Wolfgang Schwotzer | 22b4d0e | 2017-10-21 15:44:36 +0200 | [diff] [blame^] | 1 | /* Capstone Disassembler Engine */ |
| 2 | /* M680X Backend by Wolfgang Schwotzer <wolfgang.schwotzer@gmx.net> 2017 */ |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | #include <string.h> |
| 6 | |
| 7 | #include <capstone/platform.h> |
| 8 | #include <capstone/capstone.h> |
| 9 | |
| 10 | #define ARR_SIZE(a) (sizeof(a)/sizeof(a[0])) |
| 11 | |
| 12 | #define WITH_DETAILS |
| 13 | |
| 14 | struct platform { |
| 15 | cs_arch arch; |
| 16 | cs_mode mode; |
| 17 | unsigned char *code; |
| 18 | size_t size; |
| 19 | char *comment; |
| 20 | }; |
| 21 | |
| 22 | static void print_string_hex(char *comment, unsigned char *str, size_t len) |
| 23 | { |
| 24 | unsigned char *c; |
| 25 | |
| 26 | printf("%s", comment); |
| 27 | |
| 28 | for (c = str; c < str + len; c++) |
| 29 | printf("0x%02X ", *c & 0xff); |
| 30 | |
| 31 | printf("\n"); |
| 32 | } |
| 33 | |
| 34 | static void print_string_hex_short(unsigned char *str, size_t len) |
| 35 | { |
| 36 | unsigned char *c; |
| 37 | |
| 38 | for (c = str; c < str + len; c++) |
| 39 | printf("%02X", *c & 0xff); |
| 40 | } |
| 41 | |
| 42 | static const char *s_access[] = { |
| 43 | "UNCHANGED", "READ", "WRITE", "READ | WRITE", |
| 44 | }; |
| 45 | |
| 46 | static void print_read_write_regs(csh handle, cs_detail *detail) |
| 47 | { |
| 48 | int i; |
| 49 | |
| 50 | if (detail->regs_read_count > 0) { |
| 51 | printf("\tRegisters read:"); |
| 52 | |
| 53 | for (i = 0; i < detail->regs_read_count; ++i) |
| 54 | printf(" %s", |
| 55 | cs_reg_name(handle, detail->regs_read[i])); |
| 56 | |
| 57 | printf("\n"); |
| 58 | } |
| 59 | |
| 60 | if (detail->regs_write_count > 0) { |
| 61 | printf("\tRegisters modified:"); |
| 62 | |
| 63 | for (i = 0; i < detail->regs_write_count; ++i) |
| 64 | printf(" %s", |
| 65 | cs_reg_name(handle, detail->regs_write[i])); |
| 66 | |
| 67 | printf("\n"); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | static void print_insn_detail(csh handle, cs_insn *insn) |
| 72 | { |
| 73 | cs_detail *detail = insn->detail; |
| 74 | cs_m680x *m680x = NULL; |
| 75 | int i; |
| 76 | |
| 77 | // detail can be NULL on "data" instruction if SKIPDATA option is turned ON |
| 78 | if (detail == NULL) |
| 79 | return; |
| 80 | |
| 81 | m680x = &detail->m680x; |
| 82 | |
| 83 | if (m680x->op_count) |
| 84 | printf("\top_count: %u\n", m680x->op_count); |
| 85 | |
| 86 | for (i = 0; i < m680x->op_count; i++) { |
| 87 | cs_m680x_op *op = &(m680x->operands[i]); |
