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lxdream.org :: lxdream/src/sh4/sh4mem.c
lxdream 0.9.1
released Jun 29
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filename src/sh4/sh4mem.c
changeset 550:a27e31340147
prev527:14c9489f647e
next559:06714bc64271
next586:2a3ba82cf243
author nkeynes
date Thu Dec 06 10:43:30 2007 +0000 (12 years ago)
permissions -rw-r--r--
last change Add support for the MMIO side of the TLB (and LDTLB)
file annotate diff log raw
nkeynes@10
     1
/**
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 * $Id: sh4mem.c,v 1.31 2007-11-08 12:01:57 nkeynes Exp $
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 * sh4mem.c is responsible for the SH4's access to memory (including memory
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 * mapped I/O), using the page maps created in mem.c
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 *
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 * Copyright (c) 2005 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program 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
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 * GNU General Public License for more details.
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 */
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#define MODULE sh4_module
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#define ENABLE_TRACE_IO 1
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#include <string.h>
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#include <zlib.h>
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#include "dream.h"
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#include "mem.h"
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#include "mmio.h"
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#include "dreamcast.h"
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#include "sh4/sh4core.h"
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#include "sh4/sh4mmio.h"
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#include "sh4/xltcache.h"
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#include "pvr2/pvr2.h"
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#include "asic.h"
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#define OC_BASE 0x1C000000
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#define OC_TOP  0x20000000
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#define TRANSLATE_VIDEO_64BIT_ADDRESS(a)  ( (((a)&0x00FFFFF8)>>1)|(((a)&0x00000004)<<20)|((a)&0x03)|0x05000000 )
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#ifdef ENABLE_WATCH
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#define CHECK_READ_WATCH( addr, size ) \
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    if( mem_is_watched(addr,size,WATCH_READ) != NULL ) { \
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        WARN( "Watch triggered at %08X by %d byte read", addr, size ); \
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        dreamcast_stop(); \
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    }
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#define CHECK_WRITE_WATCH( addr, size, val )                  \
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    if( mem_is_watched(addr,size,WATCH_WRITE) != NULL ) { \
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        WARN( "Watch triggered at %08X by %d byte write <= %0*X", addr, size, size*2, val ); \
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        dreamcast_stop(); \
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    }
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#else
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#define CHECK_READ_WATCH( addr, size )
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#define CHECK_WRITE_WATCH( addr, size, val )
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#endif
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#ifdef ENABLE_TRACE_IO
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#define TRACE_IO( str, p, r, ... ) if(io_rgn[(uint32_t)p]->trace_flag && !MMIO_NOTRACE_BYNUM((uint32_t)p,r)) \
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    TRACE( str " [%s.%s: %s]", __VA_ARGS__,			       \
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    MMIO_NAME_BYNUM((uint32_t)p), MMIO_REGID_BYNUM((uint32_t)p, r), \
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    MMIO_REGDESC_BYNUM((uint32_t)p, r) )
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#define TRACE_P4IO( str, io, r, ... ) if(io->trace_flag && !MMIO_NOTRACE_IOBYNUM(io,r)) \
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TRACE( str " [%s.%s: %s]", __VA_ARGS__, \
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    io->id, MMIO_REGID_IOBYNUM(io, r), \
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    MMIO_REGDESC_IOBYNUM(io, r) )
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#else
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#define TRACE_IO( str, p, r, ... )
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#define TRACE_P4IO( str, io, r, ... )
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#endif
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extern struct mem_region mem_rgn[];
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extern struct mmio_region *P4_io[];
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sh4ptr_t sh4_main_ram;
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int32_t sh4_read_p4( sh4addr_t addr )
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{
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    struct mmio_region *io = P4_io[(addr&0x1FFFFFFF)>>19];
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    if( !io ) {
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	switch( addr & 0x1F000000 ) {
