Interrupts without IDT

[PavelChekov]

How would I make an interrupt handler without the 32-bit specific IDT? The tutorial is aimed at 32-bit x86, and uses the IDT, which I believe is 32-bit.

[Octocontrabass]

You should check if your question is already answered by the wiki before you post.

[nullplan]

I also have absolutely no idea what the OP wants. All interrupts are dispatched through the IDT, and the IDT format is mode dependent. If you want to handle interrupts, you must register your interrupt handler in the IDT, and it has to be in the format valid for your current mode of operation. Handling interrupts without IDT makes no sense. That is like wanting to be washed but not made wet.

[iansjack]

How would you know which interrupt handler to call for each interrupt? One solution would be to construct a table linking the two....

[PavelChekov]

OK, I guess this throws me off:

The Interrupt Descriptor Table (IDT) is specific to the IA-32 architecture.

[bloodline]

OK, I guess this throws me off:

The Interrupt Descriptor Table (IDT) is specific to the IA-32 architecture.

I think this means you won’t find this horribly complex system on other architectures, like 68k, ARM, PPC, MIPS, or RISC-IV