1 /*- 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie the 24 * rights to redistribute these changes. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * Instruction disassembler. 32 */ 33 #include <sys/param.h> 34 #include <sys/kdb.h> 35 36 #include <ddb/ddb.h> 37 #include <ddb/db_access.h> 38 #include <ddb/db_sym.h> 39 40 /* 41 * Size attributes 42 */ 43 #define BYTE 0 44 #define WORD 1 45 #define LONG 2 46 #define QUAD 3 47 #define SNGL 4 48 #define DBLR 5 49 #define EXTR 6 50 #define SDEP 7 51 #define NONE 8 52 53 /* 54 * Addressing modes 55 */ 56 #define E 1 /* general effective address */ 57 #define Eind 2 /* indirect address (jump, call) */ 58 #define Ew 3 /* address, word size */ 59 #define Eb 4 /* address, byte size */ 60 #define R 5 /* register, in 'reg' field */ 61 #define Rw 6 /* word register, in 'reg' field */ 62 #define Ri 7 /* register in instruction */ 63 #define S 8 /* segment reg, in 'reg' field */ 64 #define Si 9 /* segment reg, in instruction */ 65 #define A 10 /* accumulator */ 66 #define BX 11 /* (bx) */ 67 #define CL 12 /* cl, for shifts */ 68 #define DX 13 /* dx, for IO */ 69 #define SI 14 /* si */ 70 #define DI 15 /* di */ 71 #define CR 16 /* control register */ 72 #define DR 17 /* debug register */ 73 #define TR 18 /* test register */ 74 #define I 19 /* immediate, unsigned */ 75 #define Is 20 /* immediate, signed */ 76 #define Ib 21 /* byte immediate, unsigned */ 77 #define Ibs 22 /* byte immediate, signed */ 78 #define Iw 23 /* word immediate, unsigned */ 79 #define O 25 /* direct address */ 80 #define Db 26 /* byte displacement from EIP */ 81 #define Dl 27 /* long displacement from EIP */ 82 #define o1 28 /* constant 1 */ 83 #define o3 29 /* constant 3 */ 84 #define OS 30 /* immediate offset/segment */ 85 #define ST 31 /* FP stack top */ 86 #define STI 32 /* FP stack */ 87 #define X 33 /* extended FP op */ 88 #define XA 34 /* for 'fstcw %ax' */ 89 #define El 35 /* address, long size */ 90 #define Ril 36 /* long register in instruction */ 91 #define Iba 37 /* byte immediate, don't print if 0xa */ 92 93 struct inst { 94 const char * i_name; /* name */ 95 short i_has_modrm; /* has regmodrm byte */ 96 short i_size; /* operand size */ 97 int i_mode; /* addressing modes */ 98 const void * i_extra; /* pointer to extra opcode table */ 99 }; 100 101 #define op1(x) (x) 102 #define op2(x,y) ((x)|((y)<<8)) 103 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16)) 104 105 struct finst { 106 const char * f_name; /* name for memory instruction */ 107 int f_size; /* size for memory instruction */ 108 int f_rrmode; /* mode for rr instruction */ 109 const void * f_rrname; /* name for rr instruction 110 (or pointer to table) */ 111 }; 112 113 static const char * const db_Grp6[] = { 114 "sldt", 115 "str", 116 "lldt", 117 "ltr", 118 "verr", 119 "verw", 120 "", 121 "" 122 }; 123 124 static const char * const db_Grp7[] = { 125 "sgdt", 126 "sidt", 127 "lgdt", 128 "lidt", 129 "smsw", 130 "", 131 "lmsw", 132 "invlpg" 133 }; 134 135 static const char * const db_Grp8[] = { 136 "", 137 "", 138 "", 139 "", 140 "bt", 141 "bts", 142 "btr", 143 "btc" 144 }; 145 146 static const char * const db_Grp9[] = { 147 "", 148 "cmpxchg8b", 149 "", 150 "", 151 "", 152 "", 153 "", 154 "" 155 }; 156 157 static const char * const db_Grp15[] = { 158 "fxsave", 159 "fxrstor", 160 "ldmxcsr", 161 "stmxcsr", 162 "", 163 "", 164 "", 165 "clflush" 166 }; 167 168 static const char * const db_Grp15b[] = { 169 "", 170 "", 171 "", 172 "", 173 "", 174 "lfence", 175 "mfence", 176 "sfence" 177 }; 178 179 static const struct inst db_inst_0f0x[] = { 180 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 }, 181 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 }, 182 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, 183 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, 184 /*04*/ { "", FALSE, NONE, 0, 0 }, 185 /*05*/ { "syscall",FALSE,NONE, 0, 0 }, 186 /*06*/ { "clts", FALSE, NONE, 0, 0 }, 187 /*07*/ { "sysret",FALSE, NONE, 0, 0 }, 188 189 /*08*/ { "invd", FALSE, NONE, 0, 0 }, 190 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 }, 191 /*0a*/ { "", FALSE, NONE, 0, 0 }, 192 /*0b*/ { "", FALSE, NONE, 0, 0 }, 193 /*0c*/ { "", FALSE, NONE, 0, 0 }, 194 /*0d*/ { "", FALSE, NONE, 0, 0 }, 195 /*0e*/ { "", FALSE, NONE, 0, 0 }, 196 /*0f*/ { "", FALSE, NONE, 0, 0 }, 197 }; 198 199 static const struct inst db_inst_0f1x[] = { 200 /*10*/ { "", FALSE, NONE, 0, 0 }, 201 /*11*/ { "", FALSE, NONE, 0, 0 }, 202 /*12*/ { "", FALSE, NONE, 0, 0 }, 203 /*13*/ { "", FALSE, NONE, 0, 0 }, 204 /*14*/ { "", FALSE, NONE, 0, 0 }, 205 /*15*/ { "", FALSE, NONE, 0, 0 }, 206 /*16*/ { "", FALSE, NONE, 0, 0 }, 207 /*17*/ { "", FALSE, NONE, 0, 0 }, 208 209 /*18*/ { "", FALSE, NONE, 0, 0 }, 210 /*19*/ { "", FALSE, NONE, 0, 0 }, 211 /*1a*/ { "", FALSE, NONE, 0, 0 }, 212 /*1b*/ { "", FALSE, NONE, 0, 0 }, 213 /*1c*/ { "", FALSE, NONE, 0, 0 }, 214 /*1d*/ { "", FALSE, NONE, 0, 0 }, 215 /*1e*/ { "", FALSE, NONE, 0, 0 }, 216 /*1f*/ { "nopl", TRUE, SDEP, 0, "nopw" }, 217 }; 218 219 static const struct inst db_inst_0f2x[] = { 220 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 }, 221 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 }, 222 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 }, 223 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 }, 224 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 }, 225 /*25*/ { "", FALSE, NONE, 0, 0 }, 226 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 }, 227 /*27*/ { "", FALSE, NONE, 0, 0 }, 228 229 /*28*/ { "", FALSE, NONE, 0, 0 }, 230 /*29*/ { "", FALSE, NONE, 0, 0 }, 231 /*2a*/ { "", FALSE, NONE, 0, 0 }, 232 /*2b*/ { "", FALSE, NONE, 0, 0 }, 233 /*2c*/ { "", FALSE, NONE, 0, 0 }, 234 /*2d*/ { "", FALSE, NONE, 0, 0 }, 235 /*2e*/ { "", FALSE, NONE, 0, 0 }, 236 /*2f*/ { "", FALSE, NONE, 0, 0 }, 237 }; 238 239 static const struct inst db_inst_0f3x[] = { 240 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 }, 241 