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DynamicTablesPkg: Add AsciiFromHex helper function 

AsciiFromHex is a function converts a hex number to an
ASCII character. This function is used across multiple
generators, so add it to the TableHelperLib.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
This commit is contained in:
Sami Mujawar 2020-08-05 16:36:56 +01:00 committed by mergify[bot]
parent 095db69d4c
commit f2bd39fb60
2 changed files with 42 additions and 3 deletions
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15
DynamicTablesPkg/Include/Library/TableHelperLib.h
View File

@ -1,6 +1,6 @@
/** @file
Copyright (c) 2017 - 2019, ARM Limited. All rights reserved.
Copyright (c) 2017 - 2020, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@ -107,4 +107,17 @@ FindDuplicateValue (
IN PFN_IS_EQUAL EqualTestFunction
);
/** Convert a hex number to its ASCII code.
@param [in] x Hex number to convert.
Must be 0 <= x < 16.
@return The ASCII code corresponding to x.
**/
UINT8
EFIAPI
AsciiFromHex (
IN UINT8 x
);
#endif // TABLE_HELPER_LIB_H_

30
DynamicTablesPkg/Library/Common/TableHelperLib/TableHelper.c
View File

@ -1,8 +1,9 @@
/** @file
Table Helper
Copyright (c) 2017 - 2019, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
Copyright (c) 2017 - 2020, Arm Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Protocol/AcpiTable.h>
@ -244,3 +245,28 @@ FindDuplicateValue (
}
return FALSE;
}
/** Convert a hex number to its ASCII code.
@param [in] x Hex number to convert.
Must be 0 <= x < 16.
@return The ASCII code corresponding to x.
**/
UINT8
EFIAPI
AsciiFromHex (
IN UINT8 x
)
{
if (x < 10) {
return (UINT8)(x + '0');
}
if (x < 16) {
return (UINT8)(x - 10 + 'A');
}
ASSERT (FALSE);
return (UINT8)0;
}