diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-28 16:54:55 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-01-28 16:54:55 +0000 |
| commit | 29874a8c6015deff95e90e64fb9321bdc7b32a99 (patch) | |
| tree | e7737171b36cc18f2f82851727630d6135ffba19 /OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm | |
| parent | b5e243b75f22cf87d887bc41ffcddc9b7a5f8d5c (diff) | |
| download | edk2-platforms-29874a8c6015deff95e90e64fb9321bdc7b32a99.tar.xz | |
QemuFwCfgLib: Add QemuFwCfgWriteBytes() function
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
Diffstat (limited to 'OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm')
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm index c60ad2c5d4..47ac158f85 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm +++ b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm @@ -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
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