Mercurial > repos > blastem
annotate jagdis.c @ 1388:af870e265226
Add device override for Fun n Games as it supports the mouse
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 02 Jun 2017 00:36:07 -0700 |
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rev | line source |
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
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5 */ |
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6 #include <stdio.h> |
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7 #include <stdlib.h> |
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8 #include <string.h> |
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9 #include <stdarg.h> |
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10 #include <ctype.h> |
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11 #include "tern.h" |
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12 #include "util.h" |
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13 #include "jagcpu.h" |
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14 |
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15 uint8_t visited[(16*1024*1024)/16]; |
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16 uint16_t label[(16*1024*1024)/8]; |
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17 |
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18 void fatal_error(char *format, ...) |
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19 { |
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20 va_list args; |
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21 va_start(args, format); |
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22 vfprintf(stderr, format, args); |
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23 va_end(args); |
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24 exit(1); |
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25 } |
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26 |
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27 |
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28 void visit(uint32_t address) |
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29 { |
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30 address &= 0xFFFFFF; |
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31 visited[address/16] |= 1 << ((address / 2) % 8); |
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32 } |
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33 |
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34 void reference(uint32_t address) |
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35 { |
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36 address &= 0xFFFFFF; |
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37 //printf("referenced: %X\n", address); |
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38 label[address/16] |= 1 << (address % 16); |
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39 } |
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40 |
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41 uint8_t is_visited(uint32_t address) |
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42 { |
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43 address &= 0xFFFFFF; |
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44 return visited[address/16] & (1 << ((address / 2) % 8)); |
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45 } |
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46 |
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47 uint16_t is_label(uint32_t address) |
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48 { |
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49 address &= 0xFFFFFF; |
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50 return label[address/16] & (1 << (address % 16)); |
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51 } |
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52 |
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53 typedef struct { |
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54 uint32_t num_labels; |
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55 uint32_t storage; |
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56 char *labels[]; |
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57 } label_names; |
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58 |
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59 tern_node * add_label(tern_node * head, char * name, uint32_t address) |
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60 { |
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61 char key[MAX_INT_KEY_SIZE]; |
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62 address &= 0xFFFFFF; |
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63 reference(address); |
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64 tern_int_key(address, key); |
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65 label_names * names = tern_find_ptr(head, key); |
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66 if (names) |
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67 { |
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68 if (names->num_labels == names->storage) |
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69 { |
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70 names->storage = names->storage + (names->storage >> 1); |
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71 names = realloc(names, sizeof(label_names) + names->storage * sizeof(char *)); |
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72 } |
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73 } else { |
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74 names = malloc(sizeof(label_names) + 4 * sizeof(char *)); |
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75 names->num_labels = 0; |
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76 names->storage = 4; |
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77 head = tern_insert_ptr(head, key, names); |
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78 } |
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79 names->labels[names->num_labels++] = strdup(name); |
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80 return head; |
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81 } |
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82 |
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83 typedef struct deferred { |
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84 uint32_t address; |
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85 struct deferred *next; |
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86 } deferred; |
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87 |
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88 deferred * defer(uint32_t address, deferred * next) |
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89 { |
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90 if (is_visited(address) || address & 1) { |
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91 return next; |
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92 } |
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93 //printf("deferring %X\n", address); |
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94 deferred * d = malloc(sizeof(deferred)); |
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95 d->address = address; |
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96 d->next = next; |
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97 return d; |
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98 } |
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99 |
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100 void check_reference(uint16_t inst, uint32_t address, uint8_t is_gpu) |
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101 { |
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102 if (jag_opcode(inst, is_gpu) == JAG_JR) { |
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103 reference(jag_jr_dest(inst, address)); |
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104 } |
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105 } |
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106 |
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107 char * strip_ws(char * text) |
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108 { |
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109 while (*text && (!isprint(*text) || isblank(*text))) |
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110 { |
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111 text++; |
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112 } |
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113 char * ret = text; |
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114 text = ret + strlen(ret) - 1; |