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	case 0x00000000: case 0x01000000: case 0x02000000: case 0x03000000: 
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	    /* Store queue - readable? */
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	    return 0;
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	    break;
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	case 0x10000000: return mmu_icache_addr_read( addr );
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	case 0x11000000: return mmu_icache_data_read( addr );
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	case 0x12000000: return mmu_itlb_addr_read( addr );
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	case 0x13000000: return mmu_itlb_data_read( addr );
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	case 0x14000000: return mmu_ocache_addr_read( addr );
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	case 0x15000000: return mmu_ocache_data_read( addr );
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	case 0x16000000: return mmu_utlb_addr_read( addr );
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	case 0x17000000: return mmu_utlb_data_read( addr );
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	default:
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            WARN( "Attempted read from unknown or invalid P4 region: %08X", addr );
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	    return 0;
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        }
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    } else {
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	int32_t val = io->io_read( addr&0xFFF );
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	TRACE_P4IO( "Long read %08X <= %08X", io, (addr&0xFFF), val, addr );
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        return val;
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    }    
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}
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void sh4_write_p4( sh4addr_t addr, int32_t val )
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{
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    struct mmio_region *io = P4_io[(addr&0x1FFFFFFF)>>19];
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    if( !io ) {
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	switch( addr & 0x1F000000 ) {
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	case 0x00000000: case 0x01000000: case 0x02000000: case 0x03000000: 
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            /* Store queue */
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            SH4_WRITE_STORE_QUEUE( addr, val );
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	    break;
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	case 0x10000000: mmu_icache_addr_write( addr, val ); break;
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	case 0x11000000: mmu_icache_data_write( addr, val ); break;
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	case 0x12000000: mmu_itlb_addr_write( addr, val ); break;
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	case 0x13000000: mmu_itlb_data_write( addr, val ); break;
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	case 0x14000000: mmu_ocache_addr_write( addr, val ); break;
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	case 0x15000000: mmu_ocache_data_write( addr, val ); break;
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	case 0x16000000: mmu_utlb_addr_write( addr, val ); break;
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	case 0x17000000: mmu_utlb_data_write( addr, val ); break;
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	default:
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            WARN( "Attempted write to unknown P4 region: %08X", addr );
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        }
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    } else {
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	TRACE_P4IO( "Long write %08X => %08X", io, (addr&0xFFF), val, addr );
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        io->io_write( addr&0xFFF, val );
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    }
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}
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int32_t sh4_read_phys_word( sh4addr_t addr )
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{
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    sh4ptr_t page;
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    if( addr >= 0xE0000000 ) /* P4 Area, handled specially */
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        return SIGNEXT16(sh4_read_p4( addr ));
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    if( (addr&0x1F800000) == 0x04000000 ) {
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        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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   135
    }
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    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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        if( page == NULL ) {
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            WARN( "Attempted word read to missing page: %08X",
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                   addr );
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            return 0;
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        }
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        return SIGNEXT16(io_rgn[(uintptr_t)page]->io_read(addr&0xFFF));
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    } else {
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        return SIGNEXT16(*(int16_t *)(page+(addr&0xFFF)));
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    }
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}
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/**
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 * Convenience function to read a quad-word (implemented as two long reads).
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 */
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int64_t sh4_read_quad( sh4addr_t addr )
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{
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    return ((int64_t)((uint32_t)sh4_read_long(addr))) |
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	(((int64_t)((uint32_t)sh4_read_long(addr+4))) << 32);
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   157
}
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int32_t sh4_read_long( sh4addr_t addr )
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{
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    sh4ptr_t page;
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    CHECK_READ_WATCH(addr,4);
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    if( addr >= 0xE0000000 ) { /* P4 Area, handled specially */
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        return sh4_read_p4( addr );
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    } else if( (addr&0x1C000000) == 0x0C000000 ) {
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	return *(int32_t *)(sh4_main_ram + (addr&0x00FFFFFF));
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    } else if( (addr&0x1F800000) == 0x04000000 ) {
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        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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	pvr2_render_buffer_invalidate(addr, FALSE);
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    } else if( (addr&0x1F800000) == 0x05000000 ) {
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	pvr2_render_buffer_invalidate(addr, FALSE);
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    }
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    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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        int32_t val;
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        if( page == NULL ) {
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            WARN( "Attempted long read to missing page: %08X", addr );
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            return 0;
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        }
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        val = io_rgn[(uintptr_t)page]->io_read(addr&0xFFF);
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        TRACE_IO( "Long read %08X <= %08X", page, (addr&0xFFF), val, addr );
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        return val;
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    } else {
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        return *(int32_t *)(page+(addr&0xFFF));
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    }
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}
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int32_t sh4_read_word( sh4addr_t addr )
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{
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    sh4ptr_t page;
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    CHECK_READ_WATCH(addr,2);
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    if( addr >= 0xE0000000 ) { /* P4 Area, handled specially */
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        return SIGNEXT16(sh4_read_p4( addr ));
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    } else if( (addr&0x1C000000) == 0x0C000000 ) {
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	return SIGNEXT16(*(int16_t *)(sh4_main_ram + (addr&0x00FFFFFF)));
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    } else if( (addr&0x1F800000) == 0x04000000 ) {
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        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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	pvr2_render_buffer_invalidate(addr, FALSE);
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    } else if( (addr&0x1F800000) == 0x05000000 ) {
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	pvr2_render_buffer_invalidate(addr, FALSE);
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    }
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    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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        int32_t val;
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   211
        if( page == NULL ) {
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	    WARN( "Attempted word read to missing page: %08X", addr );
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            return 0;
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   214
        }
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        val = SIGNEXT16(io_rgn[(uintptr_t)page]->io_read(addr&0xFFF));
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        TRACE_IO( "Word read %04X <= %08X", page, (addr&0xFFF), val&0xFFFF, addr );
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        return val;
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    } else {
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        return SIGNEXT16(*(int16_t *)(page+(addr&0xFFF)));
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   220
    }
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   221
}
nkeynes@10
   222
nkeynes@527
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int32_t sh4_read_byte( sh4addr_t addr )
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{
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    sh4ptr_t page;
