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_sym.h> 66 67 /* 68 * Size attributes 69 */ 70 #define BYTE 0 71 #define WORD 1 72 #define LONG 2 73 #define QUAD 3 74 #define SNGL 4 75 #define DBLR 5 76 #define EXTR 6 77 #define SDEP 7 78 #define NONE 8 79 80 /* 81 * REX prefix and bits 82 */ 83 #define REX_B 1 84 #define REX_X 2 85 #define REX_R 4 86 #define REX_W 8 87 #define REX 0x40 88 89 /* 90 * Addressing modes 91 */ 92 #define E 1 /* general effective address */ 93 #define Eind 2 /* indirect address (jump, call) */ 94 #define Ew 3 /* address, word size */ 95 #define Eb 4 /* address, byte size */ 96 #define R 5 /* register, in 'reg' field */ 97 #define Rw 6 /* word register, in 'reg' field */ 98 #define Ri 7 /* register in instruction */ 99 #define S 8 /* segment reg, in 'reg' field */ 100 #define Si 9 /* segment reg, in instruction */ 101 #define A 10 /* accumulator */ 102 #define BX 11 /* (bx) */ 103 #define CL 12 /* cl, for shifts */ 104 #define DX 13 /* dx, for IO */ 105 #define SI 14 /* si */ 106 #define DI 15 /* di */ 107 #define CR 16 /* control register */ 108 #define DR 17 /* debug register */ 109 #define TR 18 /* test register */ 110 #define I 19 /* immediate, unsigned */ 111 #define Is 20 /* immediate, signed */ 112 #define Ib 21 /* byte immediate, unsigned */ 113 #define Ibs 22 /* byte immediate, signed */ 114 #define Iw 23 /* word immediate, unsigned */ 115 #define Ilq 24 /* long/quad immediate, unsigned */ 116 #define O 25 /* direct address */ 117 #define Db 26 /* byte displacement from EIP */ 118 #define Dl 27 /* long displacement from EIP */ 119 #define o1 28 /* constant 1 */ 120 #define o3 29 /* constant 3 */ 121 #define OS 30 /* immediate offset/segment */ 122 #define ST 31 /* FP stack top */ 123 #define STI 32 /* FP stack */ 124 #define X 33 /* extended FP op */ 125 #define XA 34 /* for 'fstcw %ax' */ 126 #define El 35 /* address, long/quad size */ 127 #define Ril 36 /* long register in instruction */ 128 #define Iba 37 /* byte immediate, don't print if 0xa */ 129 #define EL 38 /* address, explicitly long size */ 130 131 struct inst { 132 const char * i_name; /* name */ 133 short i_has_modrm; /* has regmodrm byte */ 134 short i_size; /* operand size */ 135 int i_mode; /* addressing modes */ 136 const void * i_extra; /* pointer to extra opcode table */ 137 }; 138 139 #define op1(x) (x) 140 #define op2(x,y) ((x)|((y)<<8)) 141 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16)) 142 143 struct finst { 144 const char * f_name; /* name for memory instruction */ 145 int f_size; /* size for memory instruction */ 146 int f_rrmode; /* mode for rr instruction */ 147 const void * f_rrname; /* name for rr instruction 148 (or pointer to table) */ 149 }; 150 151 static const char * const db_Grp6[] = { 152 "sldt", 153 "str", 154 "lldt", 155 "ltr", 156 "verr", 157 "verw", 158 "", 159 "" 160 }; 161 162 static const char * const db_Grp7[] = { 163 "sgdt", 164 "sidt", 165 "lgdt", 166 "lidt", 167 "smsw", 168 "", 169 "lmsw", 170 "invlpg" 171 }; 172 173 static const char * const db_Grp7_11_000[] = { 174 "", 175 "vmcall", 176 "vmlaunch", 177 "vmresume", 178 "vmxoff", 179 }; 180 181 static const char * const db_Grp7_11_001[] = { 182 "monitor", 183 "mwait", 184 "clac", 185 "stac", 186 }; 187 188 static const char * const db_Grp7_11_010[] = { 189 "xgetbv", 190 "xsetbv", 191 "", 192 "", 193 "vmfunc", 194 "xend", 195 "xtest", 196 }; 197 198 static const char * const db_Grp7_11_111[] = { 199 "swapgs", 200 "rdtscp", 201 }; 202 203 static const char * const* db_Grp7_11[] = { 204 db_Grp7_11_000, 205 db_Grp7_11_001, 206 db_Grp7_11_010, 207 NULL, 208 NULL, 209 db_Grp7_11_111, 210 }; 211 212 static const char * const db_Grp8[] = { 213 "", 214 "", 215 "", 216 "", 217 "bt", 218 "bts", 219 "btr", 220 "btc" 221 }; 222 223 static const char * const db_Grp9[] = { 224 "", 225 "cmpxchg8b", 226 "", 227 "", 228 "", 229 "", 230 "", 231 "" 232 }; 233 234 static const struct inst db_inst_0f0x[] = { 235 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 }, 236 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 }, 237 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, 238 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, 239 /*04*/ { "", FALSE, NONE, 0, 0 }, 240 /*05*/ { "", FALSE, NONE, 0, 0 }, 241 /*06*/ { "clts", FALSE, NONE, 0, 0 }, 242 /*07*/ { "", FALSE, NONE, 0, 0 }, 243 244 /*08*/ { "invd", FALSE, NONE, 0, 0 }, 245 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 }, 246 /*0a*/ { "", FALSE, NONE, 0, 0 }, 247 /*0b*/ { "", FALSE, NONE, 0, 0 }, 248 /*0c*/ { "", FALSE, NONE, 0, 0 }, 249 /*0d*/ { "", FALSE, NONE, 0, 0 }, 250 /*0e*/ { "", FALSE, NONE, 0, 0 }, 251 /*0f*/ { "", FALSE, NONE, 0, 0 }, 252 }; 253 254 static const struct inst db_inst_0f2x[] = { 255 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 }, 256 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 }, 257 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 }, 258 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 }, 259 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 }, 260 /*25*/ { "", FALSE, NONE, 0, 0 }, 261 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 }, 262 /*27*/ { "", FALSE, NONE, 0, 0 }, 263 264 /*28*/ { "", FALSE, NONE, 0, 0 }, 265 /*29*/ { "", FALSE, NONE, 0, 0 }, 266 /*2a*/ { "", FALSE, NONE, 0, 0 }, 267 /*2b*/ { "", FALSE, NONE, 0, 0 }, 268 /*2c*/ { "", FALSE, NONE, 0, 0 }, 269 /*2d*/ { "", FALSE, NONE, 0, 0 }, 270 /*2e*/ { "", FALSE, NONE, 0, 0 }, 271 /*2f*/ { "", FALSE, NONE, 0, 0 }, 272 }; 273 274 static const struct inst db_inst_0f3x[] = { 275 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 }, 276 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 }, 277 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 }, 278 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 }, 279 /*34*/ { "", FALSE, NONE, 0, 0 }, 280 /*35*/ { "", FALSE, NONE, 0, 0 }, 281 /*36*/ { "", FALSE, NONE, 0, 0 }, 282 /*37*/ { "", FALSE, NONE, 0, 0 }, 283 284 /*38*/ { "", FALSE, NONE, 0, 0 }, 285 /*39*/ { "", FALSE, NONE, 0, 0 }, 286 /*3a*/ { "", FALSE, NONE, 0, 0 }, 287 /*3b*/ { "", FALSE, NONE, 0, 0 }, 288 /*3c*/ { "", FALSE, NONE, 0, 0 }, 289 /*3d*/ { "", FALSE, NONE, 0, 0 }, 290 /*3e*/ { "", FALSE, NONE, 0, 0 }, 291 /*3f*/ { "", FALSE, NONE, 0, 0 }, 292 }; 293 294 static const struct inst db_inst_0f4x[] = { 295 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 }, 296 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 }, 297 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 }, 298 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 }, 299 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 }, 300 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 }, 301 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 }, 302 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 }, 303 304 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 }, 305 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 }, 306 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 }, 307 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 }, 308 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 }, 309 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 }, 310 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 }, 311 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 }, 312 }; 313 314 static const struct inst db_inst_0f8x[] = { 315 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 }, 316 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 }, 317 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 }, 318 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 }, 319 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 }, 320 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 }, 321 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 }, 322 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 }, 323 324 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 }, 325 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 }, 326 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 }, 327 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 }, 328 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 }, 329 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 }, 330 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 }, 331 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 }, 332 }; 333 334 static const struct inst db_inst_0f9x[] = { 335 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 }, 336 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 }, 337 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 }, 338 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 }, 339 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 }, 340 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 }, 341 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 }, 342 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 }, 343 344 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 }, 345 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 }, 346 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 }, 347 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 }, 348 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 }, 349 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 }, 350 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 }, 351 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 }, 352 }; 353 354 static const struct inst db_inst_0fax[] = { 355 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 }, 356 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 }, 357 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 }, 358 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 }, 359 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 }, 360 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 }, 361 /*a6*/ { "", FALSE, NONE, 0, 0 }, 362 /*a7*/ { "", FALSE, NONE, 0, 0 }, 363 364 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 }, 365 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 }, 366 /*aa*/ { "rsm", FALSE, NONE, 0, 0 }, 367 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 }, 368 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 }, 369 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 }, 370 /*a6*/ { "", FALSE, NONE, 0, 0 }, 371 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 }, 372 }; 373 374 static const struct inst db_inst_0fbx[] = { 375 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, 376 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, 377 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, 378 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 }, 379 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 }, 380 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 }, 381 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 }, 382 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 }, 383 384 /*b8*/ { "", FALSE, NONE, 0, 0 }, 385 /*b9*/ { "", FALSE, NONE, 0, 0 }, 386 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 }, 387 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 }, 388 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 }, 389 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 }, 390 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 }, 391 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 }, 392 }; 393 394 static const struct inst db_inst_0fcx[] = { 395 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 }, 396 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 }, 397 /*c2*/ { "", FALSE, NONE, 0, 0 }, 398 /*c3*/ { "", FALSE, NONE, 0, 0 }, 399 /*c4*/ { "", FALSE, NONE, 0, 0 }, 400 /*c5*/ { "", FALSE, NONE, 0, 0 }, 401 /*c6*/ { "", FALSE, NONE, 0, 0 }, 402 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 }, 403 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 404 