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408
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1 /*
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2 main.c
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #include <config.h>
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23
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24 #include <argp.h>
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27
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28 #include <lw_alloc.h>
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29 #include <lw_string.h>
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30
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31 #include "lwdisasm.h"
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32
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33 /* command line option handling */
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34 const char *argp_program_version = "lwdisasmasm from " PACKAGE_STRING;
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35 const char *argp_program_bug_address = PACKAGE_BUGREPORT;
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36 char *program_name;
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37
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38 static struct argp_option options[] =
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39 {
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40 { "output", 'o', "FILE", 0, "Output to FILE"},
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41 { "debug", 'd', "LEVEL", OPTION_ARG_OPTIONAL, "Set debug mode"},
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42 { "format", 'f', "TYPE", 0, "Select input format: decb, raw, obj, os9"},
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43 { "decb", 'b', 0, 0, "Read DECB .bin format input, equivalent of --format=decb"},
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44 { "raw", 'r', 0, 0, "Read raw binary format input, equivalent of --format=raw"},
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45 { "obj", 0x100, 0, 0, "Read proprietary object file format, equivalent of --format=obj" },
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46 { "6809", '9', 0, 0, "Set disassembler to 6809 only mode" },
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47 { "6309", '3', 0, 0, "Set disassembler to 6309 mode (default)" },
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48 { "data", 0x101, "RANGE", 0, "Set an address range as data" },
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49 { "code", 0x102, "RANGE", 0, "Set an address range as code" },
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50 { "entry", 0x103, "ADDR", 0, "Start disassembling at ADDR" },
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51 { "base", 0x104, "ADDR", 0, "Set the base address of a raw file" },
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52 { 0 }
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53 };
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54
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55
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56 static error_t parse_opts(int key, char *arg, struct argp_state *state)
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57 {
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58 disasmstate_t *as = state -> input;
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59 int rangelow, rangehigh;
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60 char *e;
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61
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62 switch (key)
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63 {
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64
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65 case 0x101: // data range
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66 rangelow = strtol(arg, &e, 0);
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67 if (*e != ':')
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68 {
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69 fprintf(stderr, "Invalid range: %s\n", arg);
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70 exit(1);
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71 }
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72 rangehigh = strtol(e + 1, NULL, 0);
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73 if (rangelow < 0 || rangehigh < 0 || rangehigh < rangelow)
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74 {
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75 fprintf(stderr, "Invalid range: %s\n", arg);
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76 exit(1);
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77 }
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78 // register the range as data
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79 break;
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80
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81 case 0x102: // code range
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82 rangelow = strtol(arg, &e, 0);
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83 if (*e != ':')
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84 {
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85 fprintf(stderr, "Invalid range: %s\n", arg);
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86 exit(1);
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87 }
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88 rangehigh = strtol(e + 1, NULL, 0);
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89 if (rangelow < 0 || rangehigh < 0 || rangehigh < rangelow)
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90 {
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91 fprintf(stderr, "Invalid range: %s\n", arg);
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92 exit(1);
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93 }
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94 // register the range as code
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95 break;
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96
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97 case 0x103: // entry
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98 as -> entry = strtol(arg, NULL, 0);
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99 break;
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100
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101 case 0x104: // base
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102 as -> base = strtol(arg, NULL, 0);
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103 break;
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104
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105 case 'o':
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106 if (as -> output_file)
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107 lw_free(as -> output_file);
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108 as -> output_file = lw_strdup(arg);
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109 break;
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110
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111 case 'd':
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112 if (!arg)
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113 as -> debug_level = 50;
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114 else
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115 as -> debug_level = atoi(arg);
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116 break;
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117
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118 case 'b':
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119 as -> input_type = INPUT_DECB;
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120 break;
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121
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122 case 'r':
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123 as -> input_type = INPUT_RAW;
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124 break;
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125
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126 case 0x100:
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127 as -> input_type = INPUT_OBJ;
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128 break;
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129
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130 case 'f':
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131 if (!strcasecmp(arg, "decb"))
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132 as -> input_type = INPUT_DECB;
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133 else if (!strcasecmp(arg, "raw"))
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134 as -> input_type = INPUT_RAW;
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135 else if (!strcasecmp(arg, "obj"))
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136 as -> input_type = INPUT_OBJ;
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137 else if (!strcasecmp(arg, "os9"))
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138 as -> input_type = INPUT_OS9;
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139 else
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140 {
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141 fprintf(stderr, "Invalid input format: %s\n", arg);
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142 exit(1);
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143 }
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144 break;
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145
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146 case '9':
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147 as -> target = TARGET_6809;
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148 break;
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149
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150 case '3':
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151 as -> target = TARGET_6309;
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152 break;
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153
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154 case ARGP_KEY_END:
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155 break;
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156
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157 case ARGP_KEY_ARG:
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158 if (as -> input_file)
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159 {
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160 fprintf(stderr, "Only one input file allowed\n");
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161 exit(1);
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162 }
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163 as -> input_file = lw_strdup(arg);
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164 break;
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165
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166 default:
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167 return ARGP_ERR_UNKNOWN;
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168 }
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169 return 0;
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170 }
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171
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172 static struct argp argp =
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173 {
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174 options,
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175 parse_opts,
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176 "<input file>",
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177 "LWDISASM, a HD6309 and MC6809 disassembler"
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178 };
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179
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180 /*
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181 main function; parse command line, set up disassembler state, and run the
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182 disassembler on the first file
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183 */
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184
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185 int main(int argc, char **argv)
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186 {
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187 disasmstate_t as = { 0 };
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188 FILE *fp;
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189
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190 /* assembler state */
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191 program_name = argv[0];
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192
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193 /* parse command line arguments */
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194 argp_parse(&argp, argc, argv, 0, 0, &as);
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195
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196 if (as.input_file == NULL)
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197 {
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198 fprintf(stderr, "No input files specified.\n");
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199 exit(1);
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200 }
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201
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202 fp = fopen(as.input_file, "rb");
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203 if (!fp)
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204 {
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205 perror("Cannot open input file");
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206 exit(1);
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207 }
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208
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209 fseek(fp, 0, SEEK_END);
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210 as.filelen = ftell(fp);
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211 rewind(fp);
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212
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213 as.filedata = lw_alloc(as.filelen);
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214 0 == fread(as.filedata, as.filelen, 1, fp);
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215
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216 fclose(fp);
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217
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218 exit(0);
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219 }
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