DuetPkg/DxeIpl/Ia32/CpuIoAccessGnu.c

   1 UINT8
   2 EFIAPI
   3 CpuIoRead8 (
   4   IN  UINT16  Port
   5   )
   6 {
   7   UINT8     Data;
   8   asm ( "inb %1, %0"
   9       : "=a"(Data)
  10       : "d"(Port)
  11       );
  12   return Data;
  13 }
  14
  15 VOID
  16 EFIAPI
  17 CpuIoWrite8 (
  18   IN  UINT16  Port,
  19   IN  UINT32  Data
  20   )
  21 {
  22   asm ( "outb %1, %0"
  23       : /* No outputs */
  24       : "d"(Port)
  25       , "a"((UINT8)Data)
  26       );
  27 }