OvmfPkg: Add QemuFwCfgLib library class and implementation

[mirror_edk2.git] / OvmfPkg / Library / QemuFwCfgLib / Ia32 / IoLibExAsm.S

diff --git a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S
new file mode 100644 (file)
index 0000000..a32b2c6
--- /dev/null
+++ b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S
@@ -0,0 +1,32 @@
+#------------------------------------------------------------------------------\r
+#\r
+# Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
+# This program and the accompanying materials\r
+# are licensed and made available under the terms and conditions of the BSD License\r
+# which accompanies this distribution.  The full text of the license may be found at\r
+# http://opensource.org/licenses/bsd-license.php.\r
+#\r
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+#\r
+#------------------------------------------------------------------------------\r
+\r
+#------------------------------------------------------------------------------\r
+#  VOID\r
+#  EFIAPI\r
+#  IoReadFifo8 (\r
+#    IN UINTN                  Port,\r
+#    IN UINTN                  Size,\r
+#    IN VOID                   *Buffer\r
+#    );\r
+#------------------------------------------------------------------------------\r
+ASM_GLOBAL ASM_PFX(IoReadFifo8)\r
+ASM_PFX(IoReadFifo8):\r
+    movw    4(%esp), %dx\r
+    movl    8(%esp), %ecx\r
+    pushl   %edi\r
+    movl    16(%esp), %edi\r
+rep insb\r
+    popl    %edi\r
+    ret\r
+\r