kernel/arch/x86/irq/stub.s

   1 ; Stubs for interrupt handlers
   2
   3 bits 32
   4 section .text
   5
   6 extern int_handler
   7
   8 int_common:
   9         cld
  10         call int_handler
  11         add esp, 4
  12         popad
  13         iretd
  14
  15 %macro INTERRUPT 1
  16 global int%1
  17 int_%1:
  18         pushad
  19         push dword %1
  20         jmp int_common
  21 %endmacro
  22
  23 %assign i 0
  24 %rep 48
  25 INTERRUPT i
  26 %assign i i+1
  27 %endrep
  28
  29 ; Define flat table containing addresses of handlers
  30 section .rodata
  31 global _int_handler_table
  32 _int_handler_table:
  33         %macro INT 1
  34                 dd int_%1
  35         %endmacro
  36
  37         %assign i 0
  38         %rep 48
  39         INT i
  40         %assign i i+1
  41         %endrep