Added interrupts

1 files changed, 41 insertions, 0 deletions

diff --git a/src/inc/interrupts.h b/src/inc/interrupts.h
new file mode 100644
index 0000000..7145e62
--- /dev/null
+++ b/src/inc/interrupts.h
@@ -0,0 +1,41 @@
+// MIT License, Copyright (c) 2020 Marvin Borner
+
+#ifndef IDT_H
+#define IDT_H
+
+#include <def.h>
+
+struct regs {
+	u32 gs, fs, es, ds;
+	u32 edi, esi, ebp, esp, ebx, edx, ecx, eax;
+	u32 int_no, err_code;
+	u32 eip, cs, eflags, useresp, ss;
+};
+
+struct idt_entry {
+	u16 base_low;
+	u16 sel; // Kernel segment
+	u8 always0; // Always 0
+	u8 flags;
+	u16 base_high;
+} __attribute__((packed));
+
+struct idt_ptr {
+	u16 limit;
+	void *base;
+} __attribute__((packed));
+
+struct idt_entry idt[256];
+struct idt_ptr idt_ptr;
+
+void idt_set_gate(u8 num, u32 base, u16 sel, u8 flags);
+
+void irq_install_handler(int irq, void (*handler)(struct regs *r));
+void irq_uninstall_handler(int irq);
+
+void isr_install_handler(int isr, void (*handler)(struct regs *r));
+void isr_uninstall_handler(int isr);
+
+void interrupts_install();
+
+#endif