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https://github.com/CloverHackyColor/CloverBootloader.git
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51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
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/** @file
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This header provides internal BaseOverflowLib definitions.
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Copyright (c) 2020, vit9696. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-3-Clause
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**/
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#ifndef __OVERFLOW_INTERNALS__
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#define __OVERFLOW_INTERNALS__
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#if defined (__has_builtin)
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#if __has_builtin (__builtin_add_overflow) && __has_builtin (__builtin_sub_overflow) && __has_builtin (__builtin_mul_overflow)
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#define BASE_HAS_TYPE_GENERIC_BUILTINS 1
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#endif
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#endif
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#if defined (__GNUC__) || defined (__clang__)
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#if defined (MDE_CPU_AARCH64) || defined (MDE_CPU_X64)
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STATIC_ASSERT (sizeof (INTN) == 8, "INTN is expected to be 8 bytes");
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STATIC_ASSERT (sizeof (UINTN) == 8, "UINTN is expected to be 8 bytes");
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#define BASE_HAS_TYPE_SPECIFIC_BUILTINS_64 1
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#elif defined (MDE_CPU_ARM) || defined (MDE_CPU_IA32)
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STATIC_ASSERT (sizeof (INTN) == 4, "INTN is expected to be 4 bytes");
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STATIC_ASSERT (sizeof (UINTN) == 4, "UINTN is expected to be 4 bytes");
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#define BASE_HAS_TYPE_SPECIFIC_BUILTINS_32 1
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#endif
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STATIC_ASSERT (sizeof (int) == 4, "int is expected to be 4 bytes");
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STATIC_ASSERT (sizeof (unsigned) == 4, "unsigned is expected to be 4 bytes");
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STATIC_ASSERT (sizeof (long long) == 8, "long long is expected to be 8 bytes");
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STATIC_ASSERT (sizeof (unsigned long long) == 8, "unsigned long long is expected to be 8 bytes");
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#define BASE_HAS_TYPE_SPECIFIC_BUILTINS 1
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#endif
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//
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// Currently no architectures provide UINTN and INTN different from 32-bit or 64-bit
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// integers. For this reason they are the only variants supported and are enforced here.
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//
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STATIC_ASSERT (
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sizeof (INTN) == sizeof (INT64) || sizeof (INTN) == sizeof (INT32),
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"INTN must be 32 or 64 Bits wide."
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);
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STATIC_ASSERT (
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sizeof (UINTN) == sizeof (UINT64) || sizeof (UINTN) == sizeof (UINT32),
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"UINTN must be 32 or 64 Bits wide."
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);
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#endif // __OVERFLOW_INTERNALS__
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