1 /* 2 * Copyright (c) 2008 The DragonFly Project. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 3. Neither the name of The DragonFly Project nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific, prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * -- 32 * 33 * Mach Operating System 34 * Copyright (c) 1991,1990 Carnegie Mellon University 35 * All Rights Reserved. 36 * 37 * Permission to use, copy, modify and distribute this software and its 38 * documentation is hereby granted, provided that both the copyright 39 * notice and this permission notice appear in all copies of the 40 * software, derivative works or modified versions, and any portions 41 * thereof, and that both notices appear in supporting documentation. 42 * 43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 46 * 47 * Carnegie Mellon requests users of this software to return to 48 * 49 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 50 * School of Computer Science 51 * Carnegie Mellon University 52 * Pittsburgh PA 15213-3890 53 * 54 * any improvements or extensions that they make and grant Carnegie the 55 * rights to redistribute these changes. 56 */ 57 58 /* 59 * Instruction disassembler. 60 */ 61 #include <sys/param.h> 62 63 #include <ddb/ddb.h> 64 #include <ddb/db_access.h> 65 #include <ddb/db_output.h> 66 #include <ddb/db_sym.h> 67 68 /* 69 * Size attributes 70 */ 71 #define BYTE 0 72 #define WORD 1 73 #define LONG 2 74 #define QUAD 3 75 #define SNGL 4 76 #define DBLR 5 77 #define EXTR 6 78 #define SDEP 7 79 #define NONE 8 80 81 /* 82 * REX prefix and bits 83 */ 84 #define REX_B 1 85 #define REX_X 2 86 #define REX_R 4 87 #define REX_W 8 88 #define REX 0x40 89 90 /* 91 * Addressing modes 92 */ 93 #define E 1 /* general effective address */ 94 #define Eind 2 /* indirect address (jump, call) */ 95 #define Ew 3 /* address, word size */ 96 #define Eb 4 /* address, byte size */ 97 #define R 5 /* register, in 'reg' field */ 98 #define Rw 6 /* word register, in 'reg' field */ 99 #define Ri 7 /* register in instruction */ 100 #define S 8 /* segment reg, in 'reg' field */ 101 #define Si 9 /* segment reg, in instruction */ 102 #define A 10 /* accumulator */ 103 #define BX 11 /* (bx) */ 104 #define CL 12 /* cl, for shifts */ 105 #define DX 13 /* dx, for IO */ 106 #define SI 14 /* si */ 107 #define DI 15 /* di */ 108 #define CR 16 /* control register */ 109 #define DR 17 /* debug register */ 110 #define TR 18 /* test register */ 111 #define I 19 /* immediate, unsigned */ 112 #define Is 20 /* immediate, signed */ 113 #define Ib 21 /* byte immediate, unsigned */ 114 #define Ibs 22 /* byte immediate, signed */ 115 #define Iw 23 /* word immediate, unsigned */ 116 #define Ilq 24 /* long/quad immediate, unsigned */ 117 #define O 25 /* direct address */ 118 #define Db 26 /* byte displacement from EIP */ 119 #define Dl 27 /* long displacement from EIP */ 120 #define o1 28 /* constant 1 */ 121 #define o3 29 /* constant 3 */ 122 #define OS 30 /* immediate offset/segment */ 123 #define ST 31 /* FP stack top */ 124 #define STI 32 /* FP stack */ 125 #define X 33 /* extended FP op */ 126 #define XA 34 /* for 'fstcw %ax' */ 127 #define El 35 /* address, long/quad size */ 128 #define Ril 36 /* long register in instruction */ 129 #define Iba 37 /* byte immediate, don't print if 0xa */ 130 #define EL 38 /* address, explicitly long size */ 131 132 struct inst { 133 const char * i_name; /* name */ 134 short i_has_modrm; /* has regmodrm byte */ 135 short i_size; /* operand size */ 136 int i_mode; /* addressing modes */ 137 const void * i_extra; /* pointer to extra opcode table */ 138 }; 139 140 #define op1(x) (x) 141 #define op2(x,y) ((x)|((y)<<8)) 142 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16)) 143 144 struct finst { 145 const char * f_name; /* name for memory instruction */ 146 int f_size; /* size for memory instruction */ 147 int f_rrmode; /* mode for rr instruction */ 148 const void * f_rrname; /* name for rr instruction 149 (or pointer to table) */ 150 }; 151 152 static const char * const db_Grp6[] = { 153 "sldt", 154 "str", 155 "lldt", 156 "ltr", 157 "verr", 158 "verw", 159 "", 160 "" 161 }; 162 163 static const char * const db_Grp7[] = { 164 "sgdt", 165 "sidt", 166 "lgdt", 167 "lidt", 168 "smsw", 169 "", 170 "lmsw", 171 "invlpg" 172 }; 173 174 static const char * const db_Grp7_11_000[] = { 175 "", 176 "vmcall", 177 "vmlaunch", 178 "vmresume", 179 "vmxoff", 180 }; 181 182 static const char * const db_Grp7_11_001[] = { 183 "monitor", 184 "mwait", 185 "clac", 186 "stac", 187 }; 188 189 static const char * const db_Grp7_11_010[] = { 190 "xgetbv", 191 "xsetbv", 192 "", 193 "", 194 "vmfunc", 195 "xend", 196 "xtest", 197 }; 198 199 static const char * const db_Grp7_11_111[] = { 200 "swapgs", 201 "rdtscp", 202 }; 203 204 static const char * const* db_Grp7_11[] = { 205 db_Grp7_11_000, 206 db_Grp7_11_001, 207 db_Grp7_11_010, 208 NULL, 209 NULL, 210 db_Grp7_11_111, 211 }; 212 213 static const char * const db_Grp8[] = { 214 "", 215 "", 216 "", 217 "", 218 "bt", 219 "bts", 220 "btr", 221 "btc" 222 }; 223 224 static const char * const db_Grp9[] = { 225 "", 226 "cmpxchg8b", 227 "", 228 "", 229 "", 230 "", 231 "", 232 "" 233 }; 234 235 static const struct inst db_inst_0f0x[] = { 236 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 }, 237 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 }, 238 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, 239 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, 240 /*04*/ { "", FALSE, NONE, 0, 0 }, 241 /*05*/ { "", FALSE, NONE, 0, 0 }, 242 /*06*/ { "clts", FALSE, NONE, 0, 0 }, 243 /*07*/ { "", FALSE, NONE, 0, 0 }, 244 245 /*08*/ { "invd", FALSE, NONE, 0, 0 }, 246 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 }, 247 /*0a*/ { "", FALSE, NONE, 0, 0 }, 248 /*0b*/ { "", FALSE, NONE, 0, 0 }, 249 /*0c*/ { "", FALSE, NONE, 0, 0 }, 250 /*0d*/ { "", FALSE, NONE, 0, 0 }, 251 /*0e*/ { "", FALSE, NONE, 0, 0 }, 252 /*0f*/ { "", FALSE, NONE, 0, 0 }, 253 }; 254 255 static const struct inst db_inst_0f2x[] = { 256 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 }, 257 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 }, 258 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 }, 259 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 }, 260 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 }, 261 /*25*/ { "", FALSE, NONE, 0, 0 }, 262 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 }, 263 /*27*/ { "", FALSE, NONE, 0, 0 }, 264 265 /*28*/ { "", FALSE, NONE, 0, 0 }, 266 /*29*/ { "", FALSE, NONE, 0, 0 }, 267 /*2a*/ { "", FALSE, NONE, 0, 0 }, 268 /*2b*/ { "", FALSE, NONE, 0, 0 }, 269 /*2c*/ { "", FALSE, NONE, 0, 0 }, 270 /*2d*/ { "", FALSE, NONE, 0, 0 }, 271 /*2e*/ { "", FALSE, NONE, 0, 0 }, 272 /*2f*/ { "", FALSE, NONE, 0, 0 }, 273 }; 274 275 static const struct inst db_inst_0f3x[] = { 276 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 }, 277 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 }, 278 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 }, 279 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 }, 280 /*34*/ { "", FALSE, NONE, 0, 0 }, 281 /*35*/ { "", FALSE, NONE, 0, 0 }, 282 /*36*/ { "", FALSE, NONE, 0, 0 }, 283 /*37*/ { "", FALSE, NONE, 0, 0 }, 284 285 /*38*/ { "", FALSE, NONE, 0, 0 }, 286 /*39*/ { "", FALSE, NONE, 0, 0 }, 287 /*3a*/ { "", FALSE, NONE, 0, 0 }, 288 /*3b*/ { "", FALSE, NONE, 0, 0 }, 289 /*3c*/ { "", FALSE, NONE, 0, 0 }, 290 /*3d*/ { "", FALSE, NONE, 0, 0 }, 291 /*3e*/ { "", FALSE, NONE, 0, 0 }, 292 /*3f*/ { "", FALSE, NONE, 0, 0 }, 293 }; 294 295 static const struct inst db_inst_0f4x[] = { 296 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 }, 297 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 }, 298 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 }, 299 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 }, 300 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 }, 301 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 }, 302 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 }, 303 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 }, 304 305 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 }, 306 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 }, 307 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 }, 308 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 }, 309 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 }, 310 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 }, 311 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 }, 312 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 }, 313 }; 314 315 static const struct inst db_inst_0f8x[] = { 316 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 }, 317 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 }, 318 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 }, 319 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 }, 320 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 }, 321 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 }, 322 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 }, 323 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 }, 324 325 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 }, 326 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 }, 327 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 }, 328 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 }, 329 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 }, 330 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 }, 331 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 }, 332 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 }, 333 }; 334 335 static const struct inst db_inst_0f9x[] = { 336 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 }, 337 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 }, 338 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 }, 339 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 }, 340 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 }, 341 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 }, 342 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 }, 343 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 }, 344 345 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 }, 346 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 }, 347 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 }, 348 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 }, 349 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 }, 350 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 }, 351 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 }, 352 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 }, 353 }; 354 355 static const struct inst db_inst_0fax[] = { 356 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 }, 357 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 }, 358 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 }, 359 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 }, 360 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 }, 361 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 }, 362 /*a6*/ { "", FALSE, NONE, 0, 0 }, 363 /*a7*/ { "", FALSE, NONE, 0, 0 }, 364 365 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 }, 366 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 }, 367 /*aa*/ { "rsm", FALSE, NONE, 0, 0 }, 368 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 }, 369 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 }, 370 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 }, 371 /*a6*/ { "", FALSE, NONE, 0, 0 }, 372 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 }, 373 }; 374 375 static const struct inst db_inst_0fbx[] = { 376 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, 377 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, 378 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, 379 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 }, 380 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 }, 381 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 }, 382 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 }, 383 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 }, 384 385 /*b8*/ { "", FALSE, NONE, 0, 0 }, 386 /*b9*/ { "", FALSE, NONE, 0, 0 }, 387 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 }, 388 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 }, 389 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 }, 390 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 }, 391 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 }, 392 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 }, 393 }; 394 395 static const struct inst db_inst_0fcx[] = { 396 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 }, 397 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 }, 398 /*c2*/ { "", FALSE, NONE, 0, 0 }, 399 /*c3*/ { "", FALSE, NONE, 0, 0 }, 400 /*c4*/ { "", FALSE, NONE, 0, 0 }, 401 /*c5*/ { "", FALSE, NONE, 0, 0 }, 402 /*c6*/ { "", FALSE, NONE, 0, 0 }, 403 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 }, 404 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 405 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 406 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 407 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 408 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 409 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 410 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 411 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 412 }; 413 414 static const struct inst * const db_inst_0f[] = { 415 db_inst_0f0x, 416 0, 417 db_inst_0f2x, 418 db_inst_0f3x, 419 db_inst_0f4x, 420 0, 421 0, 422 0, 423 db_inst_0f8x, 424 db_inst_0f9x, 425 db_inst_0fax, 426 db_inst_0fbx, 427 db_inst_0fcx, 428 0, 429 0, 430 0 431 }; 432 433 static const char * const db_Esc92[] = { 434 "fnop", "", "", "", "", "", "", "" 435 }; 436 static const char * const db_Esc94[] = { 437 "fchs", "fabs", "", "", "ftst", "fxam", "", "" 438 }; 439 static const char * const db_Esc95[] = { 440 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","" 441 }; 442 static const char * const db_Esc96[] = { 443 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp", 444 "fincstp" 445 }; 446 static const char * const db_Esc97[] = { 447 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos" 448 }; 449 450 static const char * const db_Esca5[] = { 451 "", "fucompp","", "", "", "", "", "" 452 }; 453 454 static const char * const db_Escb4[] = { 455 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", "" 456 }; 457 458 static const char * const db_Esce3[] = { 459 "", "fcompp","", "", "", "", "", "" 460 }; 461 462 static const char * const db_Escf4[] = { 463 "fnstsw","", "", "", "", "", "", "" 464 }; 465 466 static const struct finst db_Esc8[] = { 467 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 }, 468 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 }, 469 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 }, 470 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 }, 471 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 }, 472 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 }, 473 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 }, 474 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 }, 475 }; 476 477 static const struct finst db_Esc9[] = { 478 /*0*/ { "fld", SNGL, op1(STI), 0 }, 479 /*1*/ { "", NONE, op1(STI), "fxch" }, 480 /*2*/ { "fst", SNGL, op1(X), db_Esc92 }, 481 /*3*/ { "fstp", SNGL, 0, 0 }, 482 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 }, 483 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 }, 484 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 }, 485 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 }, 486 }; 487 488 static const struct finst db_Esca[] = { 489 /*0*/ { "fiadd", LONG, 0, 0 }, 490 /*1*/ { "fimul", LONG, 0, 0 }, 491 /*2*/ { "ficom", LONG, 0, 0 }, 492 /*3*/ { "ficomp", LONG, 0, 0 }, 493 /*4*/ { "fisub", LONG, 0, 0 }, 494 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 }, 495 /*6*/ { "fidiv", LONG, 0, 0 }, 496 /*7*/ { "fidivr", LONG, 0, 0 } 497 }; 498 499 static const struct finst db_Escb[] = { 500 /*0*/ { "fild", LONG, 0, 0 }, 501 /*1*/ { "", NONE, 0, 0 }, 502 /*2*/ { "fist", LONG, 0, 0 }, 503 /*3*/ { "fistp", LONG, 0, 0 }, 504 /*4*/ { "", WORD, op1(X), db_Escb4 }, 505 /*5*/ { "fld", EXTR, 0, 0 }, 506 /*6*/ { "", WORD, 0, 0 }, 507 /*7*/ { "fstp", EXTR, 0, 0 }, 508 }; 509 510 static const struct finst db_Escc[] = { 511 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 }, 512 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 }, 513 /*2*/ { "fcom", DBLR, 0, 0 }, 514 /*3*/ { "fcomp", DBLR, 0, 0 }, 515 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" }, 516 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" }, 517 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" }, 518 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" }, 519 }; 520 521 static const struct finst db_Escd[] = { 522 /*0*/ { "fld", DBLR, op1(STI), "ffree" }, 523 /*1*/ { "", NONE, 0, 0 }, 524 /*2*/ { "fst", DBLR, op1(STI), 0 }, 525 /*3*/ { "fstp", DBLR, op1(STI), 0 }, 526 /*4*/ { "frstor", NONE, op1(STI), "fucom" }, 527 /*5*/ { "", NONE, op1(STI), "fucomp" }, 528 /*6*/ { "fnsave", NONE, 0, 0 }, 529 /*7*/ { "fnstsw", NONE, 0, 0 }, 530 }; 531 532 static const struct finst db_Esce[] = { 533 /*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" }, 534 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" }, 535 /*2*/ { "ficom", WORD, 0, 0 }, 536 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 }, 537 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" }, 538 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" }, 539 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" }, 540 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" }, 541 }; 542 543 static const struct finst db_Escf[] = { 544 /*0*/ { "fild", WORD, 0, 0 }, 545 /*1*/ { "", NONE, 0, 0 }, 546 /*2*/ { "fist", WORD, 0, 0 }, 547 /*3*/ { "fistp", WORD, 0, 0 }, 548 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 }, 549 /*5*/ { "fild", QUAD, 0, 0 }, 550 /*6*/ { "fbstp", NONE, 0, 0 }, 551 /*7*/ { "fistp", QUAD, 0, 0 }, 552 }; 553 554 static const struct finst * const db_Esc_inst[] = { 555 db_Esc8, db_Esc9, db_Esca, db_Escb, 556 db_Escc, db_Escd, db_Esce, db_Escf 557 }; 558 559 static const char * const db_Grp1[] = { 560 "add", 561 "or", 562 "adc", 563 "sbb", 564 "and", 565 "sub", 566 "xor", 567 "cmp" 568 }; 569 570 static const char * const db_Grp2[] = { 571 "rol", 572 "ror", 573 "rcl", 574 "rcr", 575 "shl", 576 "shr", 577 "shl", 578 "sar" 579 }; 580 581 static const struct inst db_Grp3[] = { 582 { "test", TRUE, NONE, op2(I,E), 0 }, 583 { "test", TRUE, NONE, op2(I,E), 0 }, 584 { "not", TRUE, NONE, op1(E), 0 }, 585 { "neg", TRUE, NONE, op1(E), 0 }, 586 { "mul", TRUE, NONE, op2(E,A), 0 }, 587 { "imul", TRUE, NONE, op2(E,A), 0 }, 588 { "div", TRUE, NONE, op2(E,A), 0 }, 589 { "idiv", TRUE, NONE, op2(E,A), 0 }, 590 }; 591 592 static const struct inst db_Grp4[] = { 593 { "inc", TRUE, BYTE, op1(E), 0 }, 594 { "dec", TRUE, BYTE, op1(E), 0 }, 595 { "", TRUE, NONE, 0, 0 }, 596 { "", TRUE, NONE, 0, 0 }, 597 { "", TRUE, NONE, 0, 0 }, 598 { "", TRUE, NONE, 0, 0 }, 599 { "", TRUE, NONE, 0, 0 }, 600 { "", TRUE, NONE, 0, 0 } 601 }; 602 603 static const struct inst db_Grp5[] = { 604 { "inc", TRUE, LONG, op1(E), 0 }, 605 { "dec", TRUE, LONG, op1(E), 0 }, 606 { "call", TRUE, LONG, op1(Eind),0 }, 607 { "lcall", TRUE, LONG, op1(Eind),0 }, 608 { "jmp", TRUE, LONG, op1(Eind),0 }, 609 { "ljmp", TRUE, LONG, op1(Eind),0 }, 610 { "push", TRUE, LONG, op1(E), 0 }, 611 { "", TRUE, NONE, 0, 0 } 612 }; 613 614 static const struct inst db_inst_table[256] = { 615 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 }, 616 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 }, 617 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 }, 618 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 }, 619 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 }, 620 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 }, 621 /*06*/ { "push", FALSE, NONE, op1(Si), 0 }, 622 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 }, 623 624 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 }, 625 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 }, 626 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 }, 627 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 }, 628 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 }, 629 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 }, 630 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 }, 631 /*0f*/ { "", FALSE, NONE, 0, 0 }, 632 633 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 }, 634 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 }, 635 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 }, 636 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 }, 637 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 }, 638 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 }, 639 /*16*/ { "push", FALSE, NONE, op1(Si), 0 }, 640 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 }, 641 642 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 }, 643 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 }, 644 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 }, 645 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 }, 646 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 }, 647 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 }, 648 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 }, 649 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 }, 650 651 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 }, 652 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 }, 653 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 }, 654 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 }, 655 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 }, 656 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 }, 657 /*26*/ { "", FALSE, NONE, 0, 0 }, 658 /*27*/ { "daa", FALSE, NONE, 0, 0 }, 659 660 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 }, 661 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 }, 662 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 }, 663 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 }, 664 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 }, 665 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 }, 666 /*2e*/ { "", FALSE, NONE, 0, 0 }, 667 /*2f*/ { "das", FALSE, NONE, 0, 0 }, 668 669 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 }, 670 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 }, 671 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 }, 672 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 }, 673 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 }, 674 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 }, 675 /*36*/ { "", FALSE, NONE, 0, 0 }, 676 /*37*/ { "aaa", FALSE, NONE, 0, 0 }, 677 678 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 }, 679 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 }, 680 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 }, 681 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 }, 682 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 }, 683 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, 684 /*3e*/ { "", FALSE, NONE, 0, 0 }, 685 /*3f*/ { "aas", FALSE, NONE, 0, 0 }, 686 687 /*40*/ { "rex", FALSE, NONE, 0, 0 }, 688 /*41*/ { "rex.b", FALSE, NONE, 0, 0 }, 689 /*42*/ { "rex.x", FALSE, NONE, 0, 0 }, 690 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 }, 691 /*44*/ { "rex.r", FALSE, NONE, 0, 0 }, 692 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 }, 693 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 }, 694 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 }, 695 696 /*48*/ { "rex.w", FALSE, NONE, 0, 0 }, 697 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 }, 698 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 }, 699 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 }, 700 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 }, 701 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 }, 702 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 }, 703 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 }, 704 705 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 }, 706 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 }, 707 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 }, 708 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 }, 709 