nkeynes@1128 | 1 | /**
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nkeynes@1128 | 2 | * $Id$
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nkeynes@1128 | 3 | *
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nkeynes@1128 | 4 | * SH4 shadow execution core - runs xlat + emu together and checks that the
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nkeynes@1128 | 5 | * results are the same.
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nkeynes@1128 | 6 | *
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nkeynes@1128 | 7 | * Copyright (c) 2010 Nathan Keynes.
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nkeynes@1128 | 8 | *
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nkeynes@1128 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@1128 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@1128 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@1128 | 12 | * (at your option) any later version.
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nkeynes@1128 | 13 | *
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nkeynes@1128 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@1128 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@1128 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@1128 | 17 | * GNU General Public License for more details.
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nkeynes@1128 | 18 | */
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nkeynes@1128 | 19 |
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nkeynes@1128 | 20 | #include <stdlib.h>
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nkeynes@1128 | 21 | #include <string.h>
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nkeynes@1128 | 22 | #include <assert.h>
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nkeynes@1128 | 23 |
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nkeynes@1128 | 24 | #include "clock.h"
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nkeynes@1128 | 25 | #include "mem.h"
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nkeynes@1128 | 26 | #include "sh4/sh4.h"
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nkeynes@1128 | 27 | #include "sh4/sh4trans.h"
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nkeynes@1128 | 28 | #include "sh4/mmu.h"
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nkeynes@1128 | 29 |
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nkeynes@1128 | 30 | typedef enum {
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nkeynes@1128 | 31 | READ_LONG,
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nkeynes@1128 | 32 | WRITE_LONG,
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nkeynes@1128 | 33 | READ_WORD,
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nkeynes@1128 | 34 | WRITE_WORD,
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nkeynes@1128 | 35 | READ_BYTE,
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nkeynes@1128 | 36 | WRITE_BYTE,
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nkeynes@1128 | 37 | PREFETCH,
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nkeynes@1128 | 38 | READ_BYTE_FOR_WRITE
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nkeynes@1128 | 39 | } MemOp;
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nkeynes@1128 | 40 |
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nkeynes@1128 | 41 | char *memOpNames[] = { "read_long", "write_long", "read_word", "write_word",
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nkeynes@1128 | 42 | "read_byte", "write_byte", "prefetch", "read_byte_for_write" };
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nkeynes@1128 | 43 |
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nkeynes@1128 | 44 | struct mem_log_entry {
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nkeynes@1128 | 45 | MemOp op;
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nkeynes@1128 | 46 | sh4addr_t addr;
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nkeynes@1128 | 47 | uint32_t value;
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nkeynes@1128 | 48 | };
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nkeynes@1128 | 49 |
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nkeynes@1128 | 50 | static struct sh4_registers shadow_sh4r;
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nkeynes@1128 | 51 | static struct mem_region_fn **log_address_space;
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nkeynes@1128 | 52 | static struct mem_region_fn **check_address_space;
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nkeynes@1128 | 53 | static struct mem_region_fn **real_address_space;
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nkeynes@1128 | 54 |
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nkeynes@1128 | 55 | #define MEM_LOG_SIZE 4096
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nkeynes@1128 | 56 | static struct mem_log_entry *mem_log;
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nkeynes@1128 | 57 | static uint32_t mem_log_posn, mem_log_size;
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nkeynes@1128 | 58 | static uint32_t mem_check_posn;
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nkeynes@1128 | 59 |
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nkeynes@1128 | 60 | #define IS_STORE_QUEUE(X) (((X)&0xFC000000) == 0xE0000000)
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nkeynes@1128 | 61 |
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nkeynes@1128 | 62 | static void log_mem_op( MemOp op, sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 63 | {