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 }, 242 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 }, 243 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 }, 244 /*34*/ { "sysenter",FALSE,NONE, 0, 0 }, 245 /*35*/ { "sysexit",FALSE,NONE, 0, 0 }, 246 /*36*/ { "", FALSE, NONE, 0, 0 }, 247 /*37*/ { "getsec",FALSE, NONE, 0, 0 }, 248 249 /*38*/ { "", FALSE, NONE, 0, 0 }, 250 /*39*/ { "", FALSE, NONE, 0, 0 }, 251 /*3a*/ { "", FALSE, NONE, 0, 0 }, 252 /*3b*/ { "", FALSE, NONE, 0, 0 }, 253 /*3c*/ { "", FALSE, NONE, 0, 0 }, 254 /*3d*/ { "", FALSE, NONE, 0, 0 }, 255 /*3e*/ { "", FALSE, NONE, 0, 0 }, 256 /*3f*/ { "", FALSE, NONE, 0, 0 }, 257 }; 258 259 static const struct inst db_inst_0f4x[] = { 260 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 }, 261 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 }, 262 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 }, 263 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 }, 264 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 }, 265 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 }, 266 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 }, 267 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 }, 268 269 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 }, 270 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 }, 271 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 }, 272 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 }, 273 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 }, 274 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 }, 275 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 }, 276 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 }, 277 }; 278 279 static const struct inst db_inst_0f8x[] = { 280 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 }, 281 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 }, 282 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 }, 283 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 }, 284 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 }, 285 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 }, 286 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 }, 287 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 }, 288 289 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 }, 290 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 }, 291 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 }, 292 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 }, 293 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 }, 294 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 }, 295 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 }, 296 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 }, 297 }; 298 299 static const struct inst db_inst_0f9x[] = { 300 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 }, 301 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 }, 302 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 }, 303 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 }, 304 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 }, 305 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 }, 306 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 }, 307 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 }, 308 309 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 }, 310 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 }, 311 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 }, 312 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 }, 313 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 }, 314 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 }, 315 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 }, 316 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 }, 317 }; 318 319 static const struct inst db_inst_0fax[] = { 320 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 }, 321 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 }, 322 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 }, 323 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 }, 324 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 }, 325 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 }, 326 /*a6*/ { "", FALSE, NONE, 0, 0 }, 327 /*a7*/ { "", FALSE, NONE, 0, 0 }, 328 329 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 }, 330 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 }, 331 /*aa*/ { "rsm", FALSE, NONE, 0, 0 }, 332 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 }, 333 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 }, 334 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 }, 335 /*ae*/ { "", TRUE, LONG, op1(E), db_Grp15 }, 336 /*af*/ { "imul", TRUE, LONG, op2(E,R), 0 }, 337 }; 338 339 static const struct inst db_inst_0fbx[] = { 340 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, 341 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, 342 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, 343 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 }, 344 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 }, 345 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 }, 346 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 }, 347 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 }, 348 349 /*b8*/ { "", FALSE, NONE, 0, 0 }, 350 /*b9*/ { "", FALSE, NONE, 0, 0 }, 351 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 }, 352 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 }, 353 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 }, 354 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 }, 355 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 }, 356 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 }, 357 }; 358 359 static const struct inst db_inst_0fcx[] = { 360 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 }, 361 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 }, 362 /*c2*/ { "", FALSE, NONE, 0, 0 }, 363 /*c3*/ { "", FALSE, NONE, 0, 0 }, 364 /*c4*/ { "", FALSE, NONE, 0, 0 }, 365 /*c5*/ { "", FALSE, NONE, 0, 0 }, 366 /*c6*/ { "", FALSE, NONE, 0, 0 }, 367 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 }, 368 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 369 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 370 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 371 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 372 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 373 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 374 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 375 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 376 }; 377 378 static const struct inst * const db_inst_0f[] = { 379 db_inst_0f0x, 380 db_inst_0f1x, 381 db_inst_0f2x, 382 db_inst_0f3x, 383 db_inst_0f4x, 384 0, 385 0, 386 0, 387 db_inst_0f8x, 388 db_inst_0f9x, 389 db_inst_0fax, 390 db_inst_0fbx, 391 db_inst_0fcx, 392 0, 393 0, 394 0 395 }; 396 397 static const char * const db_Esc92[] = { 398 "fnop", "", "", "", "", "", "", "" 399 }; 400 static const char * const db_Esc94[] = { 401 "fchs", "fabs", "", "", "ftst", "fxam", "", "" 402 }; 403 static const char * const db_Esc95[] = { 404 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","" 405 }; 406 static const char * const db_Esc96[] = { 407 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp", 408 "fincstp" 409 }; 410 static const char * const db_Esc97[] = { 411 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos" 412 }; 413 414 static const char * const db_Esca5[] = { 415 "", "fucompp","", "", "", "", "", "" 416 }; 417 418 static const char * const db_Escb4[] = { 419 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", "" 420 }; 421 422 static const char * const db_Esce3[] = { 423 "", "fcompp","", "", "", "", "", "" 424 }; 425 426 static const char * const db_Escf4[] = { 427 "fnstsw","", "", "", "", "", "", "" 428 }; 429 430 static const struct finst db_Esc8[] = { 431 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 }, 432 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 }, 433 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 }, 434 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 }, 435 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 }, 436 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 }, 437 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 }, 438 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 }, 439 }; 440 441 static const struct finst db_Esc9[] = { 442 /*0*/ { "fld", SNGL, op1(STI), 0 }, 443 /*1*/ { "", NONE, op1(STI), "fxch" }, 444 /*2*/ { "fst", SNGL, op1(X), db_Esc92 }, 445 /*3*/ { "fstp", SNGL, 0, 0 }, 446 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 }, 447 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 }, 448 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 }, 449 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 }, 450 }; 451 452 static const struct finst db_Esca[] = { 453 /*0*/ { "fiadd", LONG, 0, 0 }, 454 /*1*/ { "fimul", LONG, 0, 0 }, 455 /*2*/ { "ficom", LONG, 0, 0 }, 456 /*3*/ { "ficomp", LONG, 0, 0 }, 457 /*4*/ { "fisub", LONG, 0, 0 }, 458 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 }, 459 /*6*/ { "fidiv", LONG, 0, 0 }, 460 /*7*/ { "fidivr", LONG, 0, 0 } 461 }; 462 463 static const struct finst db_Escb[] = { 464 /*0*/ { "fild", LONG, 0, 0 }, 465 /*1*/ { "", NONE, 0, 0 }, 466 /*2*/ { "fist", LONG, 0, 0 }, 467 /*3*/ { "fistp", LONG, 0, 0 }, 468 /*4*/ { "", WORD, op1(X), db_Escb4 }, 469 /*5*/ { "fld", EXTR, 0, 0 }, 470 /*6*/ { "", WORD, 0, 0 }, 471 /*7*/ { "fstp", EXTR, 0, 0 }, 472 }; 473 474 static const struct finst db_Escc[] = { 475 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 }, 476 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 }, 477 /*2*/ { "fcom", DBLR, 0, 0 }, 478 /*3*/ { "fcomp", DBLR, 0, 0 }, 479 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" }, 480 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" }, 481 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" }, 482 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" }, 483 }; 484 485 static const struct finst db_Escd[] = { 486 /*0*/ { "fld", DBLR, op1(STI), "ffree" }, 487 /*1*/ { "", NONE, 0, 0 }, 488 /*2*/ { "fst", DBLR, op1(STI), 0 }, 489 /*3*/ { "fstp", DBLR, op1(STI), 0 }, 490 /*4*/ { "frstor", NONE, op1(STI), "fucom" }, 491 /*5*/ { "", NONE, op1(STI), "fucomp" }, 492 /*6*/ { "fnsave", NONE, 0, 0 }, 493 /*7*/ { "fnstsw", NONE, 0, 0 }, 494 }; 495 496 static const struct finst db_Esce[] = { 497 /*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" }, 498 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" }, 499 /*2*/ { "ficom", WORD, 0, 0 }, 500 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 }, 501 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" }, 502 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" }, 503 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" }, 504 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" }, 505 }; 506 507 static const struct finst db_Escf[] = { 508 /*0*/ { "fild", WORD, 0, 0 }, 509 /*1*/ { "", NONE, 0, 0 }, 510 /*2*/ { "fist", WORD, 0, 0 }, 511 /*3*/ { "fistp", WORD, 0, 0 }, 512 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 }, 513 /*5*/ { "fild", QUAD, 0, 0 }, 514 /*6*/ { "fbstp", NONE, 0, 0 }, 515 /*7*/ { "fistp", QUAD, 0, 0 }, 516 }; 517 518 static const struct finst * const db_Esc_inst[] = { 519 db_Esc8, db_Esc9, db_Esca, db_Escb, 520 db_Escc, db_Escd, db_Esce, db_Escf 521 }; 522 523 static const char * const db_Grp1[] = { 524 "add", 525 "or", 526 "adc", 527 "sbb", 528 "and", 529 "sub", 530 "xor", 531 "cmp" 532 }; 533 534 static const char * const db_Grp2[] = { 535 "rol", 536 "ror", 537 "rcl", 538 "rcr", 539 "shl", 540 "shr", 541 "shl", 542 "sar" 543 }; 544 545 static const struct inst db_Grp3[] = { 546 { "test", TRUE, NONE, op2(I,E), 0 }, 547 { "test", TRUE, NONE, op2(I,E), 0 }, 548 { "not", TRUE, NONE, op1(E), 0 }, 549 { "neg", TRUE, NONE, op1(E), 