mirror of
https://github.com/holub/mame
synced 2025-10-05 16:50:57 +03:00
a7e393b36b
C++11 range-based for loops can now iterate over simple_list, tagged_list, core_options, device_t::subdevice_list, device_t::interface_list, render_primitive_list and all subclasses of the above, and much code has been refactored to use them. Most core classes that have these lists as members now have methods that return the lists themselves, replacing most of the methods that returned the object at an owned list's head. (A few have been retained due to their use in drivers or OSD.) device_t now manages subdevice and interface lists through subclasses, but has given up the work of adding and removing subdevices to machine_config. memory_manager has its tagged lists exposed, though the old rooted tag lookup methods have been removed (they were privatized already).
251 lines
7.7 KiB
C++
251 lines
7.7 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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/***************************************************************************
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dimemory.c
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Device memory interfaces.
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***************************************************************************/
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#include "emu.h"
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#include "validity.h"
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//**************************************************************************
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// CONSTANTS
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//**************************************************************************
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//const int TRIGGER_SUSPENDTIME = -4000;
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//**************************************************************************
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// ADDRESS SPACE CONFIG
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//**************************************************************************
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//-------------------------------------------------
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// address_space_config - constructors
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//-------------------------------------------------
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address_space_config::address_space_config()
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: m_name("unknown"),
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m_endianness(ENDIANNESS_NATIVE),
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m_databus_width(0),
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m_addrbus_width(0),
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m_addrbus_shift(0),
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m_logaddr_width(0),
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m_page_shift(0),
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m_is_octal(false),
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m_internal_map(nullptr),
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m_default_map(nullptr)
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{
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}
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/*!
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@param name
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@param endian CPU endianness
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@param datawidth CPU parallelism bits
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@param addrwidth address bits
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@param addrshift
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@param internal
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@param defmap
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*/
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address_space_config::address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift, address_map_constructor internal, address_map_constructor defmap)
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: m_name(name),
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m_endianness(endian),
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m_databus_width(datawidth),
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m_addrbus_width(addrwidth),
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m_addrbus_shift(addrshift),
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m_logaddr_width(addrwidth),
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m_page_shift(0),
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m_is_octal(false),
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m_internal_map(internal),
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m_default_map(defmap)
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{
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}
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address_space_config::address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift, UINT8 logwidth, UINT8 pageshift, address_map_constructor internal, address_map_constructor defmap)
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: m_name(name),
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m_endianness(endian),
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m_databus_width(datawidth),
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m_addrbus_width(addrwidth),
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m_addrbus_shift(addrshift),
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m_logaddr_width(logwidth),
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m_page_shift(pageshift),
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m_is_octal(false),
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m_internal_map(internal),
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m_default_map(defmap)
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{
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}
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address_space_config::address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift, address_map_delegate internal, address_map_delegate defmap)
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: m_name(name),
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m_endianness(endian),
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m_databus_width(datawidth),
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m_addrbus_width(addrwidth),
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m_addrbus_shift(addrshift),
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m_logaddr_width(addrwidth),
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m_page_shift(0),
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m_is_octal(false),
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m_internal_map(nullptr),
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m_default_map(nullptr),
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m_internal_map_delegate(std::move(internal)),
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m_default_map_delegate(std::move(defmap))
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{
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}
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address_space_config::address_space_config(const char *name, endianness_t endian, UINT8 datawidth, UINT8 addrwidth, INT8 addrshift, UINT8 logwidth, UINT8 pageshift, address_map_delegate internal, address_map_delegate defmap)
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: m_name(name),
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m_endianness(endian),
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m_databus_width(datawidth),
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m_addrbus_width(addrwidth),
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m_addrbus_shift(addrshift),
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m_logaddr_width(logwidth),
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m_page_shift(pageshift),
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m_is_octal(false),
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m_internal_map(nullptr),
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m_default_map(nullptr),
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m_internal_map_delegate(std::move(internal)),
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m_default_map_delegate(std::move(defmap))
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{
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}
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//**************************************************************************
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// MEMORY DEVICE MANAGEMENT
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//**************************************************************************
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//-------------------------------------------------
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// device_memory_interface - constructor
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//-------------------------------------------------