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 405 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 406 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 407 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 408 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 409 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 410 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 411 }; 412 413 static const struct inst * const db_inst_0f[] = { 414 db_inst_0f0x, 415 0, 416 db_inst_0f2x, 417 db_inst_0f3x, 418 db_inst_0f4x, 419 0, 420 0, 421 0, 422 db_inst_0f8x, 423 db_inst_0f9x, 424 db_inst_0fax, 425 db_inst_0fbx, 426 db_inst_0fcx, 427 0, 428 0, 429 0 430 }; 431 432 static const char * const db_Esc92[] = { 433 "fnop", "", "", "", "", "", "", "" 434 }; 435 static const char * const db_Esc94[] = { 436 "fchs", "fabs", "", "", "ftst", "fxam", "", "" 437 }; 438 static const char * const db_Esc95[] = { 439 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","" 440 }; 441 static const char * const db_Esc96[] = { 442 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp", 443 "fincstp" 444 }; 445 static const char * const db_Esc97[] = { 446 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos" 447 }; 448 449 static const char * const db_Esca5[] = { 450 "", "fucompp","", "", "", "", "", "" 451 }; 452 453 static const char * const db_Escb4[] = { 454 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", "" 455 }; 456 457 static const char * const db_Esce3[] = { 458 "", "fcompp","", "", "", "", "", "" 459 }; 460 461 static const char * const db_Escf4[] = { 462 "fnstsw","", "", "", "", "", "", "" 463 }; 464 465 static const struct finst db_Esc8[] = { 466 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 }, 467 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 }, 468 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 }, 469 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 }, 470 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 }, 471 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 }, 472 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 }, 473 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 }, 474 }; 475 476 static const struct finst db_Esc9[] = { 477 /*0*/ { "fld", SNGL, op1(STI), 0 }, 478 /*1*/ { "", NONE, op1(STI), "fxch" }, 479 /*2*/ { "fst", SNGL, op1(X), db_Esc92 }, 480 /*3*/ { "fstp", SNGL, 0, 0 }, 481 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 }, 482 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 }, 483 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 }, 484 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 }, 485 }; 486 487 static const struct finst db_Esca[] = { 488 /*0*/ { "fiadd", LONG, 0, 0 }, 489 /*1*/ { "fimul", LONG, 0, 0 }, 490 /*2*/ { "ficom", LONG, 0, 0 }, 491 /*3*/ { "ficomp", LONG, 0, 0 }, 492 /*4*/ { "fisub", LONG, 0, 0 }, 493 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 }, 494 /*6*/ { "fidiv", LONG, 0, 0 }, 495 /*7*/ { "fidivr", LONG, 0, 0 } 496 }; 497 498 static const struct finst db_Escb[] = { 499 /*0*/ { "fild", LONG, 0, 0 }, 500 /*1*/ { "", NONE, 0, 0 }, 501 /*2*/ { "fist", LONG, 0, 0 }, 502 /*3*/ { "fistp", LONG, 0, 0 }, 503 /*4*/ { "", WORD, op1(X), db_Escb4 }, 504 /*5*/ { "fld", EXTR, 0, 0 }, 505 /*6*/ { "", WORD, 0, 0 }, 506 /*7*/ { "fstp", EXTR, 0, 0 }, 507 }; 508 509 static const struct finst db_Escc[] = { 510 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 }, 511 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 }, 512 /*2*/ { "fcom", DBLR, 0, 0 }, 513 /*3*/ { "fcomp", DBLR, 0, 0 }, 514 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" }, 515 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" }, 516 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" }, 517 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" }, 518 }; 519 520 static const struct finst db_Escd[] = { 521 /*0*/ { "fld", DBLR, op1(STI), "ffree" }, 522 /*1*/ { "", NONE, 0, 0 }, 523 /*2*/ { "fst", DBLR, op1(STI), 0 }, 524 /*3*/ { "fstp", DBLR, op1(STI), 0 }, 525 /*4*/ { "frstor", NONE, op1(STI), "fucom" }, 526 /*5*/ { "", NONE, op1(STI), "fucomp" }, 527 /*6*/ { "fnsave", NONE, 0, 0 }, 528 /*7*/ { "fnstsw", NONE, 0, 0 }, 529 }; 530 531 static const struct finst db_Esce[] = { 532 /*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" }, 533 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" }, 534 /*2*/ { "ficom", WORD, 0, 0 }, 535 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 }, 536 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" }, 537 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" }, 538 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" }, 539 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" }, 540 }; 541 542 static const struct finst db_Escf[] = { 543 /*0*/ { "fild", WORD, 0, 0 }, 544 /*1*/ { "", NONE, 0, 0 }, 545 /*2*/ { "fist", WORD, 0, 0 }, 546 /*3*/ { "fistp", WORD, 0, 0 }, 547 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 }, 548 /*5*/ { "fild", QUAD, 0, 0 }, 549 /*6*/ { "fbstp", NONE, 0, 0 }, 550 /*7*/ { "fistp", QUAD, 0, 0 }, 551 }; 552 553 static const struct finst * const db_Esc_inst[] = { 554 db_Esc8, db_Esc9, db_Esca, db_Escb, 555 db_Escc, db_Escd, db_Esce, db_Escf 556 }; 557 558 static const char * const db_Grp1[] = { 559 "add", 560 "or", 561 "adc", 562 "sbb", 563 "and", 564 "sub", 565 "xor", 566 "cmp" 567 }; 568 569 static const char * const db_Grp2[] = { 570 "rol", 571 "ror", 572 "rcl", 573 "rcr", 574 "shl", 575 "shr", 576 "shl", 577 "sar" 578 }; 579 580 static const struct inst db_Grp3[] = { 581 { "test", TRUE, NONE, op2(I,E), 0 }, 582 { "test", TRUE, NONE, op2(I,E), 0 }, 583 { "not", TRUE, NONE, op1(E), 0 }, 584 { "neg", TRUE, NONE, op1(E), 0 }, 585 { "mul", TRUE, NONE, op2(E,A), 0 }, 586 { "imul", TRUE, NONE, op2(E,A), 0 }, 587 { "div", TRUE, NONE, op2(E,A), 0 }, 588 { "idiv", TRUE, NONE, op2(E,A), 0 }, 589 }; 590 591 static const struct inst