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37 lines
893 B
C
37 lines
893 B
C
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// SPDX-License-Identifier: GPL-2.0
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#ifndef MEMSIZE_H
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#define MEMSIZE_H
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/*
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* Provides some convenient constants and constant constructors.
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*
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* Copyright (C) 2020 Martin Whitaker.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#define KB 10
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#define MB 20
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#define GB 30
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#define TB 40
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#define VM_PAGE_SHIFT 21
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#define VM_PAGE_SIZE (1 << VM_PAGE_SHIFT)
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define VM_PAGE_C(size, units) \
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(units < VM_PAGE_SHIFT ? (uintptr_t)(size) << (VM_PAGE_SHIFT - units) : (uintptr_t)(size) << (units - VM_PAGE_SHIFT))
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#define PAGE_C(size, units) \
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(units < PAGE_SHIFT ? (uintptr_t)(size) << (PAGE_SHIFT - units) : (uintptr_t)(size) << (units - PAGE_SHIFT))
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#define ADDR_C(size, units) \
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((uintptr_t)(size) << units)
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#define SIZE_C(size, units) \
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((size_t)(size) << units)
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#endif // MEMSIZE_H
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