nkeynes@10 | 1 | /**
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nkeynes@156 | 2 | * $Id: sh4mem.c,v 1.12 2006-06-15 10:25:45 nkeynes Exp $
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nkeynes@10 | 3 | * sh4mem.c is responsible for the SH4's access to memory (including memory
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nkeynes@10 | 4 | * mapped I/O), using the page maps created in mem.c
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nkeynes@10 | 5 | *
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nkeynes@10 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@10 | 7 | *
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nkeynes@10 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@10 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@10 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@10 | 11 | * (at your option) any later version.
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nkeynes@10 | 12 | *
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nkeynes@10 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@10 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@10 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@10 | 16 | * GNU General Public License for more details.
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nkeynes@10 | 17 | */
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nkeynes@10 | 18 |
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nkeynes@35 | 19 | #define MODULE sh4_module
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nkeynes@35 | 20 |
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nkeynes@10 | 21 | #include <string.h>
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nkeynes@10 | 22 | #include <zlib.h>
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nkeynes@10 | 23 | #include "dream.h"
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nkeynes@10 | 24 | #include "mem.h"
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nkeynes@10 | 25 | #include "mmio.h"
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nkeynes@70 | 26 | #include "sh4core.h"
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nkeynes@10 | 27 | #include "sh4mmio.h"
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nkeynes@10 | 28 | #include "dreamcast.h"
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nkeynes@100 | 29 | #include "pvr2/pvr2.h"
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nkeynes@10 | 30 |
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nkeynes@10 | 31 | #define OC_BASE 0x1C000000
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nkeynes@10 | 32 | #define OC_TOP 0x20000000
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nkeynes@10 | 33 |
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nkeynes@90 | 34 | #define TRANSLATE_VIDEO_64BIT_ADDRESS(a) ( (((a)&0x00FFFFF8)>>1)|(((a)&0x00000004)<<20)|((a)&0x03)|0x05000000 )
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nkeynes@10 | 35 |
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nkeynes@10 | 36 | #ifdef ENABLE_WATCH
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nkeynes@10 | 37 | #define CHECK_READ_WATCH( addr, size ) \
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nkeynes@10 | 38 | if( mem_is_watched(addr,size,WATCH_READ) != NULL ) { \
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nkeynes@10 | 39 | WARN( "Watch triggered at %08X by %d byte read", addr, size ); \
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nkeynes@10 | 40 | dreamcast_stop(); \
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nkeynes@10 | 41 | }
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nkeynes@10 | 42 | #define CHECK_WRITE_WATCH( addr, size, val ) \
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nkeynes@10 | 43 | if( mem_is_watched(addr,size,WATCH_WRITE) != NULL ) { \
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nkeynes@10 | 44 | WARN( "Watch triggered at %08X by %d byte write <= %0*X", addr, size, size*2, val ); \
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nkeynes@10 | 45 | dreamcast_stop(); \
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nkeynes@10 | 46 | }
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nkeynes@10 | 47 | #else
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nkeynes@10 | 48 | #define CHECK_READ_WATCH( addr, size )
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nkeynes@10 | 49 | #define CHECK_WRITE_WATCH( addr, size )
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nkeynes@10 | 50 | #endif
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nkeynes@10 | 51 |
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nkeynes@10 | 52 | #define TRACE_IO( str, p, r, ... ) if(io_rgn[(uint32_t)p]->trace_flag) \
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nkeynes@10 | 53 | TRACE( str " [%s.%s: %s]", __VA_ARGS__, \
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nkeynes@10 | 54 | MMIO_NAME_BYNUM((uint32_t)p), MMIO_REGID_BYNUM((uint32_t)p, r), \
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nkeynes@10 | 55 | MMIO_REGDESC_BYNUM((uint32_t)p, r) )
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nkeynes@156 | 56 | #define TRACE_P4IO( str, io, r, ... ) if(io->trace_flag) \
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nkeynes@156 | 57 | TRACE( str " [%s.%s: %s]", __VA_ARGS__, \
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nkeynes@156 | 58 | io->id, MMIO_REGID_IOBYNUM(io, r), \
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nkeynes@156 | 59 | MMIO_REGDESC_IOBYNUM(io, r) )
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nkeynes@10 | 60 |
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nkeynes@10 | 61 | extern struct mem_region mem_rgn[];
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nkeynes@10 | 62 | extern struct mmio_region *P4_io[];
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nkeynes@10 | 63 |
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nkeynes@10 | 64 | int32_t sh4_read_p4( uint32_t addr )
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nkeynes@10 | 65 | {
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nkeynes@10 | 66 | struct mmio_region *io = P4_io[(addr&0x1FFFFFFF)>>19];
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nkeynes@10 | 67 | if( !io ) {
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nkeynes@10 | 68 | ERROR( "Attempted read from unknown P4 region: %08X", addr );
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nkeynes@10 | 69 | return 0;
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nkeynes@10 | 70 | } else {
