#include <tty.h>
#include <irq/i8259a.h>
+#include <io.h>
#include <stdint.h>
+#include <mm/paging.h>
typedef uint32_t uword_t;
uword_t flags;
};
+struct fault_frame {
+ uint32_t error_code;
+ uintptr_t eip;
+ uint16_t cs;
+ uint32_t eflags;
+};
+
struct abort_frame;
__attribute__((interrupt))
{
pic_send_eoi(1);
kprint("Got a keyboard interrupt!\n", 0);
+ inb(0x60);
}
+__attribute__((interrupt))
+void pf_handler(struct fault_frame *frame)
+{
+ struct pf_errcode *errcode = &(frame->error_code);
+ kprint("A page fault occurred!\n", VGA_COLOR_DARK_RED);
+ if (errcode->p) {
+ kprint("Attempted to access non-present page\n", 0);
+ }
+ if (errcode->wr) {
+ kprint("Kernel attempted to write to page\n", 0);
+ } else kprint("Kernel attempted to read from page\n", 0);
+ if (errcode->id) {
+ kprint("Fault occurred while fetching instruction\n", 0);
+ }
+ int cr2;
+ asm ("mov %%cr2, %0": "=a" (cr2));
+ kprint("CR2: ", 0);
+ kprintd(cr2);
+halt:
+ asm ("cli; hlt");
+ goto halt;
+}
__attribute__((interrupt))
void double_fault(struct abort_frame *frame)
{
- *(volatile char *) (0xb8000) = ":";
- *(volatile char *) (0xb8002) = "(";
+ *(volatile uint32_t *) (0xb8000) = 0xcf28cf3a;
+halt:
asm volatile ("cli; hlt");
+ goto halt;
}