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487a31e0ac
Move mmap_lock(), mmap_unlock() declarations and the WITH_MMAP_LOCK_GUARD() definition to 'exec/page-protection.h'. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20241212185341.2857-5-philmd@linaro.org>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* QEMU page protection definitions.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* SPDX-License-Identifier: LGPL-2.1+
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*/
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#ifndef EXEC_PAGE_PROT_COMMON_H
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#define EXEC_PAGE_PROT_COMMON_H
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/* same as PROT_xxx */
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#define PAGE_READ 0x0001
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#define PAGE_WRITE 0x0002
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#define PAGE_EXEC 0x0004
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#define PAGE_RWX (PAGE_READ | PAGE_WRITE | PAGE_EXEC)
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#define PAGE_VALID 0x0008
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/*
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* Original state of the write flag (used when tracking self-modifying code)
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*/
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#define PAGE_WRITE_ORG 0x0010
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/*
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* Invalidate the TLB entry immediately, helpful for s390x
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* Low-Address-Protection. Used with PAGE_WRITE in tlb_set_page_with_attrs()
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*/
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#define PAGE_WRITE_INV 0x0020
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/* For use with page_set_flags: page is being replaced; target_data cleared. */
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#define PAGE_RESET 0x0040
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/* For linux-user, indicates that the page is MAP_ANON. */
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#define PAGE_ANON 0x0080
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/* Target-specific bits that will be used via page_get_flags(). */
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#define PAGE_TARGET_1 0x0200
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#define PAGE_TARGET_2 0x0400
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/*
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* For linux-user, indicates that the page is mapped with the same semantics
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* in both guest and host.
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*/
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#define PAGE_PASSTHROUGH 0x0800
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#ifdef CONFIG_USER_ONLY
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#include "qemu/clang-tsa.h"
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void TSA_NO_TSA mmap_lock(void);
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void TSA_NO_TSA mmap_unlock(void);
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bool have_mmap_lock(void);
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static inline void mmap_unlock_guard(void *unused)
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{
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mmap_unlock();
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}
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#define WITH_MMAP_LOCK_GUARD() \
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for (int _mmap_lock_iter __attribute__((cleanup(mmap_unlock_guard))) \
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= (mmap_lock(), 0); _mmap_lock_iter == 0; _mmap_lock_iter = 1)
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#else
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static inline void mmap_lock(void) {}
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static inline void mmap_unlock(void) {}
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#define WITH_MMAP_LOCK_GUARD()
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#endif /* !CONFIG_USER_ONLY */
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#endif
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