OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
   4 # This program and the accompanying materials
   5 # are licensed and made available under the terms and conditions of the BSD License
   6 # which accompanies this distribution.  The full text of the license may be found at
   7 # http://opensource.org/licenses/bsd-license.php.
   8 #
   9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 #------------------------------------------------------------------------------
  13
  14 #------------------------------------------------------------------------------
  15 #  VOID
  16 #  EFIAPI
  17 #  IoReadFifo8 (
  18 #    IN UINTN                  Port,
  19 #    IN UINTN                  Size,
  20 #    IN VOID                   *Buffer
  21 #    );
  22 #------------------------------------------------------------------------------
  23 ASM_GLOBAL ASM_PFX(IoReadFifo8)
  24 ASM_PFX(IoReadFifo8):
  25     movw    4(%esp), %dx
  26     movl    8(%esp), %ecx
  27     pushl   %edi
  28     movl    16(%esp), %edi
  29 rep insb
  30     popl    %edi
  31     ret
  32
  33
  34 #------------------------------------------------------------------------------
  35 #  VOID
  36 #  EFIAPI
  37 #  IoWriteFifo8 (
  38 #    IN UINTN                  Port,
  39 #    IN UINTN                  Size,
  40 #    IN VOID                   *Buffer
  41 #    );
  42 #------------------------------------------------------------------------------
  43 ASM_GLOBAL ASM_PFX(IoWriteFifo8)
  44 ASM_PFX(IoWriteFifo8):
  45     movw    4(%esp), %dx
  46     movl    8(%esp), %ecx
  47     pushl   %esi
  48     movl    16(%esp), %esi
  49 rep outsb
  50     popl    %esi
  51     ret
  52