0 }, 550 { "mul", TRUE, NONE, op2(E,A), 0 }, 551 { "imul", TRUE, NONE, op2(E,A), 0 }, 552 { "div", TRUE, NONE, op2(E,A), 0 }, 553 { "idiv", TRUE, NONE, op2(E,A), 0 }, 554 }; 555 556 static const struct inst db_Grp4[] = { 557 { "inc", TRUE, BYTE, op1(E), 0 }, 558 { "dec", TRUE, BYTE, op1(E), 0 }, 559 { "", TRUE, NONE, 0, 0 }, 560 { "", TRUE, NONE, 0, 0 }, 561 { "", TRUE, NONE, 0, 0 }, 562 { "", TRUE, NONE, 0, 0 }, 563 { "", TRUE, NONE, 0, 0 }, 564 { "", TRUE, NONE, 0, 0 } 565 }; 566 567 static const struct inst db_Grp5[] = { 568 { "inc", TRUE, LONG, op1(E), 0 }, 569 { "dec", TRUE, LONG, op1(E), 0 }, 570 { "call", TRUE, LONG, op1(Eind),0 }, 571 { "lcall", TRUE, LONG, op1(Eind),0 }, 572 { "jmp", TRUE, LONG, op1(Eind),0 }, 573 { "ljmp", TRUE, LONG, op1(Eind),0 }, 574 { "push", TRUE, LONG, op1(E), 0 }, 575 { "", TRUE, NONE, 0, 0 } 576 }; 577 578 static const struct inst db_inst_table[256] = { 579 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 }, 580 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 }, 581 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 }, 582 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 }, 583 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 }, 584 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 }, 585 /*06*/ { "push", FALSE, NONE, op1(Si), 0 }, 586 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 }, 587 588 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 }, 589 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 }, 590 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 }, 591 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 }, 592 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 }, 593 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 }, 594 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 }, 595 /*0f*/ { "", FALSE, NONE, 0, 0 }, 596 597 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 }, 598 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 }, 599 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 }, 600 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 }, 601 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 }, 602 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 }, 603 /*16*/ { "push", FALSE, NONE, op1(Si), 0 }, 604 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 }, 605 606 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 }, 607 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 }, 608 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 }, 609 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 }, 610 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 }, 611 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 }, 612 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 }, 613 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 }, 614 615 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 }, 616 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 }, 617 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 }, 618 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 }, 619 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 }, 620 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 }, 621 /*26*/ { "", FALSE, NONE, 0, 0 }, 622 /*27*/ { "daa", FALSE, NONE, 0, 0 }, 623 624 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 }, 625 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 }, 626 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 }, 627 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 }, 628 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 }, 629 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 }, 630 /*2e*/ { "", FALSE, NONE, 0, 0 }, 631 /*2f*/ { "das", FALSE, NONE, 0, 0 }, 632 633 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 }, 634 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 }, 635 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 }, 636 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 }, 637 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 }, 638 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 }, 639 /*36*/ { "", FALSE, NONE, 0, 0 }, 640 /*37*/ { "aaa", FALSE, NONE, 0, 0 }, 641 642 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 }, 643 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 }, 644 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 }, 645 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 }, 646 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 }, 647 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, 648 /*3e*/ { "", FALSE, NONE, 0, 0 }, 649 /*3f*/ { "aas", FALSE, NONE, 0, 0 }, 650 651 /*40*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 652 /*41*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 653 /*42*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 654 /*43*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 655 /*44*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 656 /*45*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 657 /*46*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 658 /*47*/ { "inc", FALSE, LONG, op1(Ri), 0 }, 659 660 /*48*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 661 /*49*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 662 /*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 663 /*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 664 /*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 665 /*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 666 /*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 667 /*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 }, 668 669 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 }, 670 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 }, 671 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 }, 672 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 }, 673 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 }, 674 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 }, 675 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 }, 676 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 }, 677 678 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 679 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 680 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 681 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 682 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 683 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 684 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 685 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 686 687 /*60*/ { "pusha", FALSE, LONG, 0, 0 }, 688 /*61*/ { "popa", FALSE, LONG, 0, 0 }, 689 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 }, 690 /*63*/ { "arpl", TRUE, NONE, op2(Rw,Ew), 0 }, 691 692 /*64*/ { "", FALSE, NONE, 0, 0 }, 693 /*65*/ { "", FALSE, NONE, 0, 0 }, 694 /*66*/ { "", FALSE, NONE, 0, 0 }, 695 /*67*/ { "", FALSE, NONE, 0, 0 }, 696 697 /*68*/ { "push", FALSE, LONG, op1(I), 0 }, 698 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 }, 699 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 }, 700 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 }, 701 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 }, 702 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 }, 703 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 }, 704 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 }, 705 706 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 }, 707 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 }, 708 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 }, 709 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 }, 710 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 }, 711 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 }, 712 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 }, 713 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 }, 714 715 /*78*/ { "js", FALSE, NONE, op1(Db), 0 }, 716 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 }, 717 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 }, 718 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 }, 719 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 }, 720 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 }, 721 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 }, 722 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 }, 723 724 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 725 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 }, 726 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 727 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 }, 728 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 }, 729 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 }, 730 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 }, 731 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 }, 732 733 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 }, 734 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 }, 735 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 }, 736 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 }, 737 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 }, 738 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 }, 739 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 }, 740 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 }, 741 742 /*90*/ { "nop", FALSE, NONE, 0, 0 }, 743 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 744 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 745 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 746 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 747 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 748 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 749 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 750 751 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */ 752 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */ 753 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 }, 754 /*9b*/ { "wait", FALSE, NONE, 0, 0 }, 755 /*9c*/ { "pushf", FALSE, LONG, 0, 0 }, 756 /*9d*/ { "popf", FALSE, LONG, 0, 0 }, 757 /*9e*/ { "sahf", FALSE, NONE, 0, 0 }, 758 /*9f*/ { "lahf", FALSE, NONE, 0, 0 }, 759 760 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 }, 761 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 }, 762 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 }, 763 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 }, 764 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 }, 765 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 }, 766 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 }, 767 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 }, 768 769 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 }, 770 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 }, 771 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 }, 772 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 }, 773 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 }, 774 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 }, 775 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 }, 776 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 }, 777 778 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 779 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 780 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 781 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 782 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 783 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 784 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 785 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 786 787 /*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 788 /*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 789 /*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 790 /*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 791 /*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 792 /*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 793 /*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 794 /*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 }, 795 796 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 }, 797 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 }, 798 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 }, 799 /*c3*/ { "ret", FALSE, NONE, 0, 0 }, 800 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 }, 801 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 }, 802 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 }, 803 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 }, 804 805 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 }, 806 /*c9*/ { "leave", FALSE, NONE, 0, 0 }, 807 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 }, 808 /*cb*/ { "lret", FALSE, NONE, 0, 0 }, 809 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 }, 810 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 }, 811 /*ce*/ { "into", FALSE, NONE, 0, 0 }, 812 /*cf*/ { "iret", FALSE, NONE, 0, 0 }, 813 814 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 }, 815 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 }, 816 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 }, 817 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 }, 818 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 }, 819 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 }, 820 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 }, 821 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, 822 823 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 }, 824 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 }, 825 /*da*/ { "", TRUE, NONE, 0, db_Esca }, 826 /*db*/ { "", TRUE, NONE, 0, db_Escb }, 827 /*dc*/ { "", TRUE, NONE, 0, db_Escc }, 828 /*dd*/ { "", TRUE, NONE, 0, db_Escd }, 829 /*de*/ { "", TRUE, NONE, 0, db_Esce }, 830 /*df*/ { "", TRUE, NONE, 0, db_Escf }, 831 832 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, 833 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, 834 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, 835 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" }, 836 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 }, 837 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 }, 838 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 }, 839 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 }, 840 841 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 }, 842 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 }, 843 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 }, 844 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 }, 845 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 }, 846 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 }, 847 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 }, 848 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 }, 849 850 /*f0*/ { "", FALSE, NONE, 0, 0 }, 851 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 }, 852 /*f2*/ { "", FALSE, NONE, 0, 0 }, 853 /*f3*/ { "", FALSE, NONE, 0, 0 }, 854 /*f4*/ { "hlt", FALSE, NONE, 0, 0 }, 855 /*f5*/ { "cmc", FALSE, NONE, 0, 0 }, 856 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 }, 857 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 }, 858 859 /*f8*/ { "clc", FALSE, NONE, 0, 0 }, 860 /*f9*/ { "stc", FALSE, NONE, 0, 0 }, 861 /*fa*/ { "cli", FALSE, NONE, 0, 0 }, 862 /*fb*/ { "sti", FALSE, NONE, 0, 0 }, 863 /*fc*/ { "cld", FALSE, NONE, 0, 0 }, 864 /*fd*/ { "std", FALSE, NONE, 0, 0 }, 865 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 }, 866 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 }, 867 }; 868 869 static const struct inst db_bad_inst = 870 { "???", FALSE, NONE, 0, 0 } 871 ; 872 873 #define f_mod(byte) ((byte)>>6) 874 #define f_reg(byte) (((byte)>>3)&0x7) 875 #define f_rm(byte) ((byte)&0x7) 876 877 #define sib_ss(byte) ((byte)>>6) 878 #define sib_index(byte) (((byte)>>3)&0x7) 879 #define sib_base(byte) ((byte)&0x7) 880 881 struct i_addr { 882 int is_reg; /* if reg, reg number is in 'disp' */ 883 int disp; 884 const char * base; 885 const char * index; 886 int ss; 887 bool defss; /* set if %ss is the default segment */ 888 }; 889 890 static const char * const db_index_reg_16[8] = { 891 "%bx,%si", 892 "%bx,%di", 893 "%bp,%si", 894 "%bp,%di", 895 "%si", 896 "%di", 897 "%bp", 898 "%bx" 899 }; 900 901 static const char * const db_reg[3][8] = { 902 { "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh" }, 903 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" }, 904 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi" } 905 }; 906 907 static const char * const db_seg_reg[8] = { 908 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", "" 909 }; 910 911 /* 912 * lengths for size attributes 913 */ 914 static const int db_lengths[] = { 915 1, /* BYTE */ 916 2, /* WORD */ 917 4, /* LONG */ 918 8, /* QUAD */ 919 4, /* SNGL */ 920 8, /* DBLR */ 921 10, /* EXTR */ 922 }; 923 924 #define get_value_inc(result, loc, size, is_signed) \ 925 result = db_get_value((loc), (size), (is_signed)); \ 926 (loc) += (size); 927 928 static db_addr_t 929 db_disasm_esc(db_addr_t loc, int inst, int short_addr, 930 int size, const char *seg); 931 static void db_print_address(const char *seg, int size, 932 struct i_addr *addrp); 933 static db_addr_t 934 db_read_address(db_addr_t loc, int short_addr, int regmodrm, 935 struct i_addr *addrp); 936 937 /* 938 * Read address at location and return updated location. 