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util: move qemu_real_host_page_size/mask to osdep.h
These only depend on the host and therefore belong in the common osdep, not in a target-dependent object. While at it, query the host during an init constructor, which guarantees the page size will be well-defined throughout the execution of the program. Suggested-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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/* | ||
* pagesize.c - query the host about its page size | ||
* | ||
* Copyright (C) 2017, Emilio G. Cota <cota@braap.org> | ||
* License: GNU GPL, version 2 or later. | ||
* See the COPYING file in the top-level directory. | ||
*/ | ||
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#include "qemu/osdep.h" | ||
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uintptr_t qemu_real_host_page_size; | ||
intptr_t qemu_real_host_page_mask; | ||
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static void __attribute__((constructor)) init_real_host_page_size(void) | ||
{ | ||
qemu_real_host_page_size = getpagesize(); | ||
qemu_real_host_page_mask = -(intptr_t)qemu_real_host_page_size; | ||
} |