1 files changed, 122 insertions, 0 deletions
diff --git a/Core/PcAtChipsetPkg/PciHostBridgeDxe/X64/IoFifo.S b/Core/PcAtChipsetPkg/PciHostBridgeDxe/X64/IoFifo.S
new file mode 100644
index 0000000000..decb382028
--- /dev/null
+++ b/Core/PcAtChipsetPkg/PciHostBridgeDxe/X64/IoFifo.S
@@ -0,0 +1,122 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available
+# under the terms and conditions of the BSD License which accompanies this
+# distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php.
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoReadFifo8 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoReadFifo8)
+ASM_PFX(IoReadFifo8):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rdi           # rdi: buffer address; r8: save register
+rep insb
+    mov     %r8, %rdi           # restore rdi
+    ret
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoReadFifo16 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoReadFifo16)
+ASM_PFX(IoReadFifo16):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rdi           # rdi: buffer address; r8: save register
+rep insw
+    mov     %r8, %rdi           # restore rdi
+    ret
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoReadFifo32 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoReadFifo32)
+ASM_PFX(IoReadFifo32):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rdi           # rdi: buffer address; r8: save register
+rep insl
+    mov     %r8, %rdi           # restore rdi
+    ret
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoWriteFifo8 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoWriteFifo8)
+ASM_PFX(IoWriteFifo8):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rsi           # rsi: buffer address; r8: save register
+rep outsb
+    mov     %r8, %rsi           # restore rsi
+    ret
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoWriteFifo16 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoWriteFifo16)
+ASM_PFX(IoWriteFifo16):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rsi           # rsi: buffer address; r8: save register
+rep outsw
+    mov     %r8, %rsi           # restore rsi
+    ret
+
+#------------------------------------------------------------------------------
+#  VOID
+#  EFIAPI
+#  IoWriteFifo32 (
+#    IN UINTN                  Port,              // rcx
+#    IN UINTN                  Count,             // rdx
+#    IN VOID                   *Buffer            // r8
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoWriteFifo32)
+ASM_PFX(IoWriteFifo32):
+    cld
+    xchg    %rcx, %rdx
+    xchg    %r8, %rsi           # rsi: buffer address; r8: save register
+rep outsl
+    mov     %r8, %rsi           # restore rsi
+    ret
+