939 */ 940 static db_addr_t 941 db_read_address(loc, short_addr, regmodrm, addrp) 942 db_addr_t loc; 943 int short_addr; 944 int regmodrm; 945 struct i_addr * addrp; /* out */ 946 { 947 int mod, rm, sib, index, disp; 948 949 mod = f_mod(regmodrm); 950 rm = f_rm(regmodrm); 951 952 if (mod == 3) { 953 addrp->is_reg = TRUE; 954 addrp->disp = rm; 955 return (loc); 956 } 957 addrp->is_reg = FALSE; 958 addrp->index = NULL; 959 addrp->ss = 0; 960 addrp->defss = FALSE; 961 962 if (short_addr) { 963 if (rm == 2 || rm == 3 || (rm == 6 && mod != 0)) 964 addrp->defss = TRUE; 965 switch (mod) { 966 case 0: 967 if (rm == 6) { 968 get_value_inc(disp, loc, 2, FALSE); 969 addrp->disp = disp; 970 addrp->base = NULL; 971 } 972 else { 973 addrp->disp = 0; 974 addrp->base = db_index_reg_16[rm]; 975 } 976 break; 977 case 1: 978 get_value_inc(disp, loc, 1, TRUE); 979 disp &= 0xFFFF; 980 addrp->disp = disp; 981 addrp->base = db_index_reg_16[rm]; 982 break; 983 case 2: 984 get_value_inc(disp, loc, 2, FALSE); 985 addrp->disp = disp; 986 addrp->base = db_index_reg_16[rm]; 987 break; 988 } 989 } 990 else { 991 if (rm == 4) { 992 get_value_inc(sib, loc, 1, FALSE); 993 rm = sib_base(sib); 994 index = sib_index(sib); 995 if (index != 4) 996 addrp->index = db_reg[LONG][index]; 997 addrp->ss = sib_ss(sib); 998 } 999 1000 switch (mod) { 1001 case 0: 1002 if (rm == 5) { 1003 get_value_inc(addrp->disp, loc, 4, FALSE); 1004 addrp->base = NULL; 1005 } 1006 else { 1007 addrp->disp = 0; 1008 addrp->base = db_reg[LONG][rm]; 1009 } 1010 break; 1011 1012 case 1: 1013 get_value_inc(disp, loc, 1, TRUE); 1014 addrp->disp = disp; 1015 addrp->base = db_reg[LONG][rm]; 1016 break; 1017 1018 case 2: 1019 get_value_inc(disp, loc, 4, FALSE); 1020 addrp->disp = disp; 1021 addrp->base = db_reg[LONG][rm]; 1022 break; 1023 } 1024 } 1025 return (loc); 1026 } 1027 1028 static void 1029 db_print_address(seg, size, addrp) 1030 const char * seg; 1031 int size; 1032 struct i_addr * addrp; 1033 { 1034 if (addrp->is_reg) { 1035 db_printf("%s", db_reg[size][addrp->disp]); 1036 return; 1037 } 1038 1039 if (seg) { 1040 db_printf("%s:", seg); 1041 } 1042 else if (addrp->defss) { 1043 db_printf("%%ss:"); 1044 } 1045 1046 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY); 1047 if (addrp->base != NULL || addrp->index != NULL) { 1048 db_printf("("); 1049 if (addrp->base) 1050 db_printf("%s", addrp->base); 1051 if (addrp->index) 1052 db_printf(",%s,%d", addrp->index, 1<<addrp->ss); 1053 db_printf(")"); 1054 } 1055 } 1056 1057 /* 1058 * Disassemble floating-point ("escape") instruction 1059 * and return updated location. 1060 */ 1061 static db_addr_t 1062 db_disasm_esc(loc, inst, short_addr, size, seg) 1063 db_addr_t loc; 1064 int inst; 1065 int short_addr; 1066 int size; 1067 const char * seg; 1068 { 1069 int regmodrm; 1070 const struct finst * fp; 1071 int mod; 1072 struct i_addr address; 1073 const char * name; 1074 1075 get_value_inc(regmodrm, loc, 1, FALSE); 1076 fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)]; 1077 mod = f_mod(regmodrm); 1078 if (mod != 3) { 1079 if (*fp->f_name == '\0') { 1080 db_printf("<bad instruction>"); 1081 return (loc); 1082 } 1083 /* 1084 * Normal address modes. 1085 */ 1086 loc = db_read_address(loc, short_addr, regmodrm, &address); 1087 db_printf("%s", fp->f_name); 1088 switch(fp->f_size) { 1089 case SNGL: 1090 db_printf("s"); 1091 break; 1092 case DBLR: 1093 db_printf("l"); 1094 break; 1095 case EXTR: 1096 db_printf("t"); 1097 break; 1098 case WORD: 1099 db_printf("s"); 1100 break; 1101 case LONG: 1102 db_printf("l"); 1103 break; 1104 case QUAD: 1105 db_printf("q"); 1106 break; 1107 default: 1108 break; 1109 } 1110 db_printf("\t"); 1111 db_print_address(seg, BYTE, &address); 1112 } 1113 else { 1114 /* 1115 * 'reg-reg' - special formats 1116 */ 1117 switch (fp->f_rrmode) { 1118 case op2(ST,STI): 1119 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1120 db_printf("%s\t%%st,%%st(%d)",name,f_rm(regmodrm)); 1121 break; 1122 case op2(STI,ST): 1123 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1124 db_printf("%s\t%%st(%d),%%st",name, f_rm(regmodrm)); 1125 break; 1126 case op1(STI): 1127 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1128 db_printf("%s\t%%st(%d)",name, f_rm(regmodrm)); 1129 break; 1130 case op1(X): 1131 name = ((const char * const *)fp->f_rrname)[f_rm(regmodrm)]; 1132 if (*name == '\0') 1133 goto bad; 1134 db_printf("%s", name); 1135 break; 1136 case op1(XA): 1137 name = ((const char * const *)fp->f_rrname)[f_rm(regmodrm)]; 1138 if (*name == '\0') 1139 goto bad; 1140 db_printf("%s\t%%ax", name); 1141 break; 1142 default: 1143 bad: 1144 db_printf("<bad instruction>"); 1145 break; 1146 } 1147 } 1148 1149 return (loc); 1150 } 1151 1152 /* 1153 * Disassemble instruction at 'loc'. 'altfmt' specifies an 1154 * (optional) alternate format. Return address of start of 1155 * next instruction. 1156 */ 1157 db_addr_t 1158 db_disasm(db_addr_t loc, bool altfmt) 1159 { 1160 int inst; 1161 int size; 1162 int short_addr; 1163 const char * seg; 1164 const struct inst * ip; 1165 const char * i_name; 1166 int i_size; 1167 int i_mode; 1168 int regmodrm = 0; 1169 bool first; 1170 int displ; 1171 int prefix; 1172 int rep; 1173 int imm; 1174 int imm2; 1175 int len; 1176 struct i_addr address; 1177 1178 if (db_segsize(kdb_frame) == 16) 1179 altfmt = !altfmt; 1180 get_value_inc(inst, loc, 1, FALSE); 1181 if (altfmt) { 1182 short_addr = TRUE; 1183 size = WORD; 1184 } 1185 else { 1186 short_addr = FALSE; 1187 size = LONG; 1188 } 1189 seg = NULL; 1190 1191 /* 1192 * Get prefixes 1193 */ 1194 rep = FALSE; 1195 prefix = TRUE; 1196 do { 1197 switch (inst) { 1198 case 0x66: 1199 size = (altfmt ? LONG : WORD); 1200 break; 1201 case 0x67: 1202 short_addr = !altfmt; 1203 break; 1204 case 0x26: 1205 seg = "%es"; 1206 break; 1207 case 0x36: 1208 seg = "%ss"; 1209 break; 1210 case 0x2e: 1211 seg = "%cs"; 1212 break; 1213 case 0x3e: 1214 seg = "%ds"; 1215 break; 1216 case 0x64: 1217 seg = "%fs"; 1218 break; 1219 case 0x65: 1220 seg = "%gs"; 1221 break; 1222 case 0xf0: 1223 db_printf("lock "); 1224 break; 1225 case 0xf2: 1226 db_printf("repne "); 1227 break; 1228 case 0xf3: 1229 rep = TRUE; 1230 break; 1231 default: 1232 prefix = FALSE; 1233 break; 1234 } 1235 if (prefix) { 1236 get_value_inc(inst, loc, 1, FALSE); 1237 } 1238 if (rep == TRUE) { 1239 if (inst == 0x90) { 