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77c3917544
In the C99 standard, the order of evaluation associated with
multiple #, multiple ## or a mix of # and ## preprocessor
operator is unspecified. For this case, gcc 7.3.0 manual
does not specify related implementation. So it is unsafe
to use multiple # or ## in a macro.
BTW, there are some macros with one or more "##" which are
not used by hypervisor.
Update relate codes to avoid using multiple # or ## in a macro;
Remove unused macros with one or more "##";
Remove "struct __hack;" at the end of GETCC since it is useless.
Note:
'##' operator usage constraints: A ## preprocessing token shall
not occur at the beginning or at the end of a replacement list
for either form of macro definition.
V1--V2:
Update relate codes to avoid using multiple # or ## in a macro.
V2-->V3:
Remove unused macros with one or more "##";
Remove "struct __hack;" at the end of GETCC since it is useless.
Signed-off-by: Xiangyang Wu <xiangyang.wu@linux.intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
29 lines
776 B
C
29 lines
776 B
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef MACROS_H
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#define MACROS_H
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/** Replaces 'x' by the string "x". */
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#define __CPP_STRING(x) #x
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/** Replaces 'x' by its value. */
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#define CPP_STRING(x) __CPP_STRING(x)
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/* Macro used to check if a value is aligned to the required boundary.
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* Returns TRUE if aligned; FALSE if not aligned
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* NOTE: The required alignment must be a power of 2 (2, 4, 8, 16, 32, etc)
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*/
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#define MEM_ALIGNED_CHECK(value, req_align) \
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(((uint64_t)(value) & ((uint64_t)(req_align) - 1UL)) == 0UL)
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#if !defined(ASSEMBLER) && !defined(LINKER_SCRIPT)
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#define ARRAY_LENGTH(x) (sizeof(x)/sizeof((x)[0]))
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#endif
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#endif /* INCLUDE_MACROS_H defined */
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