42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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/*
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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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#endif
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