db_Grp4[] = { 592 { "inc", TRUE, BYTE, op1(E), 0 }, 593 { "dec", TRUE, BYTE, op1(E), 0 }, 594 { "", TRUE, NONE, 0, 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 }; 601 602 static const struct inst db_Grp5[] = { 603 { "inc", TRUE, LONG, op1(E), 0 }, 604 { "dec", TRUE, LONG, op1(E), 0 }, 605 { "call", TRUE, LONG, op1(Eind),0 }, 606 { "lcall", TRUE, LONG, op1(Eind),0 }, 607 { "jmp", TRUE, LONG, op1(Eind),0 }, 608 { "ljmp", TRUE, LONG, op1(Eind),0 }, 609 { "push", TRUE, LONG, op1(E), 0 }, 610 { "", TRUE, NONE, 0, 0 } 611 }; 612 613 static const struct inst db_inst_table[256] = { 614 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 }, 615 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 }, 616 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 }, 617 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 }, 618 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 }, 619 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 }, 620 /*06*/ { "push", FALSE, NONE, op1(Si), 0 }, 621 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 }, 622 623 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 }, 624 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 }, 625 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 }, 626 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 }, 627 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 }, 628 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 }, 629 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 }, 630 /*0f*/ { "", FALSE, NONE, 0, 0 }, 631 632 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 }, 633 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 }, 634 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 }, 635 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 }, 636 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 }, 637 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 }, 638 /*16*/ { "push", FALSE, NONE, op1(Si), 0 }, 639 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 }, 640 641 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 }, 642 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 }, 643 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 }, 644 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 }, 645 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 }, 646 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 }, 647 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 }, 648 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 }, 649 650 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 }, 651 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 }, 652 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 }, 653 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 }, 654 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 }, 655 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 }, 656 /*26*/ { "", FALSE, NONE, 0, 0 }, 657 /*27*/ { "daa", FALSE, NONE, 0, 0 }, 658 659 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 }, 660 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 }, 661 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 }, 662 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 }, 663 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 }, 664 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 }, 665 /*2e*/ { "", FALSE, NONE, 0, 0 }, 666 /*2f*/ { "das", FALSE, NONE, 0, 0 }, 667 668 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 }, 669 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 }, 670 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 }, 671 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 }, 672 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 }, 673 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 }, 674 /*36*/ { "", FALSE, NONE, 0, 0 }, 675 /*37*/ { "aaa", FALSE, NONE, 0, 0 }, 676 677 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 }, 678 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 }, 679 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 }, 680 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 }, 681 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 }, 682 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, 683 /*3e*/ { "", FALSE, NONE, 0, 0 }, 684 /*3f*/ { "aas", FALSE, NONE, 0, 0 }, 685 686 /*40*/ { "rex", FALSE, NONE, 0, 0 }, 687 /*41*/ { "rex.b", FALSE, NONE, 0, 0 }, 688 /*42*/ { "rex.x", FALSE, NONE, 0, 0 }, 689 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 }, 690 /*44*/ { "rex.r", FALSE, NONE, 0, 0 }, 691 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 }, 692 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 }, 693 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 }, 694 695 /*48*/ { "rex.w", FALSE, NONE, 0, 0 }, 696 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 }, 697 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 }, 698 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 }, 699 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 }, 700 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 }, 701 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 }, 702 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 }, 703 704 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 }, 705 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 }, 706 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 }, 707 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 }, 708 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 }, 709 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 }, 710 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 }, 711 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 }, 712 713 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 714 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 715 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 716 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 