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nkeynes@1128 | 64 | if( mem_log_posn == mem_log_size ) {
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nkeynes@1128 | 65 | struct mem_log_entry *tmp = realloc(mem_log, mem_log_size * sizeof(struct mem_log_entry) * 2);
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nkeynes@1128 | 66 | assert( tmp != NULL );
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nkeynes@1128 | 67 | mem_log_size *= 2;
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nkeynes@1128 | 68 | mem_log = tmp;
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nkeynes@1128 | 69 | }
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nkeynes@1128 | 70 | mem_log[mem_log_posn].op = op;
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nkeynes@1128 | 71 | mem_log[mem_log_posn].addr = addr;
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nkeynes@1128 | 72 | mem_log[mem_log_posn].value = value;
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nkeynes@1128 | 73 | mem_log_posn++;
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nkeynes@1128 | 74 | }
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nkeynes@1128 | 75 |
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nkeynes@1128 | 76 | static void print_mem_op( FILE *f, MemOp op, sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 77 | {
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nkeynes@1128 | 78 | if( op == WRITE_LONG || op == WRITE_WORD || op == WRITE_BYTE ) {
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nkeynes@1128 | 79 | fprintf( f, "%s( %08X, %08X )\n", memOpNames[op], addr, value );
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nkeynes@1128 | 80 | } else {
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nkeynes@1128 | 81 | fprintf( f, "%s( %08X )\n", memOpNames[op], addr );
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nkeynes@1128 | 82 | }
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nkeynes@1128 | 83 | }
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nkeynes@1128 | 84 |
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nkeynes@1128 | 85 | static void dump_mem_ops()
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nkeynes@1128 | 86 | {
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nkeynes@1128 | 87 | for( unsigned i=0; i<mem_log_posn; i++ ) {
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nkeynes@1128 | 88 | print_mem_op( stderr, mem_log[i].op, mem_log[i].addr, mem_log[i].value );
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nkeynes@1128 | 89 | }
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nkeynes@1128 | 90 | }
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nkeynes@1128 | 91 |
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nkeynes@1128 | 92 | static int32_t check_mem_op( MemOp op, sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 93 | {
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nkeynes@1128 | 94 | if( mem_check_posn >= mem_log_posn ) {
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nkeynes@1128 | 95 | fprintf( stderr, "Unexpected interpreter memory operation: " );
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nkeynes@1128 | 96 | print_mem_op(stderr, op, addr, value );
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nkeynes@1128 | 97 | abort();
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nkeynes@1128 | 98 | }
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nkeynes@1128 | 99 | if( mem_log[mem_check_posn].op != op ||
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nkeynes@1128 | 100 | mem_log[mem_check_posn].addr != addr ||
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nkeynes@1128 | 101 | (( op == WRITE_LONG || op == WRITE_WORD || op == WRITE_BYTE ) &&
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nkeynes@1128 | 102 | mem_log[mem_check_posn].value != value ) ) {
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nkeynes@1128 | 103 | fprintf(stderr, "Memory operation mismatch. Translator: " );
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nkeynes@1128 | 104 | print_mem_op(stderr, mem_log[mem_check_posn].op,
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nkeynes@1128 | 105 | mem_log[mem_check_posn].addr, mem_log[mem_check_posn].value );
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nkeynes@1128 | 106 | fprintf(stderr, "Emulator: ");
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nkeynes@1128 | 107 | print_mem_op(stderr, op, addr, value );
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nkeynes@1128 | 108 | abort();
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nkeynes@1128 | 109 | }
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nkeynes@1128 | 110 | return mem_log[mem_check_posn++].value;
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nkeynes@1128 | 111 | }
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nkeynes@1128 | 112 |
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nkeynes@1128 | 113 | #define CHECK_REG(sym, name) if( xsh4r->sym != esh4r->sym ) { \
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nkeynes@1128 | 114 | isgood = FALSE; fprintf( stderr, name " Xlt = %08X, Emu = %08X\n", xsh4r->sym, esh4r->sym ); }
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nkeynes@1128 | 115 |
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nkeynes@1128 | 116 | static gboolean check_registers( struct sh4_registers *xsh4r, struct sh4_registers *esh4r )
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nkeynes@1128 | 117 | {
