0cd7346b9c
but if you hand edit cpu/cpu.h, and change BxICacheEntries, you can try different sizes. I'll make this more flexible with configure. For now, use "--enable-icache" with no parameters. - Modified fetchdecode.cc/fetchdecode64.cc just enough so that instructions which encode a direct address now use a memory resolution function which just sticks the immediate address into rm_addr. With cached instructions we need this.
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: memory.h,v 1.11 2002-09-19 19:17:20 kevinlawton 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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// 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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#define BX_USE_MEM_SMF 0
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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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// alignment of memory vector, must be a power of 2
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#define BX_MEM_VECTOR_ALIGN 4096
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class BX_MEM_C : public logfunctions {
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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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#if BX_PCI_SUPPORT
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Bit8u shadow[4*16*4096]; // 256k of memory
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#endif
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#if BX_DEBUGGER
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unsigned char dbg_dirty_pages[(BX_MAX_DIRTY_PAGE_TABLE_MEGS * 1024 * 1024) / 4096];
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Bit32u dbg_count_dirty_pages () {
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return (BX_MAX_DIRTY_PAGE_TABLE_MEGS * 1024 * 1024) / 4096;
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}
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#endif
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BX_MEM_C(void);
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BX_MEM_C(size_t memsize);
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~BX_MEM_C(void);
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BX_MEM_SMF void alloc_vector_aligned (size_t bytes, size_t alignment);
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BX_MEM_SMF void init_memory(int memsize);
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BX_MEM_SMF void readPhysicalPage(BX_CPU_C *cpu, Bit32u addr,
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unsigned len, void *data);
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BX_MEM_SMF void writePhysicalPage(BX_CPU_C *cpu, Bit32u addr,
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unsigned len, void *data);
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BX_MEM_SMF void load_ROM(const char *path, Bit32u romaddress);
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BX_MEM_SMF Bit32u get_memory_in_k(void);
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#if BX_PCI_SUPPORT
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BX_MEM_SMF Bit8u* pci_fetch_ptr(Bit32u addr);
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#endif
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BX_MEM_SMF Boolean dbg_fetch_mem(Bit32u addr, unsigned len, Bit8u *buf);
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BX_MEM_SMF Boolean dbg_set_mem(Bit32u addr, unsigned len, Bit8u *buf);
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BX_MEM_SMF Boolean dbg_crc32(
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unsigned long (*f)(unsigned char *buf, int len),
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Bit32u addr1, Bit32u addr2, Bit32u *crc);
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BX_MEM_SMF Bit8u * getHostMemAddr(BX_CPU_C *cpu, Bit32u a20Addr, unsigned op);
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};
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#if BX_PROVIDE_CPU_MEMORY==1
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#if BX_SMP_PROCESSORS==1
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extern BX_MEM_C bx_mem;
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#else
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extern BX_MEM_C *bx_mem_array[BX_ADDRESS_SPACES];
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#endif /* BX_SMP_PROCESSORS */
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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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