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12eeb04ab4
Rename to migration_legacy_page_bits, to make it clear that we cannot change the value without causing a migration break. Move to page-vary.h and page-vary-target.c. Define via TARGET_PAGE_BITS if not TARGET_PAGE_BITS_VARY. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Target page sizes and friends for non target files
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*
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* Copyright (c) 2017 Red Hat Inc
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*
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* Authors:
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* David Alan Gilbert <dgilbert@redhat.com>
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* Juan Quintela <quintela@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef EXEC_TARGET_PAGE_H
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#define EXEC_TARGET_PAGE_H
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/*
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* If compiling per-target, get the real values.
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* For generic code, reuse the mechanism for variable page size.
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*/
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#ifdef COMPILING_PER_TARGET
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#include "cpu-param.h"
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#include "exec/target_long.h"
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#define TARGET_PAGE_TYPE target_long
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#else
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#define TARGET_PAGE_BITS_VARY
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#define TARGET_PAGE_TYPE int
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#endif
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#ifdef TARGET_PAGE_BITS_VARY
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# include "exec/page-vary.h"
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extern const TargetPageBits target_page;
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# ifdef CONFIG_DEBUG_TCG
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# define TARGET_PAGE_BITS ({ assert(target_page.decided); \
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target_page.bits; })
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# define TARGET_PAGE_MASK ({ assert(target_page.decided); \
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(TARGET_PAGE_TYPE)target_page.mask; })
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# else
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# define TARGET_PAGE_BITS target_page.bits
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# define TARGET_PAGE_MASK ((TARGET_PAGE_TYPE)target_page.mask)
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# endif
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# define TARGET_PAGE_SIZE (-(int)TARGET_PAGE_MASK)
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#else
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# define TARGET_PAGE_BITS_MIN TARGET_PAGE_BITS
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# define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS)
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# define TARGET_PAGE_MASK ((TARGET_PAGE_TYPE)-1 << TARGET_PAGE_BITS)
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#endif
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#define TARGET_PAGE_ALIGN(addr) ROUND_UP((addr), TARGET_PAGE_SIZE)
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static inline size_t qemu_target_page_size(void)
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{
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return TARGET_PAGE_SIZE;
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}
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static inline int qemu_target_page_mask(void)
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{
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return TARGET_PAGE_MASK;
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}
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static inline int qemu_target_page_bits(void)
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{
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return TARGET_PAGE_BITS;
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}
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size_t qemu_target_pages_to_MiB(size_t pages);
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#endif
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