cf854041ce
- the PIC master and slave irq handlers don't pass the irq hook pointer but just the irq number. It gives a little bit more information to the C handler as the irq number is not lost - the irq code path is more achitecture independent. i386 hw interrupts are called irq and whereever the code is arch independent enough hw_intr_ functions are called to mask/unmask interrupts - the legacy PIC is not the only possible interrupt controller in the x86 world, therefore the intr_(un)mask functions were renamed to signal their functionality explicitly. APIC will add their own. - masking and unmasking PIC interrupt lines is removed from assembler and all the functionality is rewriten in C and moved to i8259.c - interrupt handlers have to unmask the interrupt line if all irq handlers are done. Assembler does not do it anymore