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nkeynes@1128 | 118 | gboolean isgood = TRUE;
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nkeynes@1128 | 119 | for( unsigned i=0; i<16; i++ ) {
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nkeynes@1128 | 120 | if( xsh4r->r[i] != esh4r->r[i] ) {
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nkeynes@1128 | 121 | isgood = FALSE;
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nkeynes@1128 | 122 | fprintf( stderr, "R%d Xlt = %08X, Emu = %08X\n", i, xsh4r->r[i], esh4r->r[i] );
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nkeynes@1128 | 123 | }
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nkeynes@1128 | 124 | }
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nkeynes@1128 | 125 | for( unsigned i=0; i<8; i++ ) {
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nkeynes@1128 | 126 | if( xsh4r->r_bank[i] != esh4r->r_bank[i] ) {
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nkeynes@1128 | 127 | isgood = FALSE;
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nkeynes@1128 | 128 | fprintf( stderr, "R_BANK%d Xlt = %08X, Emu = %08X\n", i, xsh4r->r_bank[i], esh4r->r_bank[i] );
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nkeynes@1128 | 129 | }
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nkeynes@1128 | 130 | }
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nkeynes@1128 | 131 | for( unsigned i=0; i<16; i++ ) {
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nkeynes@1128 | 132 | if( xsh4r->fr[0][i] != esh4r->fr[0][i] ) {
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nkeynes@1128 | 133 | isgood = FALSE;
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nkeynes@1128 | 134 | fprintf( stderr, "FR%d Xlt = %f, Emu = %f\n", i, xsh4r->fr[0][i], esh4r->fr[0][i] );
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nkeynes@1128 | 135 | }
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nkeynes@1128 | 136 | }
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nkeynes@1128 | 137 | for( unsigned i=0; i<16; i++ ) {
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nkeynes@1128 | 138 | if( xsh4r->fr[1][i] != esh4r->fr[1][i] ) {
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nkeynes@1128 | 139 | isgood = FALSE;
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nkeynes@1128 | 140 | fprintf( stderr, "XF%d Xlt = %f, Emu = %f\n", i, xsh4r->fr[1][i], esh4r->fr[1][i] );
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nkeynes@1128 | 141 | }
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nkeynes@1128 | 142 | }
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nkeynes@1128 | 143 |
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nkeynes@1128 | 144 | CHECK_REG(t, "T");
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nkeynes@1128 | 145 | CHECK_REG(m, "M");
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nkeynes@1128 | 146 | CHECK_REG(s, "S");
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nkeynes@1128 | 147 | CHECK_REG(q, "Q");
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nkeynes@1128 | 148 | CHECK_REG(pc, "PC");
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nkeynes@1128 | 149 | CHECK_REG(pr, "PR");
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nkeynes@1128 | 150 | CHECK_REG(sr, "SR");
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nkeynes@1128 | 151 | CHECK_REG(fpscr, "FPSCR");
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nkeynes@1128 | 152 | CHECK_REG(fpul.i, "FPUL");
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nkeynes@1128 | 153 | if( xsh4r->mac != esh4r->mac ) {
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nkeynes@1128 | 154 | isgood = FALSE;
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nkeynes@1128 | 155 | fprintf( stderr, "MAC Xlt = %016llX, Emu = %016llX\n", xsh4r->mac, esh4r->mac );
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nkeynes@1128 | 156 | }
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nkeynes@1128 | 157 | CHECK_REG(gbr, "GBR");
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nkeynes@1128 | 158 | CHECK_REG(ssr, "SSR");
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nkeynes@1128 | 159 | CHECK_REG(spc, "SPC");
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nkeynes@1128 | 160 | CHECK_REG(sgr, "SGR");
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nkeynes@1128 | 161 | CHECK_REG(dbr, "DBR");
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nkeynes@1128 | 162 | CHECK_REG(vbr, "VBR");
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nkeynes@1128 | 163 | CHECK_REG(sh4_state, "STATE");
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nkeynes@1128 | 164 | if( memcmp( xsh4r->store_queue, esh4r->store_queue, sizeof(xsh4r->store_queue) ) != 0 ) {
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nkeynes@1128 | 165 | isgood = FALSE;
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nkeynes@1128 | 166 | fprintf( stderr, "Store queue Xlt =\n" );
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nkeynes@1128 | 167 | fwrite_dump( xsh4r->store_queue, sizeof(xsh4r->store_queue), stderr );
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nkeynes@1128 | 168 | fprintf( stderr, " Emu =\n" );
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nkeynes@1128 | 169 | fwrite_dump( esh4r->store_queue, sizeof(esh4r->store_queue), stderr );
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nkeynes@1128 | 170 | }
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nkeynes@1128 | 171 | return isgood;