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115 while (text > ret && (!isprint(*text) || isblank(*text))) |
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116 { |
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117 *text = 0; |
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118 text--; |
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119 } |
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120 return ret; |
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121 } |
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122 |
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123 int main(int argc, char ** argv) |
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124 { |
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125 long filesize; |
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126 unsigned short *filebuf; |
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127 char disbuf[1024]; |
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128 unsigned short * cur; |
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129 deferred *def = NULL, *tmpd; |
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130 uint32_t start = 0xFFFFFFFF; |
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131 |
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132 uint8_t labels = 0, addr = 0, only = 0, vos = 0, reset = 0; |
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133 tern_node * named_labels = NULL; |
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134 |
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135 uint32_t address_off = 0xFFFFFFFF, address_end; |
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136 uint8_t is_gpu = 1; |
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137 for(uint8_t opt = 2; opt < argc; ++opt) { |
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138 if (argv[opt][0] == '-') { |
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139 FILE * address_log; |
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140 switch (argv[opt][1]) |
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141 { |
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142 case 'l': |
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143 labels = 1; |
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144 break; |
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145 case 'a': |
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146 addr = 1; |
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147 break; |
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148 case 'o': |
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149 only = 1; |
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150 break; |
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151 case 'r': |
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152 reset = 1; |
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153 break; |
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154 case 's': |
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155 opt++; |
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156 if (opt >= argc) { |
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157 fputs("-s must be followed by an offset\n", stderr); |
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158 exit(1); |
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159 } |
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160 address_off = strtol(argv[opt], NULL, 0); |
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161 break; |
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162 case 'p': |
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163 opt++; |
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164 if (opt >= argc) { |
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165 fputs("-p must be followed by a starting PC value\n", stderr); |
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166 exit(1); |
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167 } |
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168 start = strtol(argv[opt], NULL, 0); |
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169 break; |
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170 case 'd': |
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171 is_gpu = 0; |
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172 break; |
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173 case 'f': |
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174 opt++; |
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175 if (opt >= argc) { |
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176 fputs("-f must be followed by a filename\n", stderr); |
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177 exit(1); |
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178 } |
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179 address_log = fopen(argv[opt], "r"); |
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180 if (!address_log) { |
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181 fprintf(stderr, "Failed to open %s for reading\n", argv[opt]); |
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182 exit(1); |
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183 } |
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184 while (fgets(disbuf, sizeof(disbuf), address_log)) { |
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185 if (disbuf[0]) { |
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186 char *end; |
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187 uint32_t address = strtol(disbuf, &end, 16); |
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188 if (address) { |
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189 def = defer(address, def); |
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190 reference(address); |
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191 if (*end == '=') { |
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192 named_labels = add_label(named_labels, strip_ws(end+1), address); |
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193 } |
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194 } |
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195 } |
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196 } |
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197 } |
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198 } else { |
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199 char *end; |
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200 uint32_t address = strtol(argv[opt], &end, 16); |
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201 def = defer(address, def); |
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202 reference(address); |
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203 if (*end == '=') { |
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204 named_labels = add_label(named_labels, end+1, address); |
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205 } |
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206 } |
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207 } |
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208 if (address_off == 0xFFFFFFFF) { |
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209 address_off = is_gpu ? 0xF03000 : 0xF1B000; |
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210 } |
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211 if (start == 0xFFFFFFFF) { |
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212 start = address_off; |
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213 } |
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214 FILE * f = fopen(argv[1], "rb"); |
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215 fseek(f, 0, SEEK_END); |
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216 filesize = ftell(f); |
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217 fseek(f, 0, SEEK_SET); |
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218 |
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219 char int_key[MAX_INT_KEY_SIZE]; |
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220 address_end = address_off + filesize; |
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221 filebuf = malloc(filesize); |
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222 if (fread(filebuf, 2, filesize/2, f) != filesize/2) |
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223 { |
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224 fprintf(stderr, "Failure while reading file %s\n", argv[1]); |
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225 } |
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226 fclose(f); |
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227 for(cur = filebuf; cur - filebuf < (filesize/2); ++cur) |