nkeynes@10
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    CHECK_READ_WATCH(addr,1);
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nkeynes@418
   229
    if( addr >= 0xE0000000 ) { /* P4 Area, handled specially */
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        return SIGNEXT8(sh4_read_p4( addr ));
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   231
    } else if( (addr&0x1C000000) == 0x0C000000 ) {
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   232
	return SIGNEXT8(*(int8_t *)(sh4_main_ram + (addr&0x00FFFFFF)));
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   233
    } else if( (addr&0x1F800000) == 0x04000000 ) {
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   234
        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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   235
    	pvr2_render_buffer_invalidate(addr, FALSE);
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   236
    } else if( (addr&0x1F800000) == 0x05000000 ) {
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   237
	pvr2_render_buffer_invalidate(addr, FALSE);
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   238
    }
nkeynes@217
   239
nkeynes@10
   240
    
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    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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   243
        int32_t val;
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   244
        if( page == NULL ) {
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   245
            WARN( "Attempted byte read to missing page: %08X", addr );
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   246
            return 0;
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   247
        }
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        val = SIGNEXT8(io_rgn[(uintptr_t)page]->io_read(addr&0xFFF));
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   249
        TRACE_IO( "Byte read %02X <= %08X", page, (addr&0xFFF), val&0xFF, addr );
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   250
        return val;
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   251
    } else {
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   252
        return SIGNEXT8(*(int8_t *)(page+(addr&0xFFF)));
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   253
    }
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   254
}
nkeynes@10
   255
nkeynes@527
   256
/**
nkeynes@527
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 * Convenience function to write a quad-word (implemented as two long writes).
nkeynes@527
   258
 */
nkeynes@527
   259
void sh4_write_quad( sh4addr_t addr, uint64_t val )
nkeynes@527
   260
{
nkeynes@527
   261
    sh4_write_long( addr, (uint32_t)val );
nkeynes@527
   262
    sh4_write_long( addr+4, (uint32_t)(val>>32) );
nkeynes@527
   263
}
nkeynes@527
   264
nkeynes@527
   265
void sh4_write_long( sh4addr_t addr, uint32_t val )
nkeynes@10
   266
{
nkeynes@502
   267
    sh4ptr_t page;
nkeynes@400
   268
nkeynes@10
   269
    CHECK_WRITE_WATCH(addr,4,val);
nkeynes@10
   270
nkeynes@83
   271
    if( addr >= 0xE0000000 ) {
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   272
        sh4_write_p4( addr, val );
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   273
        return;
nkeynes@418
   274
    } else if( (addr&0x1C000000) == 0x0C000000 ) {
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   275
	*(uint32_t *)(sh4_main_ram + (addr&0x00FFFFFF)) = val;
nkeynes@419
   276
	xlat_invalidate_long(addr);
nkeynes@418
   277
	return;
nkeynes@418
   278
    } else if( (addr&0x1F800000) == 0x04000000 || 
nkeynes@418
   279
	       (addr&0x1F800000) == 0x11000000 ) {
nkeynes@150
   280
	texcache_invalidate_page(addr& 0x7FFFFF);
nkeynes@10
   281
        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
nkeynes@355
   282
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@165
   283
    } else if( (addr&0x1F800000) == 0x05000000 ) {
nkeynes@355
   284
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@10
   285
    }
nkeynes@10
   286
nkeynes@10
   287
    if( (addr&0x1FFFFFFF) < 0x200000 ) {
nkeynes@448
   288
        WARN( "Attempted write to read-only memory: %08X => %08X", val, addr);
nkeynes@10
   289
        sh4_stop();
nkeynes@10
   290
        return;
nkeynes@10
   291
    }
nkeynes@137
   292
    if( (addr&0x1F800000) == 0x00800000 )
nkeynes@137
   293
	asic_g2_write_word();
nkeynes@137
   294
nkeynes@10
   295
    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
nkeynes@504
   296
    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
nkeynes@10
   297
        if( page == NULL ) {
nkeynes@137
   298
	    if( (addr & 0x1F000000) >= 0x04000000 &&
nkeynes@137
   299
		(addr & 0x1F000000) < 0x07000000 )
nkeynes@137
   300
		return;
nkeynes@448
   301
            WARN( "Long write to missing page: %08X => %08X", val, addr );
nkeynes@10
   302
            return;
nkeynes@10
   303
        }
nkeynes@10
   304
        TRACE_IO( "Long write %08X => %08X", page, (addr&0xFFF), val, addr );
nkeynes@504
   305
        io_rgn[(uintptr_t)page]->io_write(addr&0xFFF, val);
nkeynes@10
   306
    } else {
nkeynes@10
   307
        *(uint32_t *)(page+(addr&0xFFF)) = val;
nkeynes@10
   308
    }
nkeynes@10
   309
}
nkeynes@10
   310
nkeynes@527
   311
void sh4_write_word( sh4addr_t addr, uint32_t val )
nkeynes@10
   312
{
nkeynes@502
   313
    sh4ptr_t page;
nkeynes@10
   314
nkeynes@10
   315
    CHECK_WRITE_WATCH(addr,2,val);
nkeynes@10
   316
nkeynes@83
   317
    if( addr >= 0xE0000000 ) {
nkeynes@10
   318
        sh4_write_p4( addr, (int16_t)val );
nkeynes@10
   319
        return;
nkeynes@418
   320
    } else if( (addr&0x1C000000) == 0x0C000000 ) {
nkeynes@418
   321
	*(uint16_t *)(sh4_main_ram + (addr&0x00FFFFFF)) = val;
nkeynes@419
   322
	xlat_invalidate_word(addr);
