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exec: Extract 'page-vary.h' header

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In the next commit we will extract the generic code out of
page-vary.c, only keeping the target specific code. Both
files will use the same TargetPageBits structure, so make
its declaration in a shared header.

As the common header can not use target specific types,
use a uint64_t to hold the page mask value, and add a
cast back to target_long in the TARGET_PAGE_MASK definitions.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210322112427.4045204-3-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-03-22 12:24:25 +01:00
parent 6670d4d0e3
commit 27eb9d65ff
2 changed files with 33 additions and 7 deletions
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11
include/exec/cpu-all.h
View File

@ -215,11 +215,7 @@ static inline void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val
/* page related stuff */
#ifdef TARGET_PAGE_BITS_VARY
typedef struct {
bool decided;
int bits;
target_long mask;
} TargetPageBits;
# include "exec/page-vary.h"
#if defined(CONFIG_ATTRIBUTE_ALIAS) || !defined(IN_EXEC_VARY)
extern const TargetPageBits target_page;
#else
@ -227,10 +223,11 @@ extern TargetPageBits target_page;
#endif
#ifdef CONFIG_DEBUG_TCG
#define TARGET_PAGE_BITS ({ assert(target_page.decided); target_page.bits; })
#define TARGET_PAGE_MASK ({ assert(target_page.decided); target_page.mask; })
#define TARGET_PAGE_MASK ({ assert(target_page.decided); \
(target_long)target_page.mask; })
#else
#define TARGET_PAGE_BITS target_page.bits
#define TARGET_PAGE_MASK target_page.mask
#define TARGET_PAGE_MASK ((target_long)target_page.mask)
#endif
#define TARGET_PAGE_SIZE (-(int)TARGET_PAGE_MASK)
#else

29
include/exec/page-vary.h Normal file
View File

@ -0,0 +1,29 @@
/*
* Definitions for cpus with variable page sizes.
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EXEC_PAGE_VARY_H
#define EXEC_PAGE_VARY_H
typedef struct {
bool decided;
int bits;
uint64_t mask;
} TargetPageBits;
#endif /* EXEC_PAGE_VARY_H */