717 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 718 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 719 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 720 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 721 722 /*60*/ { "pusha", FALSE, LONG, 0, 0 }, 723 /*61*/ { "popa", FALSE, LONG, 0, 0 }, 724 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 }, 725 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 }, 726 727 /*64*/ { "", FALSE, NONE, 0, 0 }, 728 /*65*/ { "", FALSE, NONE, 0, 0 }, 729 /*66*/ { "", FALSE, NONE, 0, 0 }, 730 /*67*/ { "", FALSE, NONE, 0, 0 }, 731 732 /*68*/ { "push", FALSE, LONG, op1(I), 0 }, 733 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 }, 734 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 }, 735 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 }, 736 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 }, 737 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 }, 738 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 }, 739 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 }, 740 741 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 }, 742 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 }, 743 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 }, 744 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 }, 745 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 }, 746 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 }, 747 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 }, 748 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 }, 749 750 /*78*/ { "js", FALSE, NONE, op1(Db), 0 }, 751 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 }, 752 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 }, 753 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 }, 754 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 }, 755 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 }, 756 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 }, 757 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 }, 758 759 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 760 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 }, 761 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 762 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 }, 763 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 }, 764 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 }, 765 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 }, 766 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 }, 767 768 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 }, 769 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 }, 770 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 }, 771 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 }, 772 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 }, 773 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 }, 774 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 }, 775 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 }, 776 777 /*90*/ { "nop", FALSE, NONE, 0, 0 }, 778 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 779 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 780 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 781 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 782 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 783 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 784 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 785 786 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */ 787 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */ 788 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 }, 789 /*9b*/ { "wait", FALSE, NONE, 0, 0 }, 790 /*9c*/ { "pushf", FALSE, LONG, 0, 0 }, 791 /*9d*/ { "popf", FALSE, LONG, 0, 0 }, 792 /*9e*/ { "sahf", FALSE, NONE, 0, 0 }, 793 /*9f*/ { "lahf", FALSE, NONE, 0, 0 }, 794 795 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 }, 796 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 }, 797 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 }, 798 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 }, 799 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 }, 800 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 }, 801 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 }, 802 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 }, 803 804 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 }, 805 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 }, 806 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 }, 807 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 }, 808 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 }, 809 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 }, 810 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 }, 811 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 }, 812 813 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 814 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 815 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 816 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 817 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 818 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 819 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 820 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 821 822 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 823 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 824 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 825 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 826 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 827 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 828 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 829 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 830 831 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 }, 832 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 }, 833 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 }, 834 /*c3*/ { "ret", FALSE, NONE, 0, 0 }, 835 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 }, 836 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 }, 837 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 }, 838 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 }, 839 840 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 }, 841 /*c9*/ { "leave", FALSE, NONE, 0, 0 }, 842 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 }, 843 /*cb*/ { "lret", FALSE, NONE, 0, 0 }, 844 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 }, 845 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 }, 846 /*ce*/ { "into", FALSE, NONE, 0, 0 }, 847 /*cf*/ { "iret", FALSE, NONE, 0, 0 }, 848 849 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 }, 850 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 }, 851 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 }, 852 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 }, 853 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 }, 854 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 }, 855 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 }, 856 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, 857 858 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 }, 859 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 }, 860 /*da*/ { "", TRUE, NONE, 0, db_Esca }, 861 /*db*/ { "", TRUE, NONE, 0, db_Escb }, 862 /*dc*/ { "", TRUE, NONE, 0, db_Escc }, 863 /*dd*/ { "", TRUE, NONE, 0, db_Escd }, 864 /*de*/ { "", TRUE, NONE, 0, db_Esce }, 865 /*df*/ { "", TRUE, NONE, 0, db_Escf }, 866 867 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, 868 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, 869 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, 870 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" }, 871 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 }, 872 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 }, 873 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 }, 874 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 }, 875 876 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 }, 877 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 }, 878 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 }, 879 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 }, 880 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 }, 881 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 }, 882 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 }, 883 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 }, 884 885 /*f0*/ { "", FALSE, NONE, 0, 0 }, 886 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 }, 887 /*f2*/ { "", FALSE, NONE, 0, 0 }, 888 /*f3*/ { "", FALSE, NONE, 0, 0 }, 889 /*f4*/ { "hlt", FALSE, NONE, 0, 0 }, 890 /*f5*/ { "cmc", FALSE, NONE, 0, 0 }, 891 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 }, 892 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 }, 893 894 /*f8*/ { "clc", FALSE, NONE, 0, 0 }, 895 /*f9*/ { "stc", FALSE, NONE, 0, 0 }, 896 /*fa*/ { "cli", FALSE, NONE, 0, 0 }, 897 /*fb*/ { "sti", FALSE, NONE, 0, 0 }, 898 /*fc*/ { "cld", FALSE, NONE, 0, 0 }, 899 /*fd*/ { "std", FALSE, NONE, 0, 0 }, 900 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 }, 901 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 }, 902 }; 903 904 static const struct inst db_bad_inst = { "???", FALSE, NONE, 0, 0 }; 905 906 #define f_mod(rex, byte) ((byte)>>6) 907 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0)) 908 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 909 910 #define sib_ss(rex, byte) ((byte)>>6) 911 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0)) 912 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 913 914 struct i_addr { 915 int is_reg; /* if reg, reg number is in 'disp' */ 916 int disp; 917 const char * base; 918 const char * index; 919 int ss; 920 }; 921 922 static const char * const db_reg[2][4][16] = { 923 924 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh", 925 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 926 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 927 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 928 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 929 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 930 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 931 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}, 932 933 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil", 934 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 935 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 936 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 937 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 938 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 939 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 940 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }} 941 }; 942 943 static const char * const db_seg_reg[8] = { 944 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", "" 945 }; 946 947 /* 948 * lengths for size attributes 949 */ 950 static const int db_lengths[] = { 951 1, /* BYTE */ 952 2, /* WORD */ 953 4, /* LONG */ 954 8, /* QUAD */ 955 4, /* SNGL */ 956 8, /* DBLR */ 957 10, /* EXTR */ 958 }; 959 960 #define get_value_inc(result, loc, size, is_signed) \ 961 result = db_get_value((loc), (size), (is_signed)); \ 962 (loc) += (size); 963 964 static db_addr_t 965 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, 966 int size, const char *seg); 967 static void db_print_address(const char *seg, int size, int rex, 968 struct i_addr *addrp); 969 static db_addr_t 970 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, 971 struct i_addr *addrp); 972 973 /* 974 * Read address at location and return updated location. 