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 }, 710 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 }, 711 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 }, 712 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 }, 713 714 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 715 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 716 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 717 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 718 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 719 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 720 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 721 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 722 723 /*60*/ { "pusha", FALSE, LONG, 0, 0 }, 724 /*61*/ { "popa", FALSE, LONG, 0, 0 }, 725 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 }, 726 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 }, 727 728 /*64*/ { "", FALSE, NONE, 0, 0 }, 729 /*65*/ { "", FALSE, NONE, 0, 0 }, 730 /*66*/ { "", FALSE, NONE, 0, 0 }, 731 /*67*/ { "", FALSE, NONE, 0, 0 }, 732 733 /*68*/ { "push", FALSE, LONG, op1(I), 0 }, 734 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 }, 735 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 }, 736 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 }, 737 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 }, 738 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 }, 739 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 }, 740 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 }, 741 742 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 }, 743 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 }, 744 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 }, 745 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 }, 746 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 }, 747 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 }, 748 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 }, 749 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 }, 750 751 /*78*/ { "js", FALSE, NONE, op1(Db), 0 }, 752 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 }, 753 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 }, 754 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 }, 755 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 }, 756 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 }, 757 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 }, 758 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 }, 759 760 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 761 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 }, 762 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 763 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 }, 764 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 }, 765 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 }, 766 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 }, 767 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 }, 768 769 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 }, 770 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 }, 771 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 }, 772 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 }, 773 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 }, 774 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 }, 775 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 }, 776 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 }, 777 778 /*90*/ { "nop", FALSE, NONE, 0, 0 }, 779 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 780 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 781 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 782 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 783 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 784 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 785 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 786 787 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */ 788 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */ 789 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 }, 790 /*9b*/ { "wait", FALSE, NONE, 0, 0 }, 791 /*9c*/ { "pushf", FALSE, LONG, 0, 0 }, 792 /*9d*/ { "popf", FALSE, LONG, 0, 0 }, 793 /*9e*/ { "sahf", FALSE, NONE, 0, 0 }, 794 /*9f*/ { "lahf", FALSE, NONE, 0, 0 }, 795 796 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 }, 797 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 }, 798 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 }, 799 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 }, 800 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 }, 801 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 }, 802 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 }, 803 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 }, 804 805 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 }, 806 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 }, 807 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 }, 808 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 }, 809 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 }, 810 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 }, 811 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 }, 812 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 }, 813 814 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 815 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 816 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 817 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 818 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 819 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 820 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 821 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 822 823 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 824 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 825 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 826 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 827 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 828 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 