kernel/fiasco/src/kern/ia32/dirq-ia32-ux.cpp

   1 INTERFACE[ia32,amd64,ux]:
   2 #include "std_macros.h"
   3 #include "types.h"
   4
   5 IMPLEMENTATION[ia32,amd64,ux]:
   6
   7 #include <cassert>
   8
   9 #include "cpu_lock.h"
  10 #include "globalconfig.h"
  11 #include "globals.h"
  12 #include "irq.h"
  13 #include "logdefs.h"
  14 #include "std_macros.h"
  15 #include "thread.h"
  16 #include "timer.h"
  17
  18 // screen spinner for debugging purposes
  19 static inline void irq_spinners(int irqnum)
  20 {
  21 #ifdef CONFIG_IRQ_SPINNER
  22   Unsigned16 *p = (Unsigned16 *)Mem_layout::Adap_vram_cga_beg;
  23   p += (20 + current_cpu()) * 80 + irqnum;
  24   if (p < (Unsigned16 *)Mem_layout::Adap_vram_cga_end)
  25     (*p)++;
  26 #else
  27   (void)irqnum;
  28 #endif
  29 }
  30
  31 /** Hardware interrupt entry point.  Calls corresponding Dirq instance's
  32     Dirq::hit() method.
  33     @param irqobj hardware-interrupt object
  34  */
  35 extern "C" FIASCO_FASTCALL
  36 void
  37 irq_interrupt(Mword _irqobj, Mword ip)
  38 {
  39   Mword irqobj = (Smword)((Signed32)_irqobj);
  40   Thread::assert_irq_entry();
  41
  42   CNT_IRQ;
  43   (void)ip;
  44
  45   // we're entered with disabled irqs
  46   Irq_base *i = (Irq_base*)irqobj;
  47   i->log();
  48   irq_spinners(i->pin());
  49   i->hit(0);
  50 }
  51