1240 db_printf("pause\n"); 1241 return (loc); 1242 } 1243 db_printf("repe "); /* XXX repe VS rep */ 1244 rep = FALSE; 1245 } 1246 } while (prefix); 1247 1248 if (inst >= 0xd8 && inst <= 0xdf) { 1249 loc = db_disasm_esc(loc, inst, short_addr, size, seg); 1250 db_printf("\n"); 1251 return (loc); 1252 } 1253 1254 if (inst == 0x0f) { 1255 get_value_inc(inst, loc, 1, FALSE); 1256 ip = db_inst_0f[inst>>4]; 1257 if (ip == NULL) { 1258 ip = &db_bad_inst; 1259 } 1260 else { 1261 ip = &ip[inst&0xf]; 1262 } 1263 } 1264 else 1265 ip = &db_inst_table[inst]; 1266 1267 if (ip->i_has_modrm) { 1268 get_value_inc(regmodrm, loc, 1, FALSE); 1269 loc = db_read_address(loc, short_addr, regmodrm, &address); 1270 } 1271 1272 i_name = ip->i_name; 1273 i_size = ip->i_size; 1274 i_mode = ip->i_mode; 1275 1276 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 || 1277 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 || 1278 ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9 || 1279 ip->i_extra == db_Grp15) { 1280 i_name = ((const char * const *)ip->i_extra)[f_reg(regmodrm)]; 1281 } 1282 else if (ip->i_extra == db_Grp3) { 1283 ip = ip->i_extra; 1284 ip = &ip[f_reg(regmodrm)]; 1285 i_name = ip->i_name; 1286 i_mode = ip->i_mode; 1287 } 1288 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) { 1289 ip = ip->i_extra; 1290 ip = &ip[f_reg(regmodrm)]; 1291 i_name = ip->i_name; 1292 i_mode = ip->i_mode; 1293 i_size = ip->i_size; 1294 } 1295 1296 /* Special cases that don't fit well in the tables. */ 1297 if (ip->i_extra == db_Grp7 && f_mod(regmodrm) == 3) { 1298 switch (regmodrm) { 1299 case 0xc8: 1300 i_name = "monitor"; 1301 i_size = NONE; 1302 i_mode = 0; 1303 break; 1304 case 0xc9: 1305 i_name = "mwait"; 1306 i_size = NONE; 1307 i_mode = 0; 1308 break; 1309 } 1310 } 1311 if (ip->i_extra == db_Grp15 && f_mod(regmodrm) == 3) { 1312 i_name = db_Grp15b[f_reg(regmodrm)]; 1313 i_size = NONE; 1314 i_mode = 0; 1315 } 1316 1317 if (i_size == SDEP) { 1318 if (size == WORD) 1319 db_printf("%s", i_name); 1320 else 1321 db_printf("%s", (const char *)ip->i_extra); 1322 } 1323 else { 1324 db_printf("%s", i_name); 1325 if (i_size != NONE) { 1326 if (i_size == BYTE) { 1327 db_printf("b"); 1328 size = BYTE; 1329 } 1330 else if (i_size == WORD) { 1331 db_printf("w"); 1332 size = WORD; 1333 } 1334 else if (size == WORD) 1335 db_printf("w"); 1336 else 1337 db_printf("l"); 1338 } 1339 } 1340 db_printf("\t"); 1341 for (first = true; 1342 i_mode != 0; 1343 i_mode >>= 8, first = false) 1344 { 1345 if (!first) 1346 db_printf(","); 1347 1348 switch (i_mode & 0xFF) { 1349 1350 case E: 1351 db_print_address(seg, size, &address); 1352 break; 1353 1354 case Eind: 1355 db_printf("*"); 1356 db_print_address(seg, size, &address); 1357 break; 1358 1359 case El: 1360 db_print_address(seg, LONG, &address); 1361 break; 1362 1363 case Ew: 1364 db_print_address(seg, WORD, &address); 1365 break; 1366 1367 case Eb: 1368 db_print_address(seg, BYTE, &address); 1369 break; 1370 1371 case R: 1372 db_printf("%s", db_reg[size][f_reg(regmodrm)]); 1373 break; 1374 1375 case Rw: 1376 db_printf("%s", db_reg[WORD][f_reg(regmodrm)]); 1377 break; 1378 1379 case Ri: 1380 db_printf("%s", db_reg[size][f_rm(inst)]); 1381 break; 1382 1383 case Ril: 1384 db_printf("%s", db_reg[LONG][f_rm(inst)]); 1385 break; 1386 1387 case S: 1388 db_printf("%s", db_seg_reg[f_reg(regmodrm)]); 1389 break; 1390 1391 case Si: 1392 db_printf("%s", db_seg_reg[f_reg(inst)]); 1393 break; 1394 1395 case A: 1396 db_printf("%s", db_reg[size][0]); /* acc */ 1397 break; 1398 1399 case BX: 1400 if (seg) 1401 db_printf("%s:", seg); 1402 db_printf("(%s)", short_addr ? "%bx" : "%ebx"); 1403 break; 1404 1405 case CL: 1406 db_printf("%%cl"); 1407 break; 1408 1409 case DX: 1410 db_printf("%%dx"); 1411 break; 1412 1413 case SI: 1414 if (seg) 1415 db_printf("%s:", seg); 1416 db_printf("(%s)", short_addr ? "%si" : "%esi"); 1417 break; 1418 1419 case DI: 1420 db_printf("%%es:(%s)", short_addr ? "%di" : "%edi"); 1421 break; 1422 1423 case CR: 1424 db_printf("%%cr%d", f_reg(regmodrm)); 1425 break; 1426 1427 case DR: 1428 db_printf("%%dr%d", f_reg(regmodrm)); 1429 break; 1430 1431 case TR: 1432 db_printf("%%tr%d", f_reg(regmodrm)); 1433 break; 1434 1435 case I: 1436 len = db_lengths[size]; 1437 get_value_inc(imm, loc, len, FALSE); 1438 db_printf("$%#r", imm); 1439 break; 1440 1441 case Is: 1442 len = db_lengths[size]; 1443 get_value_inc(imm, loc, len, FALSE); 1444 db_printf("$%+#r", imm); 1445 break; 1446 1447 case Ib: 1448 get_value_inc(imm, loc, 1, FALSE); 1449 db_printf("$%#r", imm); 1450 break; 1451 1452 case Iba: 1453 get_value_inc(imm, loc, 1, FALSE); 1454 if (imm != 0x0a) 1455 db_printf("$%#r", imm); 1456 break; 1457 1458 case Ibs: 1459 get_value_inc(imm, loc, 1, TRUE); 1460 if (size == WORD) 1461 imm &= 0xFFFF; 1462 db_printf("$%+#r", imm); 1463 break; 1464 1465 case Iw: 1466 get_value_inc(imm, loc, 2, FALSE); 1467 db_printf("$%#r", imm); 1468 break; 1469 1470 case O: 1471 len = (short_addr ? 2 : 4); 1472 get_value_inc(displ, loc, len, FALSE); 1473 if (seg) 1474 db_printf("%s:%+#r",seg, displ); 1475 else 1476 db_printsym((db_addr_t)displ, DB_STGY_ANY); 1477 break; 1478 1479 case Db: 1480 get_value_inc(displ, loc, 1, TRUE); 1481 displ += loc; 1482 if (size == WORD) 1483 displ &= 0xFFFF; 1484 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1485 break; 1486 1487 case Dl: 1488 len = db_lengths[size]; 1489 get_value_inc(displ, loc, len, FALSE); 1490 displ += loc; 1491 if (size == WORD) 1492 displ &= 0xFFFF; 1493 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1494 break; 1495 1496 case o1: 1497 db_printf("$1"); 1498 break; 1499 1500 case o3: 1501 db_printf("$3"); 1502 break; 1503 1504 case OS: 1505 len = db_lengths[size]; 1506 get_value_inc(imm, loc, len, FALSE); /* offset */ 1507 get_value_inc(imm2, loc, 2, FALSE); /* segment */ 1508 db_printf("$%#r,%#r", imm2, imm); 1509 break; 1510 } 1511 } 1512 db_printf("\n"); 1513 return (loc); 1514 } 1515