975 */ 976 static db_addr_t 977 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, 978 struct i_addr *addrp) 979 { 980 int mod, rm, sib, index, disp, size, have_sib; 981 982 mod = f_mod(rex, regmodrm); 983 rm = f_rm(rex, regmodrm); 984 985 if (mod == 3) { 986 addrp->is_reg = TRUE; 987 addrp->disp = rm; 988 return (loc); 989 } 990 addrp->is_reg = FALSE; 991 addrp->index = NULL; 992 993 if (short_addr) 994 size = LONG; 995 else 996 size = QUAD; 997 998 if ((rm & 0x7) == 4) { 999 get_value_inc(sib, loc, 1, FALSE); 1000 rm = sib_base(rex, sib); 1001 index = sib_index(rex, sib); 1002 if (index != 4) 1003 addrp->index = db_reg[1][size][index]; 1004 addrp->ss = sib_ss(rex, sib); 1005 have_sib = 1; 1006 } else 1007 have_sib = 0; 1008 1009 switch (mod) { 1010 case 0: 1011 if (rm == 5) { 1012 get_value_inc(addrp->disp, loc, 4, FALSE); 1013 if (have_sib) 1014 addrp->base = NULL; 1015 else if (short_addr) 1016 addrp->base = "%eip"; 1017 else 1018 addrp->base = "%rip"; 1019 } else { 1020 addrp->disp = 0; 1021 addrp->base = db_reg[1][size][rm]; 1022 } 1023 break; 1024 1025 case 1: 1026 get_value_inc(disp, loc, 1, TRUE); 1027 addrp->disp = disp; 1028 addrp->base = db_reg[1][size][rm]; 1029 break; 1030 1031 case 2: 1032 get_value_inc(disp, loc, 4, FALSE); 1033 addrp->disp = disp; 1034 addrp->base = db_reg[1][size][rm]; 1035 break; 1036 } 1037 return (loc); 1038 } 1039 1040 static void 1041 db_print_address(const char *seg, int size, int rex, struct i_addr *addrp) 1042 { 1043 if (addrp->is_reg) { 1044 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]); 1045 return; 1046 } 1047 1048 if (seg) { 1049 db_printf("%s:", seg); 1050 } 1051 1052 if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL)) 1053 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY); 1054 if (addrp->base != NULL || addrp->index != NULL) { 1055 db_printf("("); 1056 if (addrp->base) 1057 db_printf("%s", addrp->base); 1058 if (addrp->index) 1059 db_printf(",%s,%d", addrp->index, 1<<addrp->ss); 1060 db_printf(")"); 1061 } 1062 } 1063 1064 /* 1065 * Disassemble floating-point ("escape") instruction 1066 * and return updated location. 1067 */ 1068 static db_addr_t 1069 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, int size, 1070 const char *seg) 1071 { 1072 int regmodrm; 1073 const struct finst * fp; 1074 int mod; 1075 struct i_addr address; 1076 const char * name; 1077 1078 get_value_inc(regmodrm, loc, 1, FALSE); 1079 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)]; 1080 mod = f_mod(rex, regmodrm); 1081 if (mod != 3) { 1082 if (*fp->f_name == '\0') { 1083 db_printf("<bad instruction>"); 1084 return (loc); 1085 } 1086 /* 1087 * Normal address modes. 1088 */ 1089 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1090 db_printf("%s", fp->f_name); 1091 switch(fp->f_size) { 1092 case SNGL: 1093 db_printf("s"); 1094 break; 1095 case DBLR: 1096 db_printf("l"); 1097 break; 1098 case EXTR: 1099 db_printf("t"); 1100 break; 1101 case WORD: 1102 db_printf("s"); 1103 break; 1104 case LONG: 1105 db_printf("l"); 1106 break; 1107 case QUAD: 1108 db_printf("q"); 1109 break; 1110 default: 1111 break; 1112 } 1113 db_printf("\t"); 1114 db_print_address(seg, BYTE, rex, &address); 1115 } 1116 else { 1117 /* 1118 * 'reg-reg' - special formats 1119 */ 1120 switch (fp->f_rrmode) { 1121 case op2(ST,STI): 1122 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1123 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm)); 1124 break; 1125 case op2(STI,ST): 1126 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1127 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm)); 1128 break; 1129 case op1(STI): 1130 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1131 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm)); 1132 break; 1133 case op1(X): 1134 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1135 if (*name == '\0') 1136 goto bad; 1137 db_printf("%s", name); 1138 break; 1139 case op1(XA): 1140 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1141 if (*name == '\0') 1142 goto bad; 1143 db_printf("%s\t%%ax", name); 1144 break; 1145 default: 1146 bad: 1147 db_printf("<bad instruction>"); 1148 break; 1149 } 1150 } 1151 1152 return (loc); 1153 } 1154 1155 /* 1156 * Disassemble instruction at 'loc'. 'altfmt' specifies an 1157 * (optional) alternate format. Return address of start of 1158 * next instruction. 1159 */ 1160 db_addr_t 1161 db_disasm(db_addr_t loc, boolean_t altfmt, db_regs_t *dummy) 1162 { 1163 int inst; 1164 int size; 1165 int short_addr; 1166 const char * seg; 1167 const struct inst * ip; 1168 const char * i_name; 1169 int i_size; 1170 int i_mode; 1171 int rex = 0; 1172 int regmodrm = 0; 1173 boolean_t first; 1174 int displ; 1175 int prefix; 1176 int imm; 1177 int imm2; 1178 long imm64; 1179 int len; 1180 struct i_addr address; 1181 1182 get_value_inc(inst, loc, 1, FALSE); 1183 short_addr = FALSE; 1184 size = LONG; 1185 seg = NULL; 1186 1187 /* 1188 * Get prefixes 1189 */ 1190 prefix = TRUE; 1191 do { 1192 switch (inst) { 1193 case 0x66: /* data16 */ 1194 size = WORD; 1195 break; 1196 case 0x67: 1197 short_addr = TRUE; 1198 break; 1199 case 0x26: 1200 seg = "%es"; 1201 break; 1202 case 0x36: 1203 seg = "%ss"; 1204 break; 1205 case 0x2e: 1206 seg = "%cs"; 1207 break; 1208 case 0x3e: 1209 seg = "%ds"; 1210 break; 1211 case 0x64: 1212 seg = "%fs"; 1213 break; 1214 case 0x65: 1215 seg = "%gs"; 1216 break; 1217 case 0xf0: 1218 db_printf("lock "); 1219 break; 1220 case 0xf2: 1221 db_printf("repne "); 1222 break; 1223 case 0xf3: 1224 db_printf("repe "); /* XXX repe VS rep */ 1225 break; 1226 default: 1227 prefix = FALSE; 1228 break; 1229 } 1230 if (inst >= 0x40 && inst < 0x50) { 1231 rex = inst; 1232 prefix = TRUE; 1233 } 1234 if (prefix) { 1235 get_value_inc(inst, loc, 1, FALSE); 1236 } 1237 } while (prefix); 1238 1239 if (inst >= 0xd8 && inst <= 0xdf) { 1240 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg); 1241 db_printf("\n"); 1242 return (loc); 1243 } 1244 1245 if (inst == 0x0f) { 1246 get_value_inc(inst, loc, 1, FALSE); 1247 ip = db_inst_0f[inst>>4]; 1248 if (ip == NULL) { 1249 ip = &db_bad_inst; 1250 } 1251 else { 1252 ip = &ip[inst&0xf]; 1253 } 1254 } 1255 else 1256 ip = &db_inst_table[inst]; 1257 1258 if (ip->i_has_modrm) { 1259 get_value_inc(regmodrm, loc, 1, FALSE); 1260 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1261 } 1262 1263 i_name = ip->i_name; 1264 i_size = ip->i_size; 1265 i_mode = ip->i_mode; 1266 1267 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 || 1268 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp8 || 1269 ip->i_extra == db_Grp9) { 1270 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; 1271 } 1272 else if (ip->i_extra == db_Grp7) { 1273 if((regmodrm & 0xC0) == 0xC0) { 1274 i_name = db_Grp7_11[f_reg(rex, regmodrm)][regmodrm &0x7]; 1275 i_mode = 0; 1276 } 1277 else { 1278 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; 1279 } 1280 } 1281 else if (ip->i_extra == db_Grp3) { 1282 ip = ip->i_extra; 1283 ip = &ip[f_reg(rex, regmodrm)]; 1284 i_name = ip->i_name; 1285 i_mode = ip->i_mode; 1286 } 1287 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) { 1288 ip = ip->i_extra; 1289 ip = &ip[f_reg(rex, regmodrm)]; 1290 i_name = ip->i_name; 1291 i_mode = ip->i_mode; 1292 i_size = ip->i_size; 1293 } 1294 1295 if (i_size == SDEP) { 1296 if (size == WORD) 1297 db_printf("%s", i_name); 1298 else 1299 db_printf("%s", (const char *)ip->i_extra); 1300 } 1301 else { 1302 db_printf("%s", i_name); 1303 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) { 1304 i_size = NONE; 1305 db_printf("q"); 1306 } 1307 if (i_size != NONE) { 1308 if (i_size == BYTE) { 1309 db_printf("b"); 1310 size = BYTE; 1311 } 1312 else if (i_size == WORD) { 1313 db_printf("w"); 1314 size = WORD; 1315 } 1316 else if (size == WORD) 1317 db_printf("w"); 1318 else { 1319 if (rex & REX_W) 1320 db_printf("q"); 1321 else 1322 db_printf("l"); 1323 } 1324 } 1325 } 1326 db_printf("\t"); 1327 for (first = TRUE; 1328 i_mode != 0; 1329 i_mode >>= 8, first = FALSE) 1330 { 1331 if (!first) 1332 db_printf(","); 1333 1334 switch (i_mode & 0xFF) { 1335 1336 case E: 1337 db_print_address(seg, size, rex, &address); 1338 break; 1339 1340 case Eind: 1341 db_printf("*"); 1342 db_print_address(seg, size, rex, &address); 1343 break; 1344 1345 case El: 1346 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address); 1347 break; 1348 1349 case EL: 1350 db_print_address(seg, LONG, 0, &address); 1351 break; 1352 1353 case Ew: 1354 db_print_address(seg, WORD, rex, &address); 1355 break; 1356 1357 case Eb: 1358 db_print_address(seg, BYTE, rex, &address); 1359 break; 1360 1361 case R: 1362 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]); 1363 break; 1364 1365 case Rw: 1366 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]); 1367 break; 1368 1369 case Ri: 1370 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]); 1371 break; 1372 1373 case Ril: 1374 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]); 1375 break; 1376 1377 case S: 1378 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]); 1379 break; 1380 1381 case Si: 1382 db_printf("%s", db_seg_reg[f_reg(rex, inst)]); 1383 break; 1384 1385 case A: 1386 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */ 1387 break; 1388 1389 case BX: 1390 if (seg) 1391 db_printf("%s:", seg); 1392 db_printf("(%s)", short_addr ? "%bx" : "%ebx"); 1393 break; 1394 1395 case CL: 1396 db_printf("%%cl"); 1397 break; 1398 1399 case DX: 1400 db_printf("%%dx"); 1401 break; 1402 1403 case SI: 1404 if (seg) 1405 db_printf("%s:", seg); 1406 db_printf("(%s)", short_addr ? "%si" : "%rsi"); 1407 break; 1408 1409 case DI: 1410 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi"); 1411 break; 1412 1413 case CR: 1414 db_printf("%%cr%d", f_reg(rex, regmodrm)); 1415 break; 1416 1417 case DR: 1418 db_printf("%%dr%d", f_reg(rex, regmodrm)); 1419 break; 1420 1421 case TR: 1422 db_printf("%%tr%d", f_reg(rex, regmodrm)); 1423 break; 1424 1425 case I: 1426 len = db_lengths[size]; 1427 get_value_inc(imm, loc, len, FALSE); 1428 db_printf("$%#r", imm); 1429 break; 1430 1431 case Is: 1432 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1433 get_value_inc(imm, loc, len, FALSE); 1434 db_printf("$%+#r", imm); 1435 break; 1436 1437 case Ib: 1438 get_value_inc(imm, loc, 1, FALSE); 1439 db_printf("$%#r", imm); 1440 break; 1441 1442 case Iba: 1443 get_value_inc(imm, loc, 1, FALSE); 1444 if (imm != 0x0a) 1445 db_printf("$%#r", imm); 1446 break; 1447 1448 case Ibs: 1449 get_value_inc(imm, loc, 1, TRUE); 1450 if (size == WORD) 1451 imm &= 0xFFFF; 1452 db_printf("$%+#r", imm); 1453 break; 1454 1455 case Iw: 1456 get_value_inc(imm, loc, 2, FALSE); 1457 db_printf("$%#r", imm); 1458 break; 1459 1460 case Ilq: 1461 len = db_lengths[rex & REX_W ? QUAD : LONG]; 1462 get_value_inc(imm64, loc, len, FALSE); 1463 db_printf("$%#lr", imm64); 1464 break; 1465 1466 case O: 1467 len = (short_addr ? 2 : 4); 1468 get_value_inc(displ, loc, len, FALSE); 1469 if (seg) 1470 db_printf("%s:%+#r",seg, displ); 1471 else 1472 db_printsym((db_addr_t)displ, DB_STGY_ANY); 1473 break; 1474 1475 case Db: 1476 get_value_inc(displ, loc, 1, TRUE); 1477 displ += loc; 1478 if (size == WORD) 1479 displ &= 0xFFFF; 1480 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1481 break; 1482 1483 case Dl: 1484 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1485 get_value_inc(displ, loc, len, FALSE); 1486 displ += loc; 1487 if (size == WORD) 1488 displ &= 0xFFFF; 1489 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1490 break; 1491 1492 case o1: 1493 db_printf("$1"); 1494 break; 1495 1496 case o3: 1497 db_printf("$3"); 1498 break; 1499 1500 case OS: 1501 len = db_lengths[size]; 1502 get_value_inc(imm, loc, len, FALSE); /* offset */ 1503 get_value_inc(imm2, loc, 2, FALSE); /* segment */ 1504 db_printf("$%#r,%#r", imm2, imm); 1505 break; 1506 } 1507 } 1508 db_printf("\n"); 1509 return (loc); 1510 } 1511