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| author | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-11 11:12:28 +0000 |
|---|---|---|
| committer | yshang1 <yshang1@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-11 11:12:28 +0000 |
| commit | 4199d92d1c5e2231e596e25a27acaffefa72a064 (patch) | |
| tree | 27ed5536d177197d42bbb3a316d4f7e34dcd63e1 /MdePkg/Library/BasePalCallLibNull/PalCall.c | |
| parent | a021b849f212d124593070ea7d1c423f65d7c119 (diff) | |
| download | edk2-platforms-4199d92d1c5e2231e596e25a27acaffefa72a064.tar.xz | |
Add BasePalCallLibNull instance in MdePkg. It is useful when building IPF components in open source packages.
Use meaningful arguments defined in PalLib.h when invoking PalCall().
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4094 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BasePalCallLibNull/PalCall.c')
| -rw-r--r-- | MdePkg/Library/BasePalCallLibNull/PalCall.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/MdePkg/Library/BasePalCallLibNull/PalCall.c b/MdePkg/Library/BasePalCallLibNull/PalCall.c new file mode 100644 index 0000000000..0c1d137d67 --- /dev/null +++ b/MdePkg/Library/BasePalCallLibNull/PalCall.c @@ -0,0 +1,58 @@ +/** @file
+
+ Template and Sample instance of PalCallLib.
+
+ Copyright (c) 2006 - 2007, Intel Corporation
+ All rights reserved. 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.
+
+**/
+#include <Base.h>
+#include <Library/PalCallLib.h>
+#include <Library/DebugLib.h>
+
+/**
+ Makes a PAL procedure call.
+
+ This is a wrapper function to make a PAL procedure call. Based on the Index value,
+ this API will make static or stacked PAL call. Architected procedures may be designated
+ as required or optional. If a PAL procedure is specified as optional, a unique return
+ code of 0xFFFFFFFFFFFFFFFF is returned in the Status field of the PAL_CALL_RETURN structure.
+ This indicates that the procedure is not present in this PAL implementation. It is the
+ caller¡¯s responsibility to check for this return code after calling any optional PAL
+ procedure. No parameter checking is performed on the 4 input parameters, but there are
+ some common rules that the caller should follow when making a PAL call. Any address
+ passed to PAL as buffers for return parameters must be 8-byte aligned. Unaligned addresses
+ may cause undefined results. For those parameters defined as reserved or some fields
+ defined as reserved must be zero filled or the invalid argument return value may be
+ returned or undefined result may occur during the execution of the procedure.
+ This function is only available on IPF.
+
+ @param Index - The PAL procedure Index number.
+ @param Arg2 - The 2nd parameter for PAL procedure calls.
+ @param Arg3 - The 3rd parameter for PAL procedure calls.
+ @param Arg4 - The 4th parameter for PAL procedure calls.
+
+ @return structure returned from the PAL Call procedure, including the status and return value.
+
+**/
+PAL_CALL_RETURN
+EFIAPI
+PalCall (
+ IN UINT64 Index,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
+ )
+{
+ PAL_CALL_RETURN Ret;
+
+ Ret.Status = (UINT64) -1;
+ ASSERT (!RETURN_ERROR (RETURN_UNSUPPORTED));
+ return Ret;
+}
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