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nkeynes@1128 | 172 | }
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nkeynes@1128 | 173 |
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nkeynes@1128 | 174 | static FASTCALL int32_t log_read_long( sh4addr_t addr )
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nkeynes@1128 | 175 | {
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nkeynes@1128 | 176 | int32_t rv = real_address_space[addr>>12]->read_long(addr);
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nkeynes@1128 | 177 | log_mem_op( READ_LONG, addr, rv );
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nkeynes@1128 | 178 | return rv;
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nkeynes@1128 | 179 | }
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nkeynes@1128 | 180 |
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nkeynes@1128 | 181 | static FASTCALL int32_t log_read_word( sh4addr_t addr )
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nkeynes@1128 | 182 | {
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nkeynes@1128 | 183 | int32_t rv = real_address_space[addr>>12]->read_word(addr);
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nkeynes@1128 | 184 | log_mem_op( READ_WORD, addr, rv );
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nkeynes@1128 | 185 | return rv;
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nkeynes@1128 | 186 | }
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nkeynes@1128 | 187 |
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nkeynes@1128 | 188 | static FASTCALL int32_t log_read_byte( sh4addr_t addr )
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nkeynes@1128 | 189 | {
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nkeynes@1128 | 190 | int32_t rv = real_address_space[addr>>12]->read_byte(addr);
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nkeynes@1128 | 191 | log_mem_op( READ_BYTE, addr, rv );
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nkeynes@1128 | 192 | return rv;
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nkeynes@1128 | 193 | }
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nkeynes@1128 | 194 |
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nkeynes@1128 | 195 | static FASTCALL int32_t log_read_byte_for_write( sh4addr_t addr )
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nkeynes@1128 | 196 | {
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nkeynes@1128 | 197 | int32_t rv = real_address_space[addr>>12]->read_byte_for_write(addr);
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nkeynes@1128 | 198 | log_mem_op( READ_BYTE_FOR_WRITE, addr, rv );
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nkeynes@1128 | 199 | return rv;
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nkeynes@1128 | 200 | }
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nkeynes@1128 | 201 |
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nkeynes@1128 | 202 | static FASTCALL void log_write_long( sh4addr_t addr, uint32_t val )
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nkeynes@1128 | 203 | {
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nkeynes@1128 | 204 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 205 | log_mem_op( WRITE_LONG, addr, val );
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nkeynes@1128 | 206 | real_address_space[addr>>12]->write_long(addr, val);
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nkeynes@1128 | 207 | }
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nkeynes@1128 | 208 |
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nkeynes@1128 | 209 | static FASTCALL void log_write_word( sh4addr_t addr, uint32_t val )
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nkeynes@1128 | 210 | {
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nkeynes@1128 | 211 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 212 | log_mem_op( WRITE_WORD, addr, val );
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nkeynes@1128 | 213 | real_address_space[addr>>12]->write_word(addr, val);
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nkeynes@1128 | 214 | }
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nkeynes@1128 | 215 |
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nkeynes@1128 | 216 | static FASTCALL void log_write_byte( sh4addr_t addr, uint32_t val )
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nkeynes@1128 | 217 | {
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nkeynes@1128 | 218 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 219 | log_mem_op( WRITE_BYTE, addr, val );
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nkeynes@1128 | 220 | real_address_space[addr>>12]->write_byte(addr, val);
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nkeynes@1128 | 221 | }
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nkeynes@1128 | 222 |
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nkeynes@1128 | 223 | static FASTCALL void log_prefetch( sh4addr_t addr )
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nkeynes@1128 | 224 | {
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nkeynes@1128 | 225 | log_mem_op( PREFETCH, addr, 0 );
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nkeynes@1128 | 226 | real_address_space[addr>>12]->prefetch(addr);
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nkeynes@1128 | 227 | }
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nkeynes@1128 | 228 |
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nkeynes@1128 | 229 | static FASTCALL int32_t check_read_long( sh4addr_t addr )