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228 { |
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229 *cur = (*cur >> 8) | (*cur << 8); |
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230 } |
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231 named_labels = add_label(named_labels, "start", start); |
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232 if (!def || !only) { |
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233 def = defer(start, def); |
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234 } |
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235 |
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236 uint16_t *encoded, *next; |
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237 uint32_t size, tmp_addr; |
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238 uint32_t address; |
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239 while(def) { |
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240 do { |
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241 encoded = NULL; |
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242 address = def->address; |
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243 if (!is_visited(address)) { |
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244 encoded = filebuf + (address - address_off)/2; |
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245 } |
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246 tmpd = def; |
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247 def = def->next; |
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248 free(tmpd); |
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249 } while(def && encoded == NULL); |
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250 if (!encoded) { |
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251 break; |
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252 } |
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253 for(;;) { |
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254 if (address > address_end || address < address_off) { |
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255 break; |
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256 } |
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257 visit(address); |
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258 uint16_t inst = *encoded; |
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259 uint32_t inst_address = address; |
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260 check_reference(inst, address, is_gpu); |
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261 uint16_t opcode = jag_opcode(inst, is_gpu); |
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262 if (opcode == JAG_MOVEI) { |
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263 address += 6; |
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264 encoded += 3; |
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265 } else { |
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266 address += 2; |
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267 encoded++; |
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268 } |
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269 |
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270 |
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271 if (opcode == JAG_JR || opcode == JAG_JUMP) { |
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272 if (!(jag_reg2(inst) & 0xF)) { |
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273 //unconditional jump |
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274 if (opcode == JAG_JR) { |
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275 address = jag_jr_dest(inst, inst_address); |
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276 reference(address); |
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277 if (is_visited(address)) { |
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278 break; |
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279 } |
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280 } else { |
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281 break; |
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282 } |
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283 } else if (opcode == JAG_JR) { |
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284 uint32_t dest = jag_jr_dest(inst, inst_address); |
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285 reference(dest); |
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286 def = defer(dest, def); |
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287 } |
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288 } |
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289 } |
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290 } |
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291 if (labels) { |
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292 for (address = 0; address < address_off; address++) { |
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293 if (is_label(address)) { |
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294 printf("ADR_%X equ $%X\n", address, address); |
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295 } |
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296 } |
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297 for (address = filesize; address < (16*1024*1024); address++) { |
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298 char key[MAX_INT_KEY_SIZE]; |
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299 tern_int_key(address, key); |
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300 label_names *names = tern_find_ptr(named_labels, key); |
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301 if (names) { |
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302 for (int i = 0; i < names->num_labels; i++) |
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303 { |
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304 printf("%s equ $%X\n", names->labels[i], address); |
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305 } |
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306 } else if (is_label(address)) { |
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307 printf("ADR_%X equ $%X\n", address, address); |
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308 } |
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309 } |
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310 puts(""); |
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311 } |
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312 for (address = address_off; address < address_end; address+=2) { |
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313 if (is_visited(address)) { |
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314 encoded = filebuf + (address-address_off)/2; |
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315 jag_cpu_disasm(&encoded, address, disbuf, is_gpu, labels); |
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316 if (labels) { |
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317 char keybuf[MAX_INT_KEY_SIZE]; |
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318 label_names * names = tern_find_ptr(named_labels, tern_int_key(address, keybuf)); |
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319 if (names) |
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320 { |
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321 for (int i = 0; i < names->num_labels; i++) |
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322 { |
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323 printf("%s:\n", names->labels[i]); |
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324 } |
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325 } else if (is_label(address)) { |
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326 printf("ADR_%X:\n", address); |
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327 } |
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328 if (addr) { |
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329 printf("\t%s\t;%X\n", disbuf, address); |
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330 } else { |
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331 printf("\t%s\n", disbuf); |
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332 } |
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333 } else { |
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334 printf("%X: %s\n", address, disbuf); |
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335 } |
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336 } |
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337 } |
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338 return 0; |
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339 } |