127 lines
4.6 KiB
C++
127 lines
4.6 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: memory.h,v 1.40 2006-09-15 17:02:52 vruppert Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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//
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// I/O memory handlers API Copyright (C) 2003 by Frank Cornelis
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#ifndef BX_MEM_H
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# define BX_MEM_H 1
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#if BX_USE_MEM_SMF
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// if static member functions on, then there is only one memory
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# define BX_MEM_SMF static
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# define BX_MEM_THIS BX_MEM(0)->
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#else
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# define BX_MEM_SMF
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# define BX_MEM_THIS this->
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#endif
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class BX_CPU_C;
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// alignment of memory vector, must be a power of 2
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#define BX_MEM_VECTOR_ALIGN 4096
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#define BIOSROMSZ (1 << 19) // 512KB BIOS ROM @0xfff80000, must be a power of 2
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#define EXROMSIZE 0x20000 // ROMs 0xc0000-0xdffff (area 0xe0000-0xfffff=bios mapped)
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#define BIOS_MASK (BIOSROMSZ-1)
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#define EXROM_MASK (EXROMSIZE-1)
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typedef bx_bool (*memory_handler_t)(unsigned long addr, unsigned long len, void *data, void *param);
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struct memory_handler_struct {
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struct memory_handler_struct *next;
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void *param;
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bx_phy_address begin;
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bx_phy_address end;
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memory_handler_t read_handler;
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memory_handler_t write_handler;
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};
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#define SMRAM_CODE 1
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#define SMRAM_DATA 2
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class BOCHSAPI BX_MEM_C : public logfunctions {
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private:
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struct memory_handler_struct **memory_handlers;
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bx_bool rom_present[65];
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bx_bool pci_enabled;
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bx_bool smram_available;
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bx_bool smram_enable;
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bx_bool smram_restricted;
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public:
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Bit8u *actual_vector;
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Bit8u *vector; // aligned correctly
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size_t len;
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size_t megabytes; // (len in Megabytes)
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Bit8u *rom; // 512k BIOS rom space + 128k expansion rom space
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Bit8u *bogus; // 4k for unexisting memory
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#if BX_DEBUGGER
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Bit8u *dbg_dirty_pages;
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#endif
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BX_MEM_C();
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~BX_MEM_C();
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BX_MEM_SMF void alloc_vector_aligned (size_t bytes, size_t alignment) BX_CPP_AttrRegparmN(2);
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BX_MEM_SMF void init_memory(int memsize);
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BX_MEM_SMF void cleanup_memory(void);
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BX_MEM_SMF void enable_smram(bx_bool enable, bx_bool restricted);
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BX_MEM_SMF void disable_smram(void);
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BX_MEM_SMF bx_bool is_smram_accessible(void);
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BX_MEM_SMF void readPhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
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unsigned len, void *data) BX_CPP_AttrRegparmN(3);
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BX_MEM_SMF void writePhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
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unsigned len, void *data) BX_CPP_AttrRegparmN(3);
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BX_MEM_SMF void load_ROM(const char *path, bx_phy_address romaddress, Bit8u type);
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BX_MEM_SMF void load_RAM(const char *path, bx_phy_address romaddress, Bit8u type);
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BX_MEM_SMF Bit32u get_memory_in_k(void);
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BX_MEM_SMF bx_bool dbg_fetch_mem(bx_phy_address addr, unsigned len, Bit8u *buf);
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BX_MEM_SMF bx_bool dbg_set_mem(bx_phy_address addr, unsigned len, Bit8u *buf);
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BX_MEM_SMF bx_bool dbg_crc32(bx_phy_address addr1, bx_phy_address addr2, Bit32u *crc);
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BX_MEM_SMF Bit8u* getHostMemAddr(BX_CPU_C *cpu, bx_phy_address a20Addr, unsigned op, unsigned access_type);
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BX_MEM_SMF bx_bool registerMemoryHandlers(void *param, memory_handler_t read_handler,
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memory_handler_t write_handler, bx_phy_address begin_addr, bx_phy_address end_addr);
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BX_MEM_SMF bx_bool unregisterMemoryHandlers(memory_handler_t read_handler, memory_handler_t write_handler,
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bx_phy_address begin_addr, bx_phy_address end_addr);
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BX_MEM_SMF Bit32u get_num_allocated_pages(void);
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};
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#if BX_PROVIDE_CPU_MEMORY==1
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#if BX_ADDRESS_SPACES==1
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BOCHSAPI extern BX_MEM_C bx_mem;
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#else
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BOCHSAPI extern BX_MEM_C bx_mem_array[BX_ADDRESS_SPACES];
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#endif /* BX_ADDRESS_SPACES */
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#endif /* BX_PROVIDE_CPU_MEMORY==1 */
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#if BX_DEBUGGER
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# define BX_DBG_DIRTY_PAGE(page) BX_MEM(0)->dbg_dirty_pages[page] = 1;
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#else
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# define BX_DBG_DIRTY_PAGE(page)
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#endif
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#endif
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