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nkeynes@156 | 71 | int32_t val = io->io_read( addr&0xFFF );
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nkeynes@156 | 72 | TRACE_P4IO( "Long read %08X <= %08X", io, (addr&0xFFF), val, addr );
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nkeynes@156 | 73 | return val;
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nkeynes@10 | 74 | }
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nkeynes@10 | 75 | }
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nkeynes@10 | 76 |
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nkeynes@10 | 77 | void sh4_write_p4( uint32_t addr, int32_t val )
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nkeynes@10 | 78 | {
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nkeynes@10 | 79 | struct mmio_region *io = P4_io[(addr&0x1FFFFFFF)>>19];
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nkeynes@10 | 80 | if( !io ) {
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nkeynes@10 | 81 | if( (addr & 0xFC000000) == 0xE0000000 ) {
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nkeynes@10 | 82 | /* Store queue */
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nkeynes@10 | 83 | SH4_WRITE_STORE_QUEUE( addr, val );
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nkeynes@38 | 84 | } else if( (addr & 0xFF000000) != 0xF4000000 ) {
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nkeynes@38 | 85 | /* OC address cache isn't implemented, but don't complain about it.
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nkeynes@38 | 86 | * Complain about anything else though */
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nkeynes@10 | 87 | ERROR( "Attempted write to unknown P4 region: %08X", addr );
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nkeynes@10 | 88 | }
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nkeynes@10 | 89 | } else {
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nkeynes@156 | 90 | TRACE_P4IO( "Long write %08X => %08X", io, (addr&0xFFF), val, addr );
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nkeynes@10 | 91 | io->io_write( addr&0xFFF, val );
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nkeynes@10 | 92 | }
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nkeynes@10 | 93 | }
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nkeynes@10 | 94 |
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nkeynes@10 | 95 | int32_t sh4_read_phys_word( uint32_t addr )
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nkeynes@10 | 96 | {
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nkeynes@10 | 97 | char *page;
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nkeynes@83 | 98 | if( addr >= 0xE0000000 ) /* P4 Area, handled specially */
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nkeynes@10 | 99 | return SIGNEXT16(sh4_read_p4( addr ));
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nkeynes@10 | 100 |
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nkeynes@10 | 101 | if( (addr&0x1F800000) == 0x04000000 ) {
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nkeynes@10 | 102 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 103 | }
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nkeynes@10 | 104 |
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nkeynes@10 | 105 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 106 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 107 | if( page == NULL ) {
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nkeynes@10 | 108 | ERROR( "Attempted word read to missing page: %08X",
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nkeynes@10 | 109 | addr );
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nkeynes@10 | 110 | return 0;
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nkeynes@10 | 111 | }
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nkeynes@10 | 112 | return SIGNEXT16(io_rgn[(uint32_t)page]->io_read(addr&0xFFF));
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nkeynes@10 | 113 | } else {
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nkeynes@10 | 114 | return SIGNEXT16(*(int16_t *)(page+(addr&0xFFF)));
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nkeynes@10 | 115 | }
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nkeynes@10 | 116 | }
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nkeynes@10 | 117 |
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nkeynes@10 | 118 | int32_t sh4_read_long( uint32_t addr )
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nkeynes@10 | 119 | {
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nkeynes@10 | 120 | char *page;
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nkeynes@10 | 121 |
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nkeynes@10 | 122 | CHECK_READ_WATCH(addr,4);
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nkeynes@10 | 123 |
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nkeynes@83 | 124 | if( addr >= 0xE0000000 ) /* P4 Area, handled specially */
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nkeynes@10 | 125 | return sh4_read_p4( addr );
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nkeynes@10 | 126 |
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nkeynes@10 | 127 | if( (addr&0x1F800000) == 0x04000000 ) {
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nkeynes@10 | 128 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 129 | }
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nkeynes@10 | 130 |
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nkeynes@10 | 131 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 132 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 133 | sh4_stop();
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nkeynes@10 | 134 | return 0;
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nkeynes@10 | 135 | }
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nkeynes@10 | 136 |
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nkeynes@10 | 137 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 138 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 139 | int32_t val;
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nkeynes@10 | 140 | if( page == NULL ) {
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nkeynes@10 | 141 | ERROR( "Attempted long read to missing page: %08X", addr );
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nkeynes@10 | 142 | return 0;
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nkeynes@10 | 143 | }
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nkeynes@10 | 144 | val = io_rgn[(uint32_t)page]->io_read(addr&0xFFF);