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nkeynes@1128 | 230 | {
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nkeynes@1128 | 231 | return check_mem_op( READ_LONG, addr, 0 );
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nkeynes@1128 | 232 | }
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nkeynes@1128 | 233 |
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nkeynes@1128 | 234 | static FASTCALL int32_t check_read_word( sh4addr_t addr )
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nkeynes@1128 | 235 | {
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nkeynes@1128 | 236 | return check_mem_op( READ_WORD, addr, 0 );
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nkeynes@1128 | 237 | }
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nkeynes@1128 | 238 |
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nkeynes@1128 | 239 | static FASTCALL int32_t check_read_byte( sh4addr_t addr )
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nkeynes@1128 | 240 | {
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nkeynes@1128 | 241 | return check_mem_op( READ_BYTE, addr, 0 );
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nkeynes@1128 | 242 | }
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nkeynes@1128 | 243 |
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nkeynes@1128 | 244 | static FASTCALL int32_t check_read_byte_for_write( sh4addr_t addr )
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nkeynes@1128 | 245 | {
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nkeynes@1128 | 246 | return check_mem_op( READ_BYTE_FOR_WRITE, addr, 0 );
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nkeynes@1128 | 247 | }
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nkeynes@1128 | 248 |
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nkeynes@1128 | 249 | static FASTCALL void check_write_long( sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 250 | {
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nkeynes@1128 | 251 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 252 | check_mem_op( WRITE_LONG, addr, value );
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nkeynes@1128 | 253 | }
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nkeynes@1128 | 254 |
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nkeynes@1128 | 255 | static FASTCALL void check_write_word( sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 256 | {
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nkeynes@1128 | 257 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 258 | check_mem_op( WRITE_WORD, addr, value );
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nkeynes@1128 | 259 | }
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nkeynes@1128 | 260 |
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nkeynes@1128 | 261 | static FASTCALL void check_write_byte( sh4addr_t addr, uint32_t value )
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nkeynes@1128 | 262 | {
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nkeynes@1128 | 263 | if( !IS_STORE_QUEUE(addr) )
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nkeynes@1128 | 264 | check_mem_op( WRITE_BYTE, addr, value );
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nkeynes@1128 | 265 | }
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nkeynes@1128 | 266 |
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nkeynes@1128 | 267 | static FASTCALL void check_prefetch( sh4addr_t addr )
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nkeynes@1128 | 268 | {
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nkeynes@1128 | 269 | check_mem_op( PREFETCH, addr, 0 );
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nkeynes@1128 | 270 | }
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nkeynes@1128 | 271 |
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nkeynes@1128 | 272 | struct mem_region_fn log_fns = { log_read_long, log_write_long,
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nkeynes@1128 | 273 | log_read_word, log_write_word,
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nkeynes@1128 | 274 | log_read_byte, log_write_byte,
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nkeynes@1128 | 275 | NULL, NULL, log_prefetch, log_read_byte_for_write };
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nkeynes@1128 | 276 |
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nkeynes@1128 | 277 | struct mem_region_fn check_fns = { check_read_long, check_write_long,
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nkeynes@1128 | 278 | check_read_word, check_write_word,
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nkeynes@1128 | 279 | check_read_byte, check_write_byte,
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nkeynes@1128 | 280 | NULL, NULL, check_prefetch, check_read_byte_for_write };
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nkeynes@1128 | 281 |
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nkeynes@1128 | 282 |
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nkeynes@1128 | 283 |
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nkeynes@1128 | 284 |
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nkeynes@1128 | 285 | void sh4_shadow_block_begin()
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nkeynes@1128 | 286 | {
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nkeynes@1128 | 287 | memcpy( &shadow_sh4r, &sh4r, sizeof(struct sh4_registers) );