| 88 | char *comment; |
| 89 | |
| 90 | switch ((int)op->type) { |
| 91 | default: |
| 92 | break; |
| 93 | |
| 94 | case M680X_OP_REGISTER: |
| 95 | comment = ""; |
| 96 | |
| 97 | if ((i == 0 && (m680x->flags & |
| 98 | M680X_FIRST_OP_IN_MNEM)) || |
| 99 | ((i == 1 && (m680x->flags & |
| 100 | M680X_SECOND_OP_IN_MNEM)))) |
| 101 | comment = " (in mnemonic)"; |
| 102 | |
| 103 | printf("\t\toperands[%u].type: REGISTER = %s%s\n", i, |
| 104 | cs_reg_name(handle, op->reg), comment); |
| 105 | break; |
| 106 | |
| 107 | case M680X_OP_CONSTANT: |
| 108 | printf("\t\toperands[%u].type: CONSTANT = %u\n", i, |
| 109 | op->const_val); |
| 110 | break; |
| 111 | |
| 112 | case M680X_OP_IMMEDIATE: |
| 113 | printf("\t\toperands[%u].type: IMMEDIATE = #%d\n", i, |
| 114 | op->imm); |
| 115 | break; |
| 116 | |
| 117 | case M680X_OP_DIRECT: |
| 118 | printf("\t\toperands[%u].type: DIRECT = 0x%02X\n", i, |
| 119 | op->direct_addr); |
| 120 | break; |
| 121 | |
| 122 | case M680X_OP_EXTENDED: |
| 123 | printf("\t\toperands[%u].type: EXTENDED %s = 0x%04X\n", |
| 124 | i, op->ext.indirect ? "INDIRECT" : "", |
| 125 | op->ext.address); |
| 126 | break; |
| 127 | |
| 128 | case M680X_OP_RELATIVE: |
| 129 | printf("\t\toperands[%u].type: RELATIVE = 0x%04X\n", i, |
| 130 | op->rel.address); |
| 131 | break; |
| 132 | |
| 133 | case M680X_OP_INDEXED: |
| 134 | printf("\t\toperands[%u].type: INDEXED%s\n", i, |
| 135 | (op->idx.flags & M680X_IDX_INDIRECT) ? |
| 136 | " INDIRECT" : ""); |
| 137 | |
| 138 | if (op->idx.base_reg != M680X_REG_INVALID) |
| 139 | printf("\t\t\tbase register: %s\n", |
| 140 | cs_reg_name(handle, op->idx.base_reg)); |
| 141 | |
| 142 | if (op->idx.offset_reg != M680X_REG_INVALID) |
| 143 | printf("\t\t\toffset register: %s\n", |
| 144 | cs_reg_name(handle, op->idx.offset_reg)); |
| 145 | |
| 146 | if ((op->idx.offset_bits != 0) && |
| 147 | (op->idx.offset_reg == M680X_REG_INVALID) && |
| 148 | !op->idx.inc_dec) { |
| 149 | printf("\t\t\toffset: %d\n", op->idx.offset); |
| 150 | |
| 151 | if (op->idx.base_reg == M680X_REG_PC) |
| 152 | printf("\t\t\toffset address: 0x%X\n", |
| 153 | op->idx.offset_addr); |
| 154 | |
| 155 | printf("\t\t\toffset bits: %u\n", |
| 156 | op->idx.offset_bits); |
| 157 | } |
| 158 | |
| 159 | if (op->idx.inc_dec) { |
| 160 | char *post_pre = op->idx.flags & |
| 161 | M680X_IDX_POST_INC_DEC ? "post" : "pre"; |
| 162 | char *inc_dec = (op->idx.inc_dec > 0) ? |
| 163 | "increment" : "decrement"; |
| 164 | |
| 165 | printf("\t\t\t%s %s: %d\n", post_pre, inc_dec, |
