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annotate zdis.c @ 217:acd29e2664c6

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Added testcases file. Some fixes to test generator for dealing with indexed mode with base and index reg the same. Added support for blastem headless mode in test runner.
author Mike Pavone <pavone@retrodev.com>
date Sat, 20 Apr 2013 00:29:14 -0700
parents 69585e7d474f
children 852b8765bba6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
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1 #include "z80inst.h"
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4
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5 uint8_t visited[(64*1024)/8];
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6 uint8_t label[(64*1024)/8];
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7
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8 void visit(uint16_t address)
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9 {
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10 visited[address/8] |= 1 << (address % 8);
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11 }
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12
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13 void reference(uint16_t address)
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14 {
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15 //printf("referenced: %X\n", address);
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16 label[address/8] |= 1 << (address % 8);
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17 }
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18
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19 uint8_t is_visited(uint16_t address)
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20 {
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21 return visited[address/8] & (1 << (address % 8));
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22 }
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23
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24 uint8_t is_label(uint16_t address)
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25 {
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26 return label[address/8] & (1 << (address % 8));
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27 }
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28
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29 typedef struct deferred {
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30 uint16_t address;
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31 struct deferred *next;
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32 } deferred;
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33
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34 deferred * defer(uint16_t address, deferred * next)
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35 {
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36 if (is_visited(address)) {
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37 return next;
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38 }
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39 //printf("deferring %X\n", address);
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40 deferred * d = malloc(sizeof(deferred));
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41 d->address = address;
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42 d->next = next;
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43 return d;
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44 }
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45
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46 uint8_t labels = 0;
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47 uint8_t addr = 0;
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48 uint8_t only = 0;
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49
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50 int main(int argc, char ** argv)
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51 {
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52 long filesize;
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53 uint8_t *filebuf;
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54 char disbuf[1024];
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55 z80inst instbuf;
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56 uint8_t * cur;
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57 FILE * f = fopen(argv[1], "rb");
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58 fseek(f, 0, SEEK_END);
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59 filesize = ftell(f);
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60 fseek(f, 0, SEEK_SET);
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61 filebuf = malloc(filesize);
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62 fread(filebuf, 1, filesize, f);
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63 fclose(f);
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64 deferred *def = NULL, *tmpd;
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65 for(uint8_t opt = 2; opt < argc; ++opt) {
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66 if (argv[opt][0] == '-') {
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67 FILE * address_log;
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68 switch (argv[opt][1])
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69 {
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70 case 'l':
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71 labels = 1;
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72 break;
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73 case 'a':
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74 addr = 1;
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75 break;
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76 case 'o':
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77 only = 1;
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78 break;
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79 case 'f':
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80 opt++;
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81 if (opt >= argc) {
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82 fputs("-f must be followed by a filename\n", stderr);
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83 exit(1);
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84 }
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85 address_log = fopen(argv[opt], "r");
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86 if (!address_log) {
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87 fprintf(stderr, "Failed to open %s for reading\n", argv[opt]);
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88 exit(1);
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89 }
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90 while (fgets(disbuf, sizeof(disbuf), address_log)) {
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91 if (disbuf[0]) {
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92 uint16_t address = strtol(disbuf, NULL, 16);
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93 if (address) {
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94 def = defer(address, def);
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95 reference(address);
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96 }
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97 }
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98 }
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99 }
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100 } else {
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101 uint16_t address = strtol(argv[opt], NULL, 16);
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102 def = defer(address, def);
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103 reference(address);
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104 }
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105 }
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106 uint16_t start = 0;
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107 uint8_t *encoded, *next;
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108 uint32_t size;
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109 if (!def || !only) {
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110 def = defer(start, def);
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111 }
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112 uint16_t address;
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113 while(def) {
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114 do {
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115 encoded = NULL;
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116 address = def->address;
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117 if (!is_visited(address)) {
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118 encoded = filebuf + address;
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119 }
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120 tmpd = def;
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121 def = def->next;
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122 free(tmpd);
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123 } while(def && encoded == NULL);
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124 if (!encoded) {
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125 break;
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126 }
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127 for(;;) {
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128 if (address > filesize) {
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129 break;
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130 }
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131 visit(address);
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132 next = z80_decode(encoded, &instbuf);
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133 address += (next-encoded);
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134 encoded = next;
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135
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136 //m68k_disasm(&instbuf, disbuf);
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137 //printf("%X: %s\n", instbuf.address, disbuf);
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138 if (instbuf.op == Z80_HALT || instbuf.op == Z80_RET || instbuf.op == Z80_RETI || instbuf.op == Z80_RETN || instbuf.op == Z80_RST) {
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139 break;
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140 }
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141 switch (instbuf.op)
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142 {
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143 case Z80_JR:
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144 address += instbuf.immed;
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145 encoded = filebuf + address;
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146 break;
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147 case Z80_JRCC:
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148 reference(address + instbuf.immed);
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149 def = defer(address + instbuf.immed, def);
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150 break;
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151 case Z80_JP:
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152 address = instbuf.immed;
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153 encoded = filebuf + address;
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154 break;
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155 case Z80_JPCC:
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156 case Z80_CALL:
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157 case Z80_CALLCC:
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158 reference(instbuf.immed);
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159 def = defer(instbuf.immed, def);
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160 break;
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parents:
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161 }
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162 }
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163 }
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164 if (labels) {
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165 for (address = filesize; address < (64*1024); address++) {
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166 if (is_label(address)) {
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167 printf("ADR_%X equ $%X\n", address, address);
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168 }
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169 }
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170 puts("");
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171 }
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
172 for (address = 0; address < filesize; address++) {
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
173 if (is_visited(address)) {
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parents:
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174 encoded = filebuf + address;
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parents:
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175 z80_decode(encoded, &instbuf);
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parents:
diff changeset
176 if (labels) {
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parents:
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177 /*m68k_disasm_labels(&instbuf, disbuf);
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parents:
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178 if (is_label(instbuf.address)) {
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179 printf("ADR_%X:\n", instbuf.address);
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180 }
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parents:
diff changeset
181 if (addr) {
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parents:
diff changeset
182 printf("\t%s\t;%X\n", disbuf, instbuf.address);
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183 } else {
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parents:
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184 printf("\t%s\n", disbuf);
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
185 }*/
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186 } else {
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parents:
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187 z80_disasm(&instbuf, disbuf);
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
188 printf("%X: %s\n", address, disbuf);
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parents:
diff changeset
189 }
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parents:
diff changeset
190 }
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parents:
diff changeset
191 }
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parents:
diff changeset
192 return 0;
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
193 }