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2f18705be0
- Improve comments about macros - use helper variable to simplify code Signed-off-by: Axel Heider <axelheider@gmx.de>
26 lines
811 B
C
26 lines
811 B
C
/*
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* Copyright 2014, General Dynamics C4 Systems
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#pragma once
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#include <config.h>
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#include <types.h>
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#include <sel4/bootinfo_types.h>
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/* declare object-specific macros to hide the casting */
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#define BI_PTR(r) ((seL4_BootInfo*)(r))
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#define BI_REF(p) ((word_t)(p))
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#define S_REG_EMPTY (seL4_SlotRegion){ .start = 0, .end = 0 }
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/* The boot info frame takes at least one page, it must be big enough to hold
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* the seL4_BootInfo data structure. Due to internal restrictions, the boot info
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* frame size must be of the form 2^n. Furthermore, there might still be code
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* that makes the hard-coded assumption the boot info frame is always one page.
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*/
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#define BI_FRAME_SIZE_BITS PAGE_BITS
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compile_assert(bi_size, sizeof(seL4_BootInfo) <= BIT(BI_FRAME_SIZE_BITS))
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