kernel/arch/x86/irq/sample_handler.c

   1 #include <tty.h>
   2 #include <irq/i8259a.h>
   3 #include <io.h>
   4 #include <stdint.h>
   5 #include <mm/paging.h>
   6 #include <panic.h>
   7
   8 typedef uint32_t uword_t;
   9
  10 struct interrupt_frame {
  11         uword_t ip;
  12         uword_t cs;
  13         uword_t flags;
  14 };
  15
  16 struct fault_frame {
  17         struct pf_errcode error_code;
  18         uintptr_t eip;
  19         uint16_t cs;
  20         uint32_t eflags;
  21 };
  22
  23 struct abort_frame;
  24
  25 __attribute__((interrupt))
  26 void keyb_handler(struct interrupt_frame *frame)
  27 {
  28         pic_send_eoi(1);
  29         kprint("Got a keyboard interrupt!\n", 0);
  30         inb(0x60);
  31         int a = *(int *) (0xa0000000);
  32 }
  33
  34 __attribute__((interrupt))
  35 void pf_handler(struct fault_frame *frame)
  36 {
  37         int address;
  38         struct pf_errcode errcode = frame->error_code;
  39         asm ("mov %%cr2, %0": "=a" (address));
  40         kprint("A page fault occurred!\n", VGA_COLOR_BRIGHT_RED);
  41         kprint("Faulting address: ", 0);
  42         kprintd(address);
  43         kprint("\n", 0);
  44         if (!errcode.p) {
  45                 kprint("Address points to non-mapped page\n", 0);
  46         }
  47         if (errcode.wr) {
  48                 kprint("Fault occurred while writing to memory\n", 0);
  49         } else {
  50                 kprint("Fault occurred while reading from memory\n", 0);
  51         }
  52         if (errcode.id) {
  53                 kprint("Fault occurred while fetching instruction\n", 0);
  54         }
  55         PANIC("page fault");
  56 }
  57
  58 __attribute__((interrupt))
  59 void double_fault(struct abort_frame *frame)
  60 {
  61         PANIC("double fault");
  62 }
  63