829 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 830 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 831 832 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 }, 833 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 }, 834 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 }, 835 /*c3*/ { "ret", FALSE, NONE, 0, 0 }, 836 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 }, 837 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 }, 838 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 }, 839 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 }, 840 841 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 }, 842 /*c9*/ { "leave", FALSE, NONE, 0, 0 }, 843 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 }, 844 /*cb*/ { "lret", FALSE, NONE, 0, 0 }, 845 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 }, 846 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 }, 847 /*ce*/ { "into", FALSE, NONE, 0, 0 }, 848 /*cf*/ { "iret", FALSE, NONE, 0, 0 }, 849 850 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 }, 851 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 }, 852 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 }, 853 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 }, 854 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 }, 855 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 }, 856 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 }, 857 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, 858 859 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 }, 860 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 }, 861 /*da*/ { "", TRUE, NONE, 0, db_Esca }, 862 /*db*/ { "", TRUE, NONE, 0, db_Escb }, 863 /*dc*/ { "", TRUE, NONE, 0, db_Escc }, 864 /*dd*/ { "", TRUE, NONE, 0, db_Escd }, 865 /*de*/ { "", TRUE, NONE, 0, db_Esce }, 866 /*df*/ { "", TRUE, NONE, 0, db_Escf }, 867 868 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, 869 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, 870 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, 871 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" }, 872 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 }, 873 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 }, 874 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 }, 875 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 }, 876 877 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 }, 878 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 }, 879 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 }, 880 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 }, 881 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 }, 882 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 }, 883 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 }, 884 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 }, 885 886 /*f0*/ { "", FALSE, NONE, 0, 0 }, 887 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 }, 888 /*f2*/ { "", FALSE, NONE, 0, 0 }, 889 /*f3*/ { "", FALSE, NONE, 0, 0 }, 890 /*f4*/ { "hlt", FALSE, NONE, 0, 0 }, 891 /*f5*/ { "cmc", FALSE, NONE, 0, 0 }, 892 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 }, 893 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 }, 894 895 /*f8*/ { "clc", FALSE, NONE, 0, 0 }, 896 /*f9*/ { "stc", FALSE, NONE, 0, 0 }, 897 /*fa*/ { "cli", FALSE, NONE, 0, 0 }, 898 /*fb*/ { "sti", FALSE, NONE, 0, 0 }, 899 /*fc*/ { "cld", FALSE, NONE, 0, 0 }, 900 /*fd*/ { "std", FALSE, NONE, 0, 0 }, 901 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 }, 902 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 }, 903 }; 904 905 static const struct inst db_bad_inst = { "???", FALSE, NONE, 0, 0 }; 906 907 #define f_mod(rex, byte) ((byte)>>6) 908 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0)) 909 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 910 911 #define sib_ss(rex, byte) ((byte)>>6) 912 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0)) 913 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 914 915 struct i_addr { 916 int is_reg; /* if reg, reg number is in 'disp' */ 917 int disp; 918 const char * base; 919 const char * index; 920 int ss; 921 }; 922 923 static const char * const db_reg[2][4][16] = { 924 925 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh", 926 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 927 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 928 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 929 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 930 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 931 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 932 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}, 933 934 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil", 935 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 936 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 937 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 938 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 939 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 940 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 941 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }} 942 }; 943 944 static const char * const db_seg_reg[8] = { 945 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", "" 946 }; 947 948 /* 949 * lengths for size attributes 950 */ 951 static const int db_lengths[] = { 952 1, /* BYTE */ 953 2, /* WORD */ 954 4, /* LONG */ 955 8, /* QUAD */ 956 4, /* SNGL */ 957 8, /* DBLR */ 958 10, /* EXTR */ 959 }; 960 961 #define get_value_inc(result, loc, size, is_signed) \ 962 result = db_get_value((loc), (size), (is_signed)); \ 963 (loc) += (size); 964 965 static db_addr_t 966 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, 967 int size, const char *seg); 968 static void db_print_address(const char *seg, int size, int rex, 969 struct i_addr *addrp); 970 static db_addr_t 971 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, 972 struct i_addr *addrp); 973 974 /* 975 * Read address at location and return updated location. 