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>
---
ArmPkg/Include/Library/ArmSvcLib.h | 46 ++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 ArmPkg/Include/Library/ArmSvcLib.h
diff --git a/ArmPkg/Include/Library/ArmSvcLib.h b/ArmPkg/Include/Library/ArmSvcLib.h
new file mode 100644
index 0000000000..77a60b3679
--- /dev/null
+++ b/ArmPkg/Include/Library/ArmSvcLib.h
@@ -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
--
2.14.1
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel