mirror of
https://github.com/holub/mame
synced 2025-06-01 18:41:47 +03:00
639c9b85fc
A standard memory handler has as a prototype (where uX = u8, u16, u32 or u64): uX device::read(address_space &space, offs_t offset, uX mem_mask); void device::write(address_space &space, offs_t offset, uX data, uX mem_mask); We now allow simplified versions which are: uX device::read(offs_t offset, uX mem_mask); void device::write(offs_t offset, uX data, uX mem_mask); uX device::read(offs_t offset); void device::write(offs_t offset, uX data); uX device::read(); void device::write(uX data); Use them at will. Also consider (DECLARE_)(READ|WRITE)(8|16|32|64)_MEMBER on the way out, use the explicit prototypes. Same for lambdas in the memory map, the parameters are now optional following the same combinations.
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Olivier Galibert
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// handler_entry_read_memory/handler_entry_write_memory
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// Accesses fixed memory (non-banked rom or ram)
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template<int Width, int AddrShift, int Endian> class handler_entry_read_memory : public handler_entry_read_address<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_read_address<Width, AddrShift, Endian>;
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handler_entry_read_memory(address_space *space) : handler_entry_read_address<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_read_memory() = default;
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uX read(offs_t offset, uX mem_mask) override;
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void *get_ptr(offs_t offset) const override;
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inline void set_base(uX *base) { m_base = base; }
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std::string name() const override;
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private:
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uX *m_base;
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};
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template<int Width, int AddrShift, int Endian> class handler_entry_write_memory : public handler_entry_write_address<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_write_address<Width, AddrShift, Endian>;
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handler_entry_write_memory(address_space *space) : handler_entry_write_address<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_write_memory() = default;
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void write(offs_t offset, uX data, uX mem_mask) override;
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void *get_ptr(offs_t offset) const override;
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inline void set_base(uX *base) { m_base = base; }
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std::string name() const override;
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private:
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uX *m_base;
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};
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// handler_entry_read_memory_bank/handler_entry_write_memory_bank
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// Accesses banked memory, associated to a memory_bank
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template<int Width, int AddrShift, int Endian> class handler_entry_read_memory_bank : public handler_entry_read_address<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_read_address<Width, AddrShift, Endian>;
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handler_entry_read_memory_bank(address_space *space, memory_bank &bank) : handler_entry_read_address<Width, AddrShift, Endian>(space, 0), m_bank(bank) {}
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~handler_entry_read_memory_bank() = default;
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uX read(offs_t offset, uX mem_mask) override;
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void *get_ptr(offs_t offset) const override;
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std::string name() const override;
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private:
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memory_bank &m_bank;
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};
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template<int Width, int AddrShift, int Endian> class handler_entry_write_memory_bank : public handler_entry_write_address<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_write_address<Width, AddrShift, Endian>;
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handler_entry_write_memory_bank(address_space *space, memory_bank &bank) : handler_entry_write_address<Width, AddrShift, Endian>(space, 0), m_bank(bank) {}
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~handler_entry_write_memory_bank() = default;
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void write(offs_t offset, uX data, uX mem_mask) override;
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void *get_ptr(offs_t offset) const override;
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std::string name() const override;
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private:
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memory_bank &m_bank;
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};
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