hal/halx86/up/pic.S

   1 /*
   2  * FILE:            hal/halx86/up/pic.S
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PURPOSE:         HAL PIC Management and Control Code
   5  * PROGRAMMER:      Thomas Faber (thomas.faber@reactos.org)
   6  */
   7
   8 /* INCLUDES ******************************************************************/
   9
  10 #include <asm.inc>
  11
  12 #include <ks386.inc>
  13
  14 /* GLOBALS *******************************************************************/
  15
  16 .data
  17 ASSUME CS:NOTHING, DS:NOTHING, ES:NOTHING, FS:NOTHING, GS:NOTHING
  18
  19 /* FUNCTIONS *****************************************************************/
  20
  21 .code
  22
  23 MACRO(DEFINE_END_INTERRUPT_WRAPPER, WrapperName, HandlerName)
  24 EXTERN @&HandlerName&@8:PROC
  25 PUBLIC _&WrapperName&@8
  26 .PROC _&WrapperName&@8
  27     FPO 0, 2, 0, 0, 0, FRAME_FPO
  28
  29     /* Call the C function with the same arguments we got */
  30     mov ecx, [esp+4]
  31     mov edx, [esp+8]
  32     call @&HandlerName&@8
  33
  34     /* Check if we got a pointer back */
  35     test eax, eax
  36     jnz WrapperName&_CallIntHandler
  37
  38     /* No? Just return */
  39     ret 8
  40
  41 WrapperName&_CallIntHandler:
  42     /* We got a pointer to call. Since it won't return, free up our stack
  43        space. Otherwise we could end up with some nasty deep recursion.
  44        The next function takes the trap frame as its (fastcall) argument. */
  45     mov ecx, [esp+8]
  46     add esp, 12
  47     jmp eax
  48 .ENDP
  49 ENDM
  50
  51
  52 DEFINE_END_INTERRUPT_WRAPPER HalpEndSoftwareInterrupt, HalpEndSoftwareInterrupt2
  53
  54 END