82 lines
1.9 KiB
C
Executable File
82 lines
1.9 KiB
C
Executable File
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2014 ARM Ltd.
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*/
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#ifndef __ASM_PTDUMP_H
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#define __ASM_PTDUMP_H
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#ifdef CONFIG_PTDUMP_CORE
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#include <linux/mm_types.h>
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#include <linux/seq_file.h>
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#include <linux/ptdump.h>
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struct addr_marker {
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unsigned long start_address;
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char *name;
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};
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struct ptdump_info {
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struct mm_struct *mm;
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const struct addr_marker *markers;
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unsigned long base_addr;
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};
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struct prot_bits {
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u64 mask;
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u64 val;
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const char *set;
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const char *clear;
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};
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struct pg_level {
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const struct prot_bits *bits;
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const char *name;
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size_t num;
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u64 mask;
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};
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/*
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* The page dumper groups page table entries of the same type into a single
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* description. It uses pg_state to track the range information while
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* iterating over the pte entries. When the continuity is broken it then
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* dumps out a description of the range.
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*/
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struct pg_state {
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struct ptdump_state ptdump;
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struct pg_level *pg_level;
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struct seq_file *seq;
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const struct addr_marker *marker;
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unsigned long start_address;
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int level;
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u64 current_prot;
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bool check_wx;
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unsigned long wx_pages;
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unsigned long uxn_pages;
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};
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void ptdump_walk(struct seq_file *s, struct ptdump_info *info);
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void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
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u64 val);
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#ifdef CONFIG_PTDUMP_DEBUGFS
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#define EFI_RUNTIME_MAP_END DEFAULT_MAP_WINDOW_64
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void __init ptdump_debugfs_register(struct ptdump_info *info, const char *name);
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#else
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static inline void ptdump_debugfs_register(struct ptdump_info *info,
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const char *name) { }
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#endif /* CONFIG_PTDUMP_DEBUGFS */
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void ptdump_check_wx(void);
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#else
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static inline void note_page(void *pt_st, unsigned long addr,
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int level, u64 val) { }
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#endif /* CONFIG_PTDUMP_CORE */
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#ifdef CONFIG_DEBUG_WX
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#define debug_checkwx() ptdump_check_wx()
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#else
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#define debug_checkwx() do { } while (0)
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#endif
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#endif /* __ASM_PTDUMP_H */
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