| 166 | abs(op->idx.inc_dec)); |
| 167 | } |
| 168 | |
| 169 | break; |
| 170 | } |
| 171 | |
| 172 | if (op->size != 0) |
| 173 | printf("\t\t\tsize: %u\n", op->size); |
| 174 | |
| 175 | if (op->access != CS_AC_INVALID) |
| 176 | printf("\t\t\taccess: %s\n", s_access[op->access]); |
| 177 | |
| 178 | } |
| 179 | |
| 180 | print_read_write_regs(handle, detail); |
| 181 | |
| 182 | if (detail->groups_count) { |
| 183 | printf("\tgroups_count: %u\n", detail->groups_count); |
| 184 | } |
| 185 | |
| 186 | printf("\n"); |
| 187 | } |
| 188 | |
| 189 | static bool consistency_checks() |
| 190 | { |
| 191 | return true; |
| 192 | } |
| 193 | |
| 194 | static void test() |
| 195 | { |
| 196 | #define M6800_CODE \ |
| 197 | "\x01\x09\x36\x64\x7f\x74\x10\x00\x90\x10\xA4\x10\xb6\x10\x00\x39" |
| 198 | |
| 199 | #define M6801_CODE \ |
| 200 | "\x04\x05\x3c\x3d\x38\x93\x10\xec\x10\xed\x10\x39" |
| 201 | |
| 202 | #define M6805_CODE \ |
| 203 | "\x04\x7f\x00\x17\x22\x28\x00\x2e\x00\x40\x42\x5a\x70\x8e\x97\x9c" \ |
| 204 | "\xa0\x15\xad\x00\xc3\x10\x00\xda\x12\x34\xe5\x7f\xfe" |
| 205 | |
| 206 | #define M6808_CODE \ |
| 207 | "\x31\x22\x00\x35\x22\x45\x10\x00\x4b\x00\x51\x10\x52\x5e\x22\x62" \ |
| 208 | "\x65\x12\x34\x72\x84\x85\x86\x87\x8a\x8b\x8c\x94\x95\xa7\x10\xaf\x10" \ |
| 209 | "\x9e\x60\x7f\x9e\x6b\x7f\x00\x9e\xd6\x10\x00\x9e\xe6\x7f" |
| 210 | |
| 211 | #define HCS08_CODE \ |
| 212 | "\x32\x10\x00\x9e\xae\x9e\xce\x7f\x9e\xbe\x10\x00\x9e\xfe\x7f" \ |
| 213 | "\x3e\x10\x00\x9e\xf3\x7f\x96\x10\x00\x9e\xff\x7f\x82" |
| 214 | |
| 215 | #define M6811_CODE \ |
| 216 | "\x02\x03\x12\x7f\x10\x00\x13\x99\x08\x00\x14\x7f\x02\x15\x7f\x01" \ |
| 217 | "\x1e\x7f\x20\x00\x8f\xcf" \ |
| 218 | "\x18\x08\x18\x30\x18\x3c\x18\x67\x18\x8c\x10\x00\x18\x8f" \ |
| 219 | "\x18\xce\x10\x00\x18\xff\x10\x00" \ |
| 220 | "\x1a\xa3\x7f\x1a\xac\x1a\xee\x7f\x1a\xef\x7f\xcd\xac\x7f" |
| 221 | |
| 222 | #define CPU12_CODE \ |
| 223 | "\x00\x04\x01\x00\x0c\x00\x80\x0e\x00\x80\x00\x11\x1e\x10\x00\x80\x00" \ |
| 224 | "\x3b\x4a\x10\x00\x04\x4b\x01\x04\x4f\x7f\x80\x00\x8f\x10\x00\xb7\x52" \ |
| 225 | "\xb7\xb1\xa6\x67\xa6\xfe\xa6\xf7\x18\x02\xe2\x30\x39\xe2\x10\x00" \ |
| 226 | "\x18\x0c\x30\x39\x10\x00\x18\x11\x18\x12\x10\x00\x18\x19\x00\x18\x1e\x00" \ |
| 227 | "\x18\x3e\x18\x3f\x00" |
| 228 | |
| 229 | #define HD6301_CODE \ |
| 230 | "\x6b\x10\x00\x71\x10\x00\x72\x10\x10\x39" |
| 231 | |
| 232 | #define M6809_CODE \ |
| 233 | "\x06\x10\x19\x1a\x55\x1e\x01\x23\xe9\x31\x06\x34\x55\xa6\x81" \ |
