organised files; switched to recursive make

1 files changed, 34 insertions, 0 deletions

diff --git a/kernel/include/idt.h b/kernel/include/idt.h
new file mode 100644
index 0000000..9ca9c3a
--- /dev/null
+++ b/kernel/include/idt.h
@@ -0,0 +1,34 @@
+#ifndef IDT_H
+#define IDT_H
+
+#include <stdint.h>
+
+#define GDT_CODE_SEG	0x08
+
+#define INTERRUPT_GATE	0x8E
+#define TRAP_GATE	0x8F
+
+struct idt_entry {
+   uint16_t offset_1;        // offset bits 0..15
+   uint16_t selector;        // a code segment selector in GDT or LDT
+   uint8_t  ist;             // bits 0..2 holds Interrupt Stack Table offset, rest of bits zero.
+   uint8_t  type_attributes; // gate type, dpl, and p fields
+   uint16_t offset_2;        // offset bits 16..31
+   uint32_t offset_3;        // offset bits 32..63
+   uint32_t zero;            // reserved
+} __attribute__((packed));
+typedef struct idt_entry idt_entry;
+
+struct idtp {
+	uint16_t size;
+	uint64_t offset;
+} __attribute__((packed));
+typedef struct idtp idtp;
+
+void init_idt(void);
+void load_idt(idtp* pointer);
+void init_idt_table(void);
+void add_to_idt(uint16_t num, uint64_t offset, uint16_t selector, uint8_t type);
+
+
+#endif