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Moved interrupt code to separate file.

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Added new source file to Makefile.am
This commit is contained in:
ngiddings
2021-04-14 02:46:04 -05:00
parent 4a8ca81a10
commit 29544b0eb8
4 changed files with 60 additions and 39 deletions
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29
src/x86/interrupts.c Normal file
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@@ -0,0 +1,29 @@
#include "interrupts.h"
struct idt_info_t
{
uint16_t size;
void *location;
};
void lidt(struct interrupt_descriptor_t *idt)
{
struct idt_info_t idt_info;
idt_info.size = sizeof(idt) - 1;
idt_info.location = (void *)&idt;
asm("lidt (%0)"
:
: "r"(&idt_info));
}
void create_interrupt_descriptor(struct interrupt_descriptor_t *descriptor, void *isr, enum isr_type_t type, uint32_t privilage)
{
descriptor->offset_1 = (uint32_t) isr & 0xFFFF;
descriptor->offset_2 = (uint32_t) isr >> 16;
descriptor->selector = 8;
descriptor->zero = 0;
descriptor->type = type;
descriptor->storage = 0;
descriptor->dpl = privilage;
descriptor->present = 1;
}