nkeynes@418
   323
	return;
nkeynes@418
   324
    } else if( (addr&0x1F800000) == 0x04000000 ||
nkeynes@130
   325
	(addr&0x1F800000) == 0x11000000 ) {
nkeynes@150
   326
	texcache_invalidate_page(addr& 0x7FFFFF);
nkeynes@10
   327
        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
nkeynes@355
   328
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@165
   329
    } else if( (addr&0x1F800000) == 0x05000000 ) {
nkeynes@355
   330
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@10
   331
    }
nkeynes@406
   332
nkeynes@400
   333
    if( (addr&0x1FFFFFFF) < 0x200000 ) {
nkeynes@448
   334
        WARN( "Attempted write to read-only memory: %08X => %08X", val, addr);
nkeynes@400
   335
        sh4_stop();
nkeynes@400
   336
        return;
nkeynes@400
   337
    }
nkeynes@10
   338
    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
nkeynes@504
   339
    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
nkeynes@10
   340
        if( page == NULL ) {
nkeynes@448
   341
            WARN( "Attempted word write to missing page: %08X", addr );
nkeynes@10
   342
            return;
nkeynes@10
   343
        }
nkeynes@10
   344
        TRACE_IO( "Word write %04X => %08X", page, (addr&0xFFF), val&0xFFFF, addr );
nkeynes@504
   345
        io_rgn[(uintptr_t)page]->io_write(addr&0xFFF, val);
nkeynes@10
   346
    } else {
nkeynes@10
   347
        *(uint16_t *)(page+(addr&0xFFF)) = val;
nkeynes@10
   348
    }
nkeynes@10
   349
}
nkeynes@10
   350
nkeynes@527
   351
void sh4_write_byte( sh4addr_t addr, uint32_t val )
nkeynes@10
   352
{
nkeynes@502
   353
    sh4ptr_t page;
nkeynes@10
   354
    
nkeynes@10
   355
    CHECK_WRITE_WATCH(addr,1,val);
nkeynes@10
   356
nkeynes@83
   357
    if( addr >= 0xE0000000 ) {
nkeynes@10
   358
        sh4_write_p4( addr, (int8_t)val );
nkeynes@10
   359
        return;
nkeynes@418
   360
    } else if( (addr&0x1C000000) == 0x0C000000 ) {
nkeynes@418
   361
	*(uint8_t *)(sh4_main_ram + (addr&0x00FFFFFF)) = val;
nkeynes@419
   362
	xlat_invalidate_word(addr);
nkeynes@418
   363
	return;
nkeynes@418
   364
    } else if( (addr&0x1F800000) == 0x04000000 ||
nkeynes@418
   365
	       (addr&0x1F800000) == 0x11000000 ) {
nkeynes@150
   366
	texcache_invalidate_page(addr& 0x7FFFFF);
nkeynes@10
   367
        addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
nkeynes@355
   368
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@165
   369
    } else if( (addr&0x1F800000) == 0x05000000 ) {
nkeynes@355
   370
	pvr2_render_buffer_invalidate(addr, TRUE);
nkeynes@10
   371
    }
nkeynes@10
   372
    
nkeynes@400
   373
    if( (addr&0x1FFFFFFF) < 0x200000 ) {
nkeynes@448
   374
        WARN( "Attempted write to read-only memory: %08X => %08X", val, addr);
nkeynes@400
   375
        sh4_stop();
nkeynes@400
   376
        return;
nkeynes@400
   377
    }
nkeynes@10
   378
    page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
nkeynes@504
   379
    if( ((uintptr_t)page) < MAX_IO_REGIONS ) { /* IO Region */
nkeynes@10
   380
        if( page == NULL ) {
nkeynes@448
   381
            WARN( "Attempted byte write to missing page: %08X", addr );
nkeynes@10
   382
            return;
nkeynes@10
   383
        }
nkeynes@10
   384
        TRACE_IO( "Byte write %02X => %08X", page, (addr&0xFFF), val&0xFF, addr );
nkeynes@504
   385
        io_rgn[(uintptr_t)page]->io_write( (addr&0xFFF), val);
nkeynes@10
   386
    } else {
nkeynes@10
   387
        *(uint8_t *)(page+(addr&0xFFF)) = val;
nkeynes@10
   388
    }
nkeynes@10
   389
}
nkeynes@10
   390
nkeynes@10
   391
nkeynes@10
   392
nkeynes@10
   393
/* FIXME: Handle all the many special cases when the range doesn't fall cleanly
nkeynes@400
   394
 * into the same memory block
nkeynes@10
   395
 */
nkeynes@527
   396
void mem_copy_from_sh4( sh4ptr_t dest, sh4addr_t srcaddr, size_t count ) {
nkeynes@103
   397
    if( srcaddr >= 0x04000000 && srcaddr < 0x05000000 ) {
nkeynes@103
   398
	pvr2_vram64_read( dest, srcaddr, count );
nkeynes@103
   399
    } else {
nkeynes@502
   400
	sh4ptr_t src = mem_get_region(srcaddr);
nkeynes@103
   401
	if( src == NULL ) {
nkeynes@448
   402
	    WARN( "Attempted block read from unknown address %08X", srcaddr );
nkeynes@103
   403
	} else {
nkeynes@103
   404
	    memcpy( dest, src, count );
nkeynes@103
   405
	}
nkeynes@103
   406
    }
nkeynes@10
   407
}
nkeynes@10
   408
nkeynes@527
   409
void mem_copy_to_sh4( sh4addr_t destaddr, sh4ptr_t src, size_t count ) {
nkeynes@325
   410
    if( destaddr >= 0x10000000 && destaddr < 0x14000000 ) {
nkeynes@325
   411
	pvr2_dma_write( destaddr, src, count );
nkeynes@325
   412
	return;
nkeynes@325
   413
    } else if( (destaddr & 0x1F800000) == 0x05000000 ) {
nkeynes@355
   414
	pvr2_render_buffer_invalidate( destaddr, TRUE );
nkeynes@325
   415
    } else if( (destaddr & 0x1F800000) == 0x04000000 ) {
nkeynes@103
   416
	pvr2_vram64_write( destaddr, src, count );
nkeynes@325
   417
	return;
nkeynes@325
   418
    }
nkeynes@502
   419
    sh4ptr_t dest = mem_get_region(destaddr);
nkeynes@325
   420
    if( dest == NULL )
nkeynes@448
   421
	WARN( "Attempted block write to unknown address %08X", destaddr );
nkeynes@325
   422
    else {
nkeynes@400
   423
	xlat_invalidate_block( destaddr, count );
nkeynes@325
   424
	memcpy( dest, src, count );
nkeynes@90
   425
    }
nkeynes@10
   426
}
nkeynes@369
   427
nkeynes@527
   428
void sh4_flush_store_queue( sh4addr_t addr )
nkeynes@369
   429
{
nkeynes@369
   430
    /* Store queue operation */
nkeynes@369
   431
    int queue = (addr&0x20)>>2;
nkeynes@502
   432
    sh4ptr_t src = (sh4ptr_t)&sh4r.store_queue[queue];
nkeynes@369
   433
    uint32_t hi = (MMIO_READ( MMU, (queue == 0 ? QACR0 : QACR1) ) & 0x1C) << 24;
nkeynes@422
   434
    uint32_t target = (addr&0x03FFFFE0) | hi;
nkeynes@369
   435
    mem_copy_to_sh4( target, src, 32 );
nkeynes@369
   436
}
.