976 */ 977 static db_addr_t 978 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, 979 struct i_addr *addrp) 980 { 981 int mod, rm, sib, index, disp, size, have_sib; 982 983 mod = f_mod(rex, regmodrm); 984 rm = f_rm(rex, regmodrm); 985 986 if (mod == 3) { 987 addrp->is_reg = TRUE; 988 addrp->disp = rm; 989 return (loc); 990 } 991 addrp->is_reg = FALSE; 992 addrp->index = NULL; 993 994 if (short_addr) 995 size = LONG; 996 else 997 size = QUAD; 998 999 if ((rm & 0x7) == 4) { 1000 get_value_inc(sib, loc, 1, FALSE); 1001 rm = sib_base(rex, sib); 1002 index = sib_index(rex, sib); 1003 if (index != 4) 1004 addrp->index = db_reg[1][size][index]; 1005 addrp->ss = sib_ss(rex, sib); 1006 have_sib = 1; 1007 } else 1008 have_sib = 0; 1009 1010 switch (mod) { 1011 case 0: 1012 if (rm == 5) { 1013 get_value_inc(addrp->disp, loc, 4, FALSE); 1014 if (have_sib) 1015 addrp->base = NULL; 1016 else if (short_addr) 1017 addrp->base = "%eip"; 1018 else 1019 addrp->base = "%rip"; 1020 } else { 1021 addrp->disp = 0; 1022 addrp->base = db_reg[1][size][rm]; 1023 } 1024 break; 1025 1026 case 1: 1027 get_value_inc(disp, loc, 1, TRUE); 1028 addrp->disp = disp; 1029 addrp->base = db_reg[1][size][rm]; 1030 break; 1031 1032 case 2: 1033 get_value_inc(disp, loc, 4, FALSE); 1034 addrp->disp = disp; 1035 addrp->base = db_reg[1][size][rm]; 1036 break; 1037 } 1038 return (loc); 1039 } 1040 1041 static void 1042 db_print_address(const char *seg, int size, int rex, struct i_addr *addrp) 1043 { 1044 if (addrp->is_reg) { 1045 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]); 1046 return; 1047 } 1048 1049 if (seg) { 1050 db_printf("%s:", seg); 1051 } 1052 1053 if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL)) 1054 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY); 1055 if (addrp->base != NULL || addrp->index != NULL) { 1056 db_printf("("); 1057 if (addrp->base) 1058 db_printf("%s", addrp->base); 1059 if (addrp->index) 1060 db_printf(",%s,%d", addrp->index, 1<<addrp->ss); 1061 db_printf(")"); 1062 } 1063 } 1064 1065 /* 1066 * Disassemble floating-point ("escape") instruction 1067 * and return updated location. 1068 */ 1069 static db_addr_t 1070 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, int size, 1071 const char *seg) 1072 { 1073 int regmodrm; 1074 const struct finst * fp; 1075 int mod; 1076 struct i_addr address = { 0 }; 1077 const char * name; 1078 1079 get_value_inc(regmodrm, loc, 1, FALSE); 1080 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)]; 1081 mod = f_mod(rex, regmodrm); 1082 if (mod != 3) { 1083 if (*fp->f_name == '\0') { 1084 db_printf("<bad instruction>"); 1085 return (loc); 1086 } 1087 /* 1088 * Normal address modes. 1089 */ 1090 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1091 db_printf("%s", fp->f_name); 1092 switch(fp->f_size) { 1093 case SNGL: 1094 db_printf("s"); 1095 break; 1096 case DBLR: 1097 db_printf("l"); 1098 break; 1099 case EXTR: 1100 db_printf("t"); 1101 break; 1102 case WORD: 1103 db_printf("s"); 1104 break; 1105 case LONG: 1106 db_printf("l"); 1107 break; 1108 case QUAD: 1109 db_printf("q"); 1110 break; 1111 default: 1112 break; 1113 } 1114 db_printf("\t"); 1115 db_print_address(seg, BYTE, rex, &address); 1116 } 1117 else { 1118 /* 1119 * 'reg-reg' - special formats 1120 */ 1121 switch (fp->f_rrmode) { 1122 case op2(ST,STI): 1123 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1124 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm)); 1125 break; 1126 case op2(STI,ST): 1127 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1128 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm)); 1129 break; 1130 case op1(STI): 1131 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1132 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm)); 1133 break; 1134 case op1(X): 1135 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1136 if (*name == '\0') 1137 goto bad; 1138 db_printf("%s", name); 1139 break; 1140 case op1(XA): 1141 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1142 if (*name == '\0') 1143 goto bad; 1144 db_printf("%s\t%%ax", name); 1145 break; 1146 default: 1147 bad: 1148 db_printf("<bad instruction>"); 1149 break; 1150 } 1151 } 1152 1153 return (loc); 1154 } 1155 1156 /* 1157 * Disassemble instruction at 'loc'. 'altfmt' specifies an 1158 * (optional) alternate format. Return address of start of 1159 * next instruction. 1160 */ 1161 db_addr_t 1162 db_disasm(db_addr_t loc, boolean_t altfmt, db_regs_t *dummy) 1163 { 1164 int inst; 1165 int size; 1166 int short_addr; 1167 const char * seg; 1168 const struct inst * ip; 1169 const char * i_name; 1170 int i_size; 1171 int i_mode; 1172 int rex = 0; 1173 int regmodrm = 0; 1174 boolean_t first; 1175 int displ; 1176 int prefix; 1177 int imm; 1178 int imm2; 1179 long imm64; 1180 int len; 1181 struct i_addr address = { 0 }; 1182 1183 get_value_inc(inst, loc, 1, FALSE); 1184 short_addr = FALSE; 1185 size = LONG; 1186 seg = NULL; 1187 1188 /* 1189 * Get prefixes 1190 */ 1191 prefix = TRUE; 1192 do { 1193 switch (inst) { 1194 case 0x66: /* data16 */ 1195 size = WORD; 1196 break; 1197 case 0x67: 1198 short_addr = TRUE; 1199 break; 1200 case 0x26: 1201 seg = "%es"; 1202 break; 1203 case 0x36: 1204 seg = "%ss"; 1205 break; 1206 case 0x2e: 1207 seg = "%cs"; 1208 break; 1209 case 0x3e: 1210 seg = "%ds"; 1211 break; 1212 case 0x64: 1213 seg = "%fs"; 1214 break; 1215 case 0x65: 1216 seg = "%gs"; 1217 break; 1218 case 0xf0: 1219 db_printf("lock "); 1220 break; 1221 case 0xf2: 1222 db_printf("repne "); 1223 break; 1224 case 0xf3: 1225 db_printf("repe "); /* XXX repe VS rep */ 1226 break; 1227 default: 1228 prefix = FALSE; 1229 break; 1230 } 1231 if (inst >= 0x40 && inst < 0x50) { 1232 rex = inst; 1233 prefix = TRUE; 1234 } 1235 if (prefix) { 1236 get_value_inc(inst, loc, 1, FALSE); 1237 } 1238 } while (prefix); 1239 1240 if (inst >= 0xd8 && inst <= 0xdf) { 1241 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg); 1242 db_printf("\n"); 1243 return (loc); 1244 } 1245 1246 if (inst == 0x0f) { 1247 get_value_inc(inst, loc, 1, FALSE); 1248 ip = db_inst_0f[inst>>4]; 1249 if (ip == NULL) { 1250 ip = &db_bad_inst; 1251 } 1252 else { 1253 ip = &ip[inst&0xf]; 1254 } 1255 } 1256 else 1257 ip = &db_inst_table[inst]; 1258 1259 if (ip->i_has_modrm) { 1260 get_value_inc(regmodrm, loc, 1, FALSE); 1261 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1262 } 1263 1264 i_name = ip->i_name; 1265 i_size = ip->i_size; 1266 i_mode = ip->i_mode; 1267 1268 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 || 1269 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp8 || 1270 ip->i_extra == db_Grp9) { 1271 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; 1272 } 1273 else if (ip->i_extra == db_Grp7) { 1274 if((regmodrm & 0xC0) == 0xC0) { 1275 i_name = db_Grp7_11[f_reg(rex, regmodrm)][regmodrm &0x7]; 1276 i_mode = 0; 1277 } 1278 else { 1279 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; 1280 } 1281 } 1282 else if (ip->i_extra == db_Grp3) { 1283 ip = ip->i_extra; 1284 ip = &ip[f_reg(rex, 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(rex, regmodrm)]; 1291 i_name = ip->i_name; 1292 i_mode = ip->i_mode; 1293 i_size = ip->i_size; 1294 } 1295 1296 if (i_size == SDEP) { 1297 if (size == WORD) 1298 db_printf("%s", i_name); 1299 else 1300 db_printf("%s", (const char *)ip->i_extra); 1301 } 1302 else { 1303 db_printf("%s", i_name); 1304 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) { 1305 i_size = NONE; 1306 db_printf("q"); 1307 } 1308 if (i_size != NONE) { 1309 if (i_size == BYTE) { 1310 db_printf("b"); 1311 size = BYTE; 1312 } 1313 else if (i_size == WORD) { 1314 db_printf("w"); 1315 size = WORD; 1316 } 1317 else if (size == WORD) 1318 db_printf("w"); 1319 else { 1320 if (rex & REX_W) 1321 db_printf("q"); 1322 else 1323 db_printf("l"); 1324 } 1325 } 1326 } 1327 db_printf("\t"); 1328 for (first = TRUE; 1329 i_mode != 0; 1330 i_mode >>= 8, first = FALSE) 1331 { 1332 char tbuf[24]; 1333 1334 if (!first) 1335 db_printf(","); 1336 1337 switch (i_mode & 0xFF) { 1338 1339 case E: 1340 db_print_address(seg, size, rex, &address); 1341 break; 1342 1343 case Eind: 1344 db_printf("*"); 1345 db_print_address(seg, size, rex, &address); 1346 break; 1347 1348 case El: 1349 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address); 1350 break; 1351 1352 case EL: 1353 db_print_address(seg, LONG, 0, &address); 1354 break; 1355 1356 case Ew: 1357 db_print_address(seg, WORD, rex, &address); 1358 break; 1359 1360 case Eb: 1361 db_print_address(seg, BYTE, rex, &address); 1362 break; 1363 1364 case R: 1365 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]); 1366 break; 1367 1368 case Rw: 1369 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]); 1370 break; 1371 1372 case Ri: 1373 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]); 1374 break; 1375 1376 case Ril: 1377 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]); 1378 break; 1379 1380 case S: 1381 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]); 1382 break; 1383 1384 case Si: 1385 db_printf("%s", db_seg_reg[f_reg(rex, inst)]); 1386 break; 1387 1388 case A: 1389 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */ 1390 break; 1391 1392 case BX: 1393 if (seg) 1394 db_printf("%s:", seg); 1395 db_printf("(%s)", short_addr ? "%bx" : "%ebx"); 1396 break; 1397 1398 case CL: 1399 db_printf("%%cl"); 1400 break; 1401 1402 case DX: 1403 db_printf("%%dx"); 1404 break; 1405 1406 case SI: 1407 if (seg) 1408 db_printf("%s:", seg); 1409 db_printf("(%s)", short_addr ? "%si" : "%rsi"); 1410 break; 1411 1412 case DI: 1413 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi"); 1414 break; 1415 1416 case CR: 1417 db_printf("%%cr%d", f_reg(rex, regmodrm)); 1418 break; 1419 1420 case DR: 1421 db_printf("%%dr%d", f_reg(rex, regmodrm)); 1422 break; 1423 1424 case TR: 1425 db_printf("%%tr%d", f_reg(rex, regmodrm)); 1426 break; 1427 1428 case I: 1429 len = db_lengths[size]; 1430 get_value_inc(imm, loc, len, FALSE); /* unsigned */ 1431 db_format_radix(tbuf, 24, (unsigned int)imm, true); 1432 db_printf("$%s", tbuf); 1433 break; 1434 1435 case Is: 1436 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1437 get_value_inc(imm, loc, len, TRUE); /* signed */ 1438 db_format_radix(tbuf, 24, imm, TRUE); 1439 db_printf("$%s", tbuf); 1440 break; 1441 1442 case Ib: 1443 get_value_inc(imm, loc, 1, FALSE); /* unsigned */ 1444 db_format_radix(tbuf, 24, (unsigned int)imm, TRUE); 1445 db_printf("$%s", tbuf); 1446 break; 1447 1448 case Iba: 1449 get_value_inc(imm, loc, 1, FALSE); 1450 if (imm != 0x0a) { 1451 db_format_radix(tbuf, 24, (unsigned int)imm, TRUE); 1452 db_printf("$%s", tbuf); 1453 } 1454 break; 1455 1456 case Ibs: 1457 get_value_inc(imm, loc, 1, TRUE); /* signed */ 1458 if (size == WORD) 1459 imm &= 0xFFFF; 1460 db_format_radix(tbuf, 24, imm, TRUE); 1461 db_printf("$%s", tbuf); 1462 break; 1463 1464 case Iw: 1465 get_value_inc(imm, loc, 2, FALSE); /* unsigned */ 1466 db_format_radix(tbuf, 24, (unsigned int)imm, TRUE); 1467 db_printf("$%s", tbuf); 1468 break; 1469 1470 case Ilq: 1471 len = db_lengths[rex & REX_W ? QUAD : LONG]; 1472 get_value_inc(imm64, loc, len, FALSE); 1473 db_format_radix(tbuf, 24, imm64, TRUE); 1474 db_printf("$%s", tbuf); 1475 break; 1476 1477 case O: 1478 len = (short_addr ? 2 : 4); 1479 get_value_inc(displ, loc, len, FALSE); 1480 if (seg) { 1481 db_format_radix(tbuf, 24, displ, TRUE); 1482 db_printf("%s:%s", seg, tbuf); 1483 } 1484 else 1485 db_printsym((db_addr_t)displ, DB_STGY_ANY); 1486 break; 1487 1488 case Db: 1489 get_value_inc(displ, loc, 1, TRUE); 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 Dl: 1497 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1498 get_value_inc(displ, loc, len, FALSE); 1499 displ += loc; 1500 if (size == WORD) 1501 displ &= 0xFFFF; 1502 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1503 break; 1504 1505 case o1: 1506 db_printf("$1"); 1507 break; 1508 1509 case o3: 1510 db_printf("$3"); 1511 break; 1512 1513 case OS: 1514 len = db_lengths[size]; 1515 get_value_inc(imm, loc, len, FALSE); /* offset */ 1516 get_value_inc(imm2, loc, 2, FALSE); /* segment */ 1517 db_format_radix(tbuf, 24, (unsigned int)imm, TRUE); 1518 db_printf("$%s", tbuf); 1519 db_format_radix(tbuf, 24, (unsigned int)imm2, TRUE); 1520 db_printf(",%s", tbuf); 1521 break; 1522 } 1523 } 1524 db_printf("\n"); 1525 return (loc); 1526 } 1527