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Carlos
2015-03-20 11:39:30 +01:00
parent 9adde4d4bd
commit 6e5a09981a
10 changed files with 239 additions and 727 deletions
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17
20-interrupts-timer/cpu/idt.c
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#include "idt.h"
#include "../kernel/util.h"
void set_idt_gate(int n, u32 handler) {
idt[n].low_offset = low_16(handler);
idt[n].sel = KERNEL_CS;
idt[n].always0 = 0;
idt[n].flags = 0x8E;
idt[n].high_offset = high_16(handler);
}
void set_idt() {
idt_reg.base = (u32) &idt;
idt_reg.limit = IDT_ENTRIES * sizeof(idt_gate_t) - 1;
/* Don't make the mistake of loading &idt -- always load &idt_reg */
__asm__ __volatile__("lidtl (%0)" : : "r" (&idt_reg));
}

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20-interrupts-timer/cpu/idt.c Symbolic link
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../../19-interrupts-irqs/cpu/idt.c