| 234 | "\xa7\x89\x7f\xff\xa6\x9d\x10\x00\xa7\x91\xa6\x9f\x10\x00" \ |
| 235 | "\x11\xac\x99\x10\x00\x39" \ |
| 236 | \ |
| 237 | "\xA6\x07\xA6\x27\xA6\x47\xA6\x67\xA6\x0F\xA6\x10" \ |
| 238 | "\xA6\x80\xA6\x81\xA6\x82\xA6\x83\xA6\x84\xA6\x85\xA6\x86" \ |
| 239 | "\xA6\x88\x7F\xA6\x88\x80\xA6\x89\x7F\xFF\xA6\x89\x80\x00" \ |
| 240 | "\xA6\x8B\xA6\x8C\x10\xA6\x8D\x10\x00" \ |
| 241 | \ |
| 242 | "\xA6\x91\xA6\x93\xA6\x94\xA6\x95\xA6\x96" \ |
| 243 | "\xA6\x98\x7F\xA6\x98\x80\xA6\x99\x7F\xFF\xA6\x99\x80\x00" \ |
| 244 | "\xA6\x9B\xA6\x9C\x10\xA6\x9D\x10\x00\xA6\x9F\x10\x00" |
| 245 | |
| 246 | |
| 247 | #define HD6309_CODE \ |
| 248 | "\x01\x10\x10\x62\x10\x10\x7b\x10\x10\x00\xcd\x49\x96\x02\xd2" \ |
| 249 | "\x10\x30\x23\x10\x38\x10\x3b\x10\x53\x10\x5d" \ |
| 250 | "\x11\x30\x43\x10\x11\x37\x25\x10\x11\x38\x12\x11\x39\x23\x11\x3b\x34" \ |
| 251 | "\x11\x8e\x10\x00\x11\xaf\x10\x11\xab\x10\x11\xf6\x80\x00" |
| 252 | |
| 253 | struct platform platforms[] = { |
| 254 | { |
| 255 | CS_ARCH_M680X, |
| 256 | (cs_mode)(CS_MODE_M680X_6301), |
| 257 | (unsigned char *)HD6301_CODE, |
| 258 | sizeof(HD6301_CODE) - 1, |
| 259 | "M680X_HD6301", |
| 260 | }, |
| 261 | { |
| 262 | CS_ARCH_M680X, |
| 263 | (cs_mode)(CS_MODE_M680X_6309), |
| 264 | (unsigned char *)HD6309_CODE, |
| 265 | sizeof(HD6309_CODE) - 1, |
| 266 | "M680X_HD6309", |
| 267 | }, |
| 268 | { |
| 269 | CS_ARCH_M680X, |
| 270 | (cs_mode)(CS_MODE_M680X_6800), |
| 271 | (unsigned char *)M6800_CODE, |
| 272 | sizeof(M6800_CODE) - 1, |
| 273 | "M680X_M6800", |
| 274 | }, |
| 275 | { |
| 276 | CS_ARCH_M680X, |
| 277 | (cs_mode)(CS_MODE_M680X_6801), |
| 278 | (unsigned char *)M6801_CODE, |
| 279 | sizeof(M6801_CODE) - 1, |
| 280 | "M680X_M6801", |
| 281 | }, |
| 282 | { |
| 283 | CS_ARCH_M680X, |
| 284 | (cs_mode)(CS_MODE_M680X_6805), |
| 285 | (unsigned char *)M6805_CODE, |
| 286 | sizeof(M6805_CODE) - 1, |
| 287 | "M680X_M68HC05", |
| 288 | }, |
| 289 | { |
| 290 | CS_ARCH_M680X, |
| 291 | (cs_mode)(CS_MODE_M680X_6808), |
| 292 | (unsigned char *)M6808_CODE, |
| 293 | sizeof(M6808_CODE) - 1, |
| 294 | "M680X_M68HC08", |
| 295 | }, |
| 296 | { |
| 297 | CS_ARCH_M680X, |
| 298 | (cs_mode)(CS_MODE_M680X_6809), |
| 299 | (unsigned char *)M6809_CODE, |
| 300 | sizeof(M6809_CODE) - 1, |
| 301 | "M680X_M6809", |
| 302 | }, |
| 303 | { |
| 304 | CS_ARCH_M680X, |
| 305 | (cs_mode)(CS_MODE_M680X_6811), |
| 306 | (unsigned char *)M6811_CODE, |
| 307 | sizeof(M6811_CODE) - 1, |
| 308 | "M680X_M68HC11", |
| 309 | }, |
| 310 | { |
| 311 | CS_ARCH_M680X, |
