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72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "SoftMMU.h"
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#include <sys/mman.h>
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namespace UserspaceEmulator {
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class MallocRegionMetadata;
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class MallocTracer;
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class MmapRegion final : public Region {
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public:
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static NonnullOwnPtr<MmapRegion> create_anonymous(u32 base, u32 size, u32 prot, String name);
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static NonnullOwnPtr<MmapRegion> create_file_backed(u32 base, u32 size, u32 prot, int flags, int fd, off_t offset, String name);
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virtual ~MmapRegion() override;
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virtual ValueWithShadow<u8> read8(u32 offset) override;
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virtual ValueWithShadow<u16> read16(u32 offset) override;
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virtual ValueWithShadow<u32> read32(u32 offset) override;
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virtual ValueWithShadow<u64> read64(u32 offset) override;
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virtual ValueWithShadow<u128> read128(u32 offset) override;
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virtual ValueWithShadow<u256> read256(u32 offset) override;
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virtual void write8(u32 offset, ValueWithShadow<u8>) override;
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virtual void write16(u32 offset, ValueWithShadow<u16>) override;
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virtual void write32(u32 offset, ValueWithShadow<u32>) override;
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virtual void write64(u32 offset, ValueWithShadow<u64>) override;
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virtual void write128(u32 offset, ValueWithShadow<u128>) override;
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virtual void write256(u32 offset, ValueWithShadow<u256>) override;
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virtual u8* data() override { return m_data; }
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virtual u8* shadow_data() override { return m_shadow_data; }
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bool is_malloc_block() const { return m_malloc; }
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void set_malloc(bool b) { m_malloc = b; }
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NonnullOwnPtr<MmapRegion> split_at(VirtualAddress);
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int prot() const
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{
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return (is_readable() ? PROT_READ : 0) | (is_writable() ? PROT_WRITE : 0) | (is_executable() ? PROT_EXEC : 0);
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}
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void set_prot(int prot);
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MallocRegionMetadata* malloc_metadata() { return m_malloc_metadata; }
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void set_malloc_metadata(Badge<MallocTracer>, NonnullOwnPtr<MallocRegionMetadata> metadata) { m_malloc_metadata = move(metadata); }
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const String& name() const { return m_name; }
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void set_name(String name) { m_name = move(name); }
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private:
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MmapRegion(u32 base, u32 size, int prot, u8* data, u8* shadow_data);
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u8* m_data { nullptr };
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u8* m_shadow_data { nullptr };
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bool m_file_backed { false };
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bool m_malloc { false };
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OwnPtr<MallocRegionMetadata> m_malloc_metadata;
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String m_name;
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};
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template<>
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inline bool Region::fast_is<MmapRegion>() const { return m_mmap; }
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}
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