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util: move qemu_real_host_page_size/mask to osdep.h

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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>
This commit is contained in:
Emilio G. Cota 2017-07-15 03:24:27 -04:00 • committed by Richard Henderson
parent 619205fd1f
commit 3637cf58f9
5 changed files with 25 additions and 6 deletions
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4
exec.c
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@ -120,8 +120,6 @@ int use_icount;
uintptr_t qemu_host_page_size;
intptr_t qemu_host_page_mask;
uintptr_t qemu_real_host_page_size;
intptr_t qemu_real_host_page_mask;
bool set_preferred_target_page_bits(int bits)
{
@ -3606,8 +3604,6 @@ void page_size_init(void)
{
/* NOTE: we can always suppose that qemu_host_page_size >=
TARGET_PAGE_SIZE */
qemu_real_host_page_size = getpagesize();
qemu_real_host_page_mask = -(intptr_t)qemu_real_host_page_size;
if (qemu_host_page_size == 0) {
qemu_host_page_size = qemu_real_host_page_size;
}