working userland with some invoke syscalls

1 files changed, 46 insertions, 0 deletions

diff --git a/arch/x86_64/idt.c b/arch/x86_64/idt.c
new file mode 100644
index 0000000..99e1da1
--- /dev/null
+++ b/arch/x86_64/idt.c
@@ -0,0 +1,46 @@
+#include "arch/x86_64/tables.h"
+#include "arch/x86_64/idt.h"
+
+__attribute__((aligned(4096)))
+interrupt_gate_t s_idtd[256];
+
+int64_t __isr_err;
+int64_t __isr_num;
+
+void
+isr_handle(ivt_state_t* state)
+{
+    kpanic_state(state, "Unhandled interrupt %i", __isr_num);
+}
+
+void
+ivt_setup(void)
+{
+    extern uintptr_t __ivt[256];
+    for(int i = 0; i < 256; i++) {
+        uintptr_t base = __ivt[i];
+        s_idtd[i] = (interrupt_gate_t) {
+            .base_0_15 = (base & 0xFFFF),
+            .segment_selector = 0x8,
+            .ist = 0,
+            .zero_0 = 0,
+            .type = 0xE,
+            .zero_1 = 0,
+            .dpl = 0,
+            .p = 1,
+            .base_16_31 = (base >> 16) & 0xFFFF,
+            .base_32_63 = (base >> 32) & 0xFFFFFFFF,
+            .resv = 0
+        };
+    }
+}
+
+void
+idt_setup(processor_t *processor)
+{
+    processor->idtr.base = (uintptr_t)&s_idtd;
+    processor->idtr.length = sizeof(s_idtd) - 1;
+    
+    extern void idt_load(void* idtr);
+    idt_load(&processor->idtr);
+}