISR 17 and 21 as pushing error codes. ISR 30 is, as time of writing, still reserved.
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(Mention that the check for page alignment in kmalloc is wrong.) |
(The Intel manual lists ISR 17 and 21 as pushing error codes. ISR 30 is, as time of writing, still reserved.) |
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There are two ways around this. The most practical method is to pass the structure as a pointer instead, which allows you to explicitly edit the register state when needed - very useful for system calls, without having the compiler randomly doing it for you. The compiler can still edit the pointer on the stack when it's not specifically needed. The second option is to make another copy the structure and pass that.
== Problem: ISR 17 and
The interrupt handling code in the downloadable code have a bug where it handles ISR 17 and
== Problem: struct registers::esp is useless ==
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