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ArmPkg/Include: Add ArmSvcLib header file. 

ArmSvcLib header file to specify the SVC arguments structure and
function prototype to trigger an SVC call.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Supreeth Venkatesh 2017-09-20 20:48:13 +01:00 committed by Ard Biesheuvel
parent aed68ed6be
commit 4d163696f2
2 changed files with 47 additions and 0 deletions
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1
ArmPkg/ArmPkg.dec
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@ -39,6 +39,7 @@
DefaultExceptionHandlerLib|Include/Library/DefaultExceptionHandlerLib.h
ArmDisassemblerLib|Include/Library/ArmDisassemblerLib.h
ArmGicArchLib|Include/Library/ArmGicArchLib.h
ArmSvcLib|Include/Library/ArmSvcLib.h
[Guids.common]
gArmTokenSpaceGuid = { 0xBB11ECFE, 0x820F, 0x4968, { 0xBB, 0xA6, 0xF7, 0x6A, 0xFE, 0x30, 0x25, 0x96 } }

46
ArmPkg/Include/Library/ArmSvcLib.h Normal file
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@ -0,0 +1,46 @@
/** @file
*
* Copyright (c) 2016 - 2017, ARM Limited. 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.
*
**/
#ifndef __ARM_SVC_LIB__
#define __ARM_SVC_LIB__
/**
* The size of the SVC arguments are different between AArch64 and AArch32.
* The native size is used for the arguments.
*/
typedef struct {
UINTN Arg0;
UINTN Arg1;
UINTN Arg2;
UINTN Arg3;
UINTN Arg4;
UINTN Arg5;
UINTN Arg6;
UINTN Arg7;
} ARM_SVC_ARGS;
/**
Trigger an SVC call
SVC calls can take up to 7 arguments and return up to 4 return values.
Therefore, the 4 first fields in the ARM_SVC_ARGS structure are used
for both input and output values.
**/
VOID
ArmCallSvc (
IN OUT ARM_SVC_ARGS *Args
);
#endif