lunaix-os/kernel/asm/x86/intr_routines.c

   1 #include <arch/x86/interrupts.h>
   2 #include <lunaix/lxconsole.h>
   3 #include <lunaix/process.h>
   4 #include <lunaix/spike.h>
   5 #include <lunaix/syslog.h>
   6 #include <lunaix/tty/tty.h>
   7
   8 #include <klibc/stdio.h>
   9
  10 #include <hal/apic.h>
  11
  12 LOG_MODULE("INTR")
  13
  14 extern void
  15 intr_routine_page_fault(const isr_param* param);
  16
  17 extern uint32_t debug_resv;
  18
  19 void
  20 __print_panic_msg(const char* msg, const isr_param* param)
  21 {
  22     kprint_panic("  INT %u: (%x) [%p: %p] %s",
  23                  param->vector,
  24                  param->err_code,
  25                  param->cs,
  26                  param->eip,
  27                  msg);
  28 }
  29
  30 void
  31 intr_routine_divide_zero(const isr_param* param)
  32 {
  33     __print_panic_msg("Divide by zero!", param);
  34     spin();
  35 }
  36
  37 void
  38 intr_routine_general_protection(const isr_param* param)
  39 {
  40     kprintf(KERROR "Pid: %d\n", __current->pid);
  41     kprintf(KERROR "Addr: %p\n", (&debug_resv)[0]);
  42     kprintf(KERROR "Expected: %p\n", (&debug_resv)[1]);
  43     console_flush(0);
  44     __print_panic_msg("General Protection", param);
  45     spin();
  46 }
  47
  48 void
  49 intr_routine_sys_panic(const isr_param* param)
  50 {
  51     __print_panic_msg((char*)(param->registers.edi), param);
  52     spin();
  53 }
  54
  55 void
  56 intr_routine_fallback(const isr_param* param)
  57 {
  58     __print_panic_msg("Unknown Interrupt", param);
  59     spin();
  60 }
  61
  62 /**
  63  * @brief ISR for Spurious interrupt
  64  *
  65  * @param isr_param passed by CPU
  66  */
  67 void
  68 intr_routine_apic_spi(const isr_param* param)
  69 {
  70     // FUTURE: do nothing for now
  71 }
  72
  73 void
  74 intr_routine_apic_error(const isr_param* param)
  75 {
  76     uint32_t error_reg = apic_read_reg(APIC_ESR);
  77     char buf[32];
  78     sprintf(buf, "APIC error, ESR=0x%x", error_reg);
  79     __print_panic_msg(buf, param);
  80     spin();
  81 }
  82
  83 void
  84 intr_routine_init()
  85 {
  86     intr_subscribe(FAULT_DIVISION_ERROR, intr_routine_divide_zero);
  87     intr_subscribe(FAULT_GENERAL_PROTECTION, intr_routine_general_protection);
  88     intr_subscribe(FAULT_PAGE_FAULT, intr_routine_page_fault);
  89     intr_subscribe(FAULT_STACK_SEG_FAULT, intr_routine_page_fault);
  90     intr_subscribe(LUNAIX_SYS_PANIC, intr_routine_sys_panic);
  91     intr_subscribe(APIC_SPIV_IV, intr_routine_apic_spi);
  92     intr_subscribe(APIC_ERROR_IV, intr_routine_apic_error);
  93
  94     intr_set_fallback_handler(intr_routine_fallback);
  95 }