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QemuFwCfgLib: Add QemuFwCfgWriteBytes() function

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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
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jljusten
2013-01-28 16:54:55 +00:00
parent b5e243b75f
commit 29874a8c60
6 changed files with 153 additions and 6 deletions
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22
OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm
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@@ -1,6 +1,6 @@
;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2006 - 2013, 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
@@ -32,5 +32,25 @@ rep insb
IoReadFifo8 ENDP
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; IoWriteFifo8 (
; IN UINTN Port, // rcx
; IN UINTN Size, // rdx
; IN VOID *Buffer // r8
; );
;------------------------------------------------------------------------------
IoWriteFifo8 PROC
xchg rcx, rdx
xchg rsi, r8 ; rdi: buffer address; r8: save rdi
rep outsb
mov rsi, r8 ; restore rdi
ret
IoWriteFifo8 ENDP
END