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nkeynes@10 | 145 | TRACE_IO( "Long read %08X <= %08X", page, (addr&0xFFF), val, addr );
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nkeynes@10 | 146 | return val;
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nkeynes@10 | 147 | } else {
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nkeynes@10 | 148 | return *(int32_t *)(page+(addr&0xFFF));
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nkeynes@10 | 149 | }
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nkeynes@10 | 150 | }
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nkeynes@10 | 151 |
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nkeynes@10 | 152 | int32_t sh4_read_word( uint32_t addr )
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nkeynes@10 | 153 | {
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nkeynes@10 | 154 | char *page;
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nkeynes@10 | 155 |
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nkeynes@10 | 156 | CHECK_READ_WATCH(addr,2);
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nkeynes@10 | 157 |
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nkeynes@83 | 158 | if( addr >= 0xE0000000 ) /* P4 Area, handled specially */
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nkeynes@10 | 159 | return SIGNEXT16(sh4_read_p4( addr ));
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nkeynes@10 | 160 |
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nkeynes@10 | 161 | if( (addr&0x1F800000) == 0x04000000 ) {
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nkeynes@10 | 162 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 163 | }
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nkeynes@10 | 164 |
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nkeynes@10 | 165 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 166 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 167 | sh4_stop();
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nkeynes@10 | 168 | return 0;
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nkeynes@10 | 169 | }
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nkeynes@10 | 170 |
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nkeynes@10 | 171 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 172 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 173 | int32_t val;
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nkeynes@10 | 174 | if( page == NULL ) {
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nkeynes@10 | 175 | ERROR( "Attempted word read to missing page: %08X", addr );
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nkeynes@10 | 176 | return 0;
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nkeynes@10 | 177 | }
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nkeynes@10 | 178 | val = SIGNEXT16(io_rgn[(uint32_t)page]->io_read(addr&0xFFF));
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nkeynes@10 | 179 | TRACE_IO( "Word read %04X <= %08X", page, (addr&0xFFF), val&0xFFFF, addr );
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nkeynes@10 | 180 | return val;
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nkeynes@10 | 181 | } else {
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nkeynes@10 | 182 | return SIGNEXT16(*(int16_t *)(page+(addr&0xFFF)));
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nkeynes@10 | 183 | }
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nkeynes@10 | 184 | }
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nkeynes@10 | 185 |
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nkeynes@10 | 186 | int32_t sh4_read_byte( uint32_t addr )
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nkeynes@10 | 187 | {
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nkeynes@10 | 188 | char *page;
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nkeynes@10 | 189 |
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nkeynes@10 | 190 | CHECK_READ_WATCH(addr,1);
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nkeynes@10 | 191 |
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nkeynes@83 | 192 | if( addr >= 0xE0000000 ) /* P4 Area, handled specially */
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nkeynes@10 | 193 | return SIGNEXT8(sh4_read_p4( addr ));
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nkeynes@10 | 194 | if( (addr&0x1F800000) == 0x04000000 ) {
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nkeynes@10 | 195 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 196 | }
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nkeynes@10 | 197 |
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nkeynes@10 | 198 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 199 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 200 | sh4_stop();
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nkeynes@10 | 201 | return 0;
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nkeynes@10 | 202 | }
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nkeynes@10 | 203 |
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nkeynes@10 | 204 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 205 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 206 | int32_t val;
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nkeynes@10 | 207 | if( page == NULL ) {
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nkeynes@10 | 208 | ERROR( "Attempted byte read to missing page: %08X", addr );
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nkeynes@10 | 209 | return 0;
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nkeynes@10 | 210 | }
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nkeynes@10 | 211 | val = SIGNEXT8(io_rgn[(uint32_t)page]->io_read(addr&0xFFF));
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nkeynes@10 | 212 | TRACE_IO( "Byte read %02X <= %08X", page, (addr&0xFFF), val&0xFF, addr );
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nkeynes@10 | 213 | return val;
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nkeynes@10 | 214 | } else {
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nkeynes@10 | 215 | return SIGNEXT8(*(int8_t *)(page+(addr&0xFFF)));
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nkeynes@10 | 216 | }
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nkeynes@10 | 217 | }
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nkeynes@10 | 218 |
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nkeynes@10 | 219 | void sh4_write_long( uint32_t addr, uint32_t val )
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nkeynes@10 | 220 | {