| 312 | (cs_mode)(CS_MODE_M680X_CPU12), |
| 313 | (unsigned char *)CPU12_CODE, |
| 314 | sizeof(CPU12_CODE) - 1, |
| 315 | "M680X_CPU12", |
| 316 | }, |
| 317 | { |
| 318 | CS_ARCH_M680X, |
| 319 | (cs_mode)(CS_MODE_M680X_HCS08), |
| 320 | (unsigned char *)HCS08_CODE, |
| 321 | sizeof(HCS08_CODE) - 1, |
| 322 | "M680X_HCS08", |
| 323 | }, |
| 324 | }; |
| 325 | |
| 326 | uint64_t address = 0x1000; |
| 327 | csh handle; |
| 328 | cs_insn *insn; |
| 329 | int i; |
| 330 | size_t count; |
| 331 | char *nine_spaces = " "; |
| 332 | |
| 333 | if (!consistency_checks()) |
| 334 | abort(); |
| 335 | |
| 336 | for (i = 0; i < sizeof(platforms) / sizeof(platforms[0]); i++) { |
| 337 | cs_err err = cs_open(platforms[i].arch, platforms[i].mode, |
| 338 | &handle); |
| 339 | |
| 340 | if (err) { |
| 341 | printf("Failed on cs_open() with error returned: %u\n", |
| 342 | err); |
| 343 | abort(); |
| 344 | } |
| 345 | |
| 346 | #ifdef WITH_DETAILS |
| 347 | cs_option(handle, CS_OPT_DETAIL, CS_OPT_ON); |
| 348 | #endif |
| 349 | |
| 350 | count = cs_disasm(handle, platforms[i].code, platforms[i].size, |
| 351 | address, 0, &insn); |
| 352 | |
| 353 | if (count) { |
| 354 | size_t j; |
| 355 | |
| 356 | printf("********************\n"); |
| 357 | printf("Platform: %s\n", platforms[i].comment); |
| 358 | print_string_hex("Code: ", platforms[i].code, |
| 359 | platforms[i].size); |
| 360 | printf("Disasm:\n"); |
| 361 | |
| 362 | for (j = 0; j < count; j++) { |
| 363 | printf("0x%04X: ", (uint16_t)insn[j].address); |
| 364 | print_string_hex_short(insn[j].bytes, |
| 365 | insn[j].size); |
| 366 | printf("%.*s", 1 + ((5 - insn[j].size) * 2), |
| 367 | nine_spaces); |
| 368 | printf("%s", insn[j].mnemonic); |
| 369 | int slen = (int)strlen(insn[j].mnemonic); |
| 370 | printf("%.*s", 1 + (5 - slen), nine_spaces); |
| 371 | printf("%s\n", insn[j].op_str); |
| 372 | #ifdef WITH_DETAILS |
| 373 | print_insn_detail(handle, &insn[j]); |
| 374 | #endif |
| 375 | } |
| 376 | |
| 377 | // free memory allocated by cs_disasm() |
| 378 | cs_free(insn, count); |
| 379 | } |
| 380 | else { |
| 381 | printf("********************\n"); |
| 382 | printf("Platform: %s\n", platforms[i].comment); |
| 383 | print_string_hex("Code:", platforms[i].code, |
| 384 | platforms[i].size); |
| 385 | printf("ERROR: Failed to disasm given code!\n"); |
| 386 | abort(); |
| 387 | } |
| 388 | |
| 389 | cs_close(&handle); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | int main() |
| 394 | { |
| 395 | test(); |
| 396 | |
| 397 | return 0; |
| 398 | } |