qemu/page-target.c
Philippe Mathieu-Daudé 75bbe6a4d2 exec: Expose 'target_page.h' API to user emulation
User-only objects might benefit from the "exec/target_page.h"
API, which allows to build some objects once for all targets.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231211212003.21686-3-philmd@linaro.org>
2024-04-26 15:28:11 +02:00

45 lines
822 B
C

/*
* QEMU page values getters (target independent)
*
* Copyright (c) 2003 Fabrice Bellard
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "qemu/osdep.h"
#include "exec/target_page.h"
#include "exec/cpu-defs.h"
#include "cpu.h"
#include "exec/cpu-all.h"
size_t qemu_target_page_size(void)
{
return TARGET_PAGE_SIZE;
}
int qemu_target_page_mask(void)
{
return TARGET_PAGE_MASK;
}
int qemu_target_page_bits(void)
{
return TARGET_PAGE_BITS;
}
int qemu_target_page_bits_min(void)
{
return TARGET_PAGE_BITS_MIN;
}
/* Convert target pages to MiB (2**20). */
size_t qemu_target_pages_to_MiB(size_t pages)
{
int page_bits = TARGET_PAGE_BITS;
/* So far, the largest (non-huge) page size is 64k, i.e. 16 bits. */
g_assert(page_bits < 20);
return pages >> (20 - page_bits);
}