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nkeynes@10 | 221 | char *page;
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nkeynes@10 | 222 |
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nkeynes@10 | 223 | CHECK_WRITE_WATCH(addr,4,val);
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nkeynes@10 | 224 |
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nkeynes@83 | 225 | if( addr >= 0xE0000000 ) {
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nkeynes@10 | 226 | sh4_write_p4( addr, val );
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nkeynes@10 | 227 | return;
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nkeynes@10 | 228 | }
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nkeynes@130 | 229 | if( (addr&0x1F800000) == 0x04000000 ||
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nkeynes@130 | 230 | (addr&0x1F800000) == 0x11000000 ) {
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nkeynes@150 | 231 | texcache_invalidate_page(addr& 0x7FFFFF);
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nkeynes@10 | 232 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 233 | }
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nkeynes@10 | 234 |
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nkeynes@10 | 235 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 236 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 237 | sh4_stop();
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nkeynes@10 | 238 | return;
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nkeynes@10 | 239 | }
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nkeynes@10 | 240 | if( (addr&0x1FFFFFFF) < 0x200000 ) {
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nkeynes@10 | 241 | ERROR( "Attempted write to read-only memory: %08X => %08X", val, addr);
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nkeynes@10 | 242 | sh4_stop();
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nkeynes@10 | 243 | return;
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nkeynes@10 | 244 | }
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nkeynes@137 | 245 | if( (addr&0x1F800000) == 0x00800000 )
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nkeynes@137 | 246 | asic_g2_write_word();
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nkeynes@137 | 247 |
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nkeynes@10 | 248 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 249 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 250 | if( page == NULL ) {
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nkeynes@137 | 251 | if( (addr & 0x1F000000) >= 0x04000000 &&
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nkeynes@137 | 252 | (addr & 0x1F000000) < 0x07000000 )
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nkeynes@137 | 253 | return;
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nkeynes@10 | 254 | ERROR( "Long write to missing page: %08X => %08X", val, addr );
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nkeynes@10 | 255 | return;
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nkeynes@10 | 256 | }
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nkeynes@10 | 257 | TRACE_IO( "Long write %08X => %08X", page, (addr&0xFFF), val, addr );
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nkeynes@10 | 258 | io_rgn[(uint32_t)page]->io_write(addr&0xFFF, val);
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nkeynes@10 | 259 | } else {
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nkeynes@10 | 260 | *(uint32_t *)(page+(addr&0xFFF)) = val;
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nkeynes@10 | 261 | }
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nkeynes@10 | 262 | }
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nkeynes@10 | 263 |
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nkeynes@10 | 264 | void sh4_write_word( uint32_t addr, uint32_t val )
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nkeynes@10 | 265 | {
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nkeynes@10 | 266 | char *page;
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nkeynes@10 | 267 |
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nkeynes@10 | 268 | CHECK_WRITE_WATCH(addr,2,val);
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nkeynes@10 | 269 |
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nkeynes@83 | 270 | if( addr >= 0xE0000000 ) {
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nkeynes@10 | 271 | sh4_write_p4( addr, (int16_t)val );
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nkeynes@10 | 272 | return;
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nkeynes@10 | 273 | }
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nkeynes@130 | 274 | if( (addr&0x1F800000) == 0x04000000 ||
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nkeynes@130 | 275 | (addr&0x1F800000) == 0x11000000 ) {
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nkeynes@150 | 276 | texcache_invalidate_page(addr& 0x7FFFFF);
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nkeynes@10 | 277 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 278 | }
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nkeynes@10 | 279 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 280 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 281 | sh4_stop();
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nkeynes@10 | 282 | return;
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nkeynes@10 | 283 | }
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nkeynes@10 | 284 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 285 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 286 | if( page == NULL ) {
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nkeynes@10 | 287 | ERROR( "Attempted word write to missing page: %08X", addr );
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nkeynes@10 | 288 | return;
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nkeynes@10 | 289 | }
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nkeynes@10 | 290 | TRACE_IO( "Word write %04X => %08X", page, (addr&0xFFF), val&0xFFFF, addr );
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nkeynes@10 | 291 | io_rgn[(uint32_t)page]->io_write(addr&0xFFF, val);
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nkeynes@10 | 292 | } else {
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nkeynes@10 | 293 | *(uint16_t *)(page+(addr&0xFFF)) = val;
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nkeynes@10 | 294 | }
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nkeynes@10 | 295 | }
