29874a8c60
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14109 6f19259b-4bc3-4df7-8a09-765794883524
57 lines
1.8 KiB
NASM
57 lines
1.8 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php.
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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;------------------------------------------------------------------------------
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.code
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoReadFifo8 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; IN VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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IoReadFifo8 PROC
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xchg rcx, rdx
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xchg rdi, r8 ; rdi: buffer address; r8: save rdi
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rep insb
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mov rdi, r8 ; restore rdi
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ret
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IoReadFifo8 ENDP
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoWriteFifo8 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; IN VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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IoWriteFifo8 PROC
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xchg rcx, rdx
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xchg rsi, r8 ; rdi: buffer address; r8: save rdi
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rep outsb
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mov rsi, r8 ; restore rdi
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ret
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IoWriteFifo8 ENDP
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END
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