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nkeynes@1128 | 288 | mem_log_posn = 0;
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nkeynes@1128 | 289 | }
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nkeynes@1128 | 290 |
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nkeynes@1128 | 291 | void sh4_shadow_block_end()
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nkeynes@1128 | 292 | {
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nkeynes@1128 | 293 | struct sh4_registers temp_sh4r;
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nkeynes@1128 | 294 |
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nkeynes@1128 | 295 | /* Save the end registers, and restore the state back to the start */
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nkeynes@1128 | 296 | memcpy( &temp_sh4r, &sh4r, sizeof(struct sh4_registers) );
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nkeynes@1128 | 297 | memcpy( &sh4r, &shadow_sh4r, sizeof(struct sh4_registers) );
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nkeynes@1128 | 298 |
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nkeynes@1128 | 299 | sh4_address_space = check_address_space;
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nkeynes@1128 | 300 | mem_check_posn = 0;
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nkeynes@1128 | 301 | sh4r.new_pc = sh4r.pc + 2;
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nkeynes@1128 | 302 | while( sh4r.slice_cycle < temp_sh4r.slice_cycle ) {
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nkeynes@1128 | 303 | sh4_execute_instruction();
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nkeynes@1128 | 304 | sh4r.slice_cycle += sh4_cpu_period;
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nkeynes@1128 | 305 | }
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nkeynes@1128 | 306 |
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nkeynes@1128 | 307 | if( !check_registers( &temp_sh4r, &sh4r ) ) {
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nkeynes@1128 | 308 | fprintf( stderr, "After executing block at %08X\n", shadow_sh4r.pc );
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nkeynes@1128 | 309 | abort();
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nkeynes@1128 | 310 | }
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nkeynes@1128 | 311 | if( mem_check_posn < mem_log_posn ) {
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nkeynes@1128 | 312 | fprintf( stderr, "Additional translator memory operations:\n" );
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nkeynes@1128 | 313 | while( mem_check_posn < mem_log_posn ) {
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nkeynes@1128 | 314 | print_mem_op( stderr, mem_log[mem_check_posn].op, mem_log[mem_check_posn].addr, mem_log[mem_check_posn].value );
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nkeynes@1128 | 315 | mem_check_posn++;
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nkeynes@1128 | 316 | }
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nkeynes@1128 | 317 | abort();
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nkeynes@1128 | 318 | }
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nkeynes@1128 | 319 | sh4_address_space = real_address_space;
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nkeynes@1128 | 320 | }
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nkeynes@1128 | 321 |
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nkeynes@1128 | 322 |
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nkeynes@1128 | 323 | void sh4_shadow_init()
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nkeynes@1128 | 324 | {
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nkeynes@1128 | 325 | real_address_space = sh4_address_space;
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nkeynes@1128 | 326 | log_address_space = mem_alloc_pages( sizeof(mem_region_fn_t) * 256 );
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nkeynes@1128 | 327 | check_address_space = mem_alloc_pages( sizeof(mem_region_fn_t) * 256 );
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nkeynes@1128 | 328 | for( unsigned i=0; i < (256 * 4096); i++ ) {
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nkeynes@1128 | 329 | log_address_space[i] = &log_fns;
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nkeynes@1128 | 330 | check_address_space[i] = &check_fns;
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nkeynes@1128 | 331 | }
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nkeynes@1128 | 332 |
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nkeynes@1128 | 333 | mem_log_size = MEM_LOG_SIZE;
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nkeynes@1128 | 334 | mem_log = malloc( mem_log_size * sizeof(struct mem_log_entry) );
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nkeynes@1128 | 335 | assert( mem_log != NULL );
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nkeynes@1128 | 336 |
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nkeynes@1128 | 337 | sh4_translate_set_callbacks( sh4_shadow_block_begin, sh4_shadow_block_end );
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nkeynes@1128 | 338 | sh4_translate_set_fastmem( FALSE );
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nkeynes@1128 | 339 | sh4_translate_set_address_space( log_address_space, log_address_space );
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nkeynes@1128 | 340 | }
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nkeynes@1128 | 341 |
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