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nkeynes@10 | 296 |
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nkeynes@10 | 297 | void sh4_write_byte( uint32_t addr, uint32_t val )
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nkeynes@10 | 298 | {
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nkeynes@10 | 299 | char *page;
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nkeynes@10 | 300 |
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nkeynes@10 | 301 | CHECK_WRITE_WATCH(addr,1,val);
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nkeynes@10 | 302 |
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nkeynes@83 | 303 | if( addr >= 0xE0000000 ) {
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nkeynes@10 | 304 | sh4_write_p4( addr, (int8_t)val );
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nkeynes@10 | 305 | return;
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nkeynes@10 | 306 | }
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nkeynes@130 | 307 | if( (addr&0x1F800000) == 0x04000000 ||
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nkeynes@130 | 308 | (addr&0x1F800000) == 0x11000000 ) {
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nkeynes@150 | 309 | texcache_invalidate_page(addr& 0x7FFFFF);
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nkeynes@10 | 310 | addr = TRANSLATE_VIDEO_64BIT_ADDRESS(addr);
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nkeynes@10 | 311 | }
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nkeynes@10 | 312 |
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nkeynes@10 | 313 | if( IS_MMU_ENABLED() ) {
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nkeynes@10 | 314 | ERROR( "user-mode & mmu translation not implemented, aborting", NULL );
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nkeynes@10 | 315 | sh4_stop();
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nkeynes@10 | 316 | return;
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nkeynes@10 | 317 | }
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nkeynes@10 | 318 | page = page_map[ (addr & 0x1FFFFFFF) >> 12 ];
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nkeynes@10 | 319 | if( ((uint32_t)page) < MAX_IO_REGIONS ) { /* IO Region */
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nkeynes@10 | 320 | if( page == NULL ) {
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nkeynes@10 | 321 | ERROR( "Attempted byte write to missing page: %08X", addr );
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nkeynes@10 | 322 | return;
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nkeynes@10 | 323 | }
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nkeynes@10 | 324 | TRACE_IO( "Byte write %02X => %08X", page, (addr&0xFFF), val&0xFF, addr );
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nkeynes@10 | 325 | io_rgn[(uint32_t)page]->io_write( (addr&0xFFF), val);
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nkeynes@10 | 326 | } else {
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nkeynes@10 | 327 | *(uint8_t *)(page+(addr&0xFFF)) = val;
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nkeynes@10 | 328 | }
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nkeynes@10 | 329 | }
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nkeynes@10 | 330 |
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nkeynes@10 | 331 |
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nkeynes@10 | 332 |
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nkeynes@10 | 333 | /* FIXME: Handle all the many special cases when the range doesn't fall cleanly
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nkeynes@10 | 334 | * into the same memory black
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nkeynes@10 | 335 | */
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nkeynes@10 | 336 | void mem_copy_from_sh4( char *dest, uint32_t srcaddr, size_t count ) {
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nkeynes@103 | 337 | if( srcaddr >= 0x04000000 && srcaddr < 0x05000000 ) {
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nkeynes@103 | 338 | pvr2_vram64_read( dest, srcaddr, count );
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nkeynes@103 | 339 | } else {
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nkeynes@103 | 340 | char *src = mem_get_region(srcaddr);
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nkeynes@103 | 341 | if( src == NULL ) {
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nkeynes@103 | 342 | ERROR( "Attempted block read from unknown address %08X", srcaddr );
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nkeynes@103 | 343 | } else {
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nkeynes@103 | 344 | memcpy( dest, src, count );
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nkeynes@103 | 345 | }
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nkeynes@103 | 346 | }
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nkeynes@10 | 347 | }
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nkeynes@10 | 348 |
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nkeynes@10 | 349 | void mem_copy_to_sh4( uint32_t destaddr, char *src, size_t count ) {
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nkeynes@130 | 350 | if( destaddr >= 0x10000000 && destaddr < 0x11000000 ) {
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nkeynes@100 | 351 | pvr2_ta_write( src, count );
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nkeynes@130 | 352 | } else if( destaddr >= 0x04000000 && destaddr < 0x05000000 ||
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nkeynes@130 | 353 | destaddr >= 0x11000000 && destaddr < 0x12000000 ) {
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nkeynes@103 | 354 | pvr2_vram64_write( destaddr, src, count );
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nkeynes@90 | 355 | } else {
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nkeynes@90 | 356 | char *dest = mem_get_region(destaddr);
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nkeynes@90 | 357 | if( dest == NULL )
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nkeynes@103 | 358 | ERROR( "Attempted block write to unknown address %08X", destaddr );
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nkeynes@103 | 359 | else {
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nkeynes@90 | 360 | memcpy( dest, src, count );
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nkeynes@103 | 361 | }
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nkeynes@90 | 362 | }
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nkeynes@10 | 363 | }
|