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device_memory_interface::device_memory_interface(const machine_config &mconfig, device_t &device)
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: device_interface(device, "memory")
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{
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memset(m_address_map, 0, sizeof(m_address_map));
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memset(m_addrspace, 0, sizeof(m_addrspace));
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// configure the fast accessor
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device.interfaces().m_memory = this;
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}
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//-------------------------------------------------
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// ~device_memory_interface - destructor
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//-------------------------------------------------
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device_memory_interface::~device_memory_interface()
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{
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}
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//-------------------------------------------------
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// static_set_addrmap - configuration helper
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// to connect an address map to a device
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//-------------------------------------------------
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void device_memory_interface::static_set_addrmap(device_t &device, address_spacenum spacenum, address_map_constructor map)
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{
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device_memory_interface *memory;
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if (!device.interface(memory))
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throw emu_fatalerror("MCFG_DEVICE_ADDRESS_MAP called on device '%s' with no memory interface", device.tag());
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if (spacenum >= ARRAY_LENGTH(memory->m_address_map))
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throw emu_fatalerror("MCFG_DEVICE_ADDRESS_MAP called on device '%s' with out-of-range space number %d", device.tag(), spacenum);
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memory->m_address_map[spacenum] = map;
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}
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//-------------------------------------------------
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// set_address_space - connect an address space
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// to a device
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//-------------------------------------------------
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void device_memory_interface::set_address_space(address_spacenum spacenum, address_space &space)
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{
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assert(spacenum < ARRAY_LENGTH(m_addrspace));
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m_addrspace[spacenum] = &space;
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}
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//-------------------------------------------------
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// memory_translate - translate from logical to
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// phyiscal addresses; designed to be overridden
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// by the actual device implementation if address
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// translation is supported
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//-------------------------------------------------
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bool device_memory_interface::memory_translate(address_spacenum spacenum, int intention, offs_t &address)
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{
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// by default it maps directly
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return true;
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}
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//-------------------------------------------------
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// memory_read - perform internal memory
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// operations that bypass the memory system;
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// designed to be overridden by the actual device
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// implementation if internal read operations are
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// handled by bypassing the memory system
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//-------------------------------------------------
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bool device_memory_interface::memory_read(address_spacenum spacenum, offs_t offset, int size, UINT64 &value)
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{
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// by default, we don't do anything
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return false;
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}
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//-------------------------------------------------
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// memory_write - perform internal memory
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// operations that bypass the memory system;
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// designed to be overridden by the actual device
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// implementation if internal write operations are
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// handled by bypassing the memory system
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//-------------------------------------------------
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bool device_memory_interface::memory_write(address_spacenum spacenum, offs_t offset, int size, UINT64 value)
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{
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// by default, we don't do anything
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return false;
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}
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//-------------------------------------------------
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// memory_readop - perform internal memory
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// operations that bypass the memory system;
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// designed to be overridden by the actual device
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// implementation if internal opcode fetching
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// operations are handled by bypassing the memory
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// system
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//-------------------------------------------------
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bool device_memory_interface::memory_readop(offs_t offset, int size, UINT64 &value)
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{
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// by default, we don't do anything
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return false;
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}
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//-------------------------------------------------
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// interface_validity_check - perform validity
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// checks on the memory configuration
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//-------------------------------------------------
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void device_memory_interface::interface_validity_check(validity_checker &valid) const
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{
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// loop over all address spaces
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for (address_spacenum spacenum = AS_0; spacenum < ADDRESS_SPACES; ++spacenum)
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{
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if (space_config(spacenum) != nullptr)
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{
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// construct the map
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::address_map addrmap(const_cast<device_t &>(device()), spacenum);
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// let the map check itself
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addrmap.map_validity_check(valid, device(), spacenum);
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}
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}
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}
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