Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/amd64/amd64/db_disasm.c
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1 /*- 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie the 24 * rights to redistribute these changes. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * Instruction disassembler. 32 */ 33 #include <sys/param.h> 34 #include <sys/libkern.h> 35 36 #include <ddb/ddb.h> 37 #include <ddb/db_access.h> 38 #include <ddb/db_sym.h> 39 40 /* 41 * Size attributes 42 */ 43 #define BYTE 0 44 #define WORD 1 45 #define LONG 2 46 #define QUAD 3 47 #define SNGL 4 48 #define DBLR 5 49 #define EXTR 6 50 #define SDEP 7 51 #define ADEP 8 52 #define ESC 9 53 #define NONE 10 54 55 /* 56 * REX prefix and bits 57 */ 58 #define REX_B 1 59 #define REX_X 2 60 #define REX_R 4 61 #define REX_W 8 62 #define REX 0x40 63 64 /* 65 * Addressing modes 66 */ 67 #define E 1 /* general effective address */ 68 #define Eind 2 /* indirect address (jump, call) */ 69 #define Ew 3 /* address, word size */ 70 #define Eb 4 /* address, byte size */ 71 #define R 5 /* register, in 'reg' field */ 72 #define Rw 6 /* word register, in 'reg' field */ 73 #define Rq 39 /* quad register, in 'reg' field */ 74 #define Rv 40 /* register in 'r/m' field */ 75 #define Ri 7 /* register in instruction */ 76 #define S 8 /* segment reg, in 'reg' field */ 77 #define Si 9 /* segment reg, in instruction */ 78 #define A 10 /* accumulator */ 79 #define BX 11 /* (bx) */ 80 #define CL 12 /* cl, for shifts */ 81 #define DX 13 /* dx, for IO */ 82 #define SI 14 /* si */ 83 #define DI 15 /* di */ 84 #define CR 16 /* control register */ 85 #define DR 17 /* debug register */ 86 #define TR 18 /* test register */ 87 #define I 19 /* immediate, unsigned */ 88 #define Is 20 /* immediate, signed */ 89 #define Ib 21 /* byte immediate, unsigned */ 90 #define Ibs 22 /* byte immediate, signed */ 91 #define Iw 23 /* word immediate, unsigned */ 92 #define Ilq 24 /* long/quad immediate, unsigned */ 93 #define O 25 /* direct address */ 94 #define Db 26 /* byte displacement from EIP */ 95 #define Dl 27 /* long displacement from EIP */ 96 #define o1 28 /* constant 1 */ 97 #define o3 29 /* constant 3 */ 98 #define OS 30 /* immediate offset/segment */ 99 #define ST 31 /* FP stack top */ 100 #define STI 32 /* FP stack */ 101 #define X 33 /* extended FP op */ 102 #define XA 34 /* for 'fstcw %ax' */ 103 #define El 35 /* address, long/quad size */ 104 #define Ril 36 /* long register in instruction */ 105 #define Iba 37 /* byte immediate, don't print if 0xa */ 106 #define EL 38 /* address, explicitly long size */ 107 108 struct inst { 109 const char * i_name; /* name */ 110 short i_has_modrm; /* has regmodrm byte */ 111 short i_size; /* operand size */ 112 int i_mode; /* addressing modes */ 113 const void * i_extra; /* pointer to extra opcode table */ 114 }; 115 116 #define op1(x) (x) 117 #define op2(x,y) ((x)|((y)<<8)) 118 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16)) 119 120 struct finst { 121 const char * f_name; /* name for memory instruction */ 122 int f_size; /* size for memory instruction */ 123 int f_rrmode; /* mode for rr instruction */ 124 const void * f_rrname; /* name for rr instruction 125 (or pointer to table) */ 126 }; 127 128 static const struct inst db_inst_0f388x[] = { 129 /*80*/ { "", TRUE, SDEP, op2(E, Rq), "invept" }, 130 /*81*/ { "", TRUE, SDEP, op2(E, Rq), "invvpid" }, 131 /*82*/ { "", TRUE, SDEP, op2(E, Rq), "invpcid" }, 132 /*83*/ { "", FALSE, NONE, 0, 0 }, 133 /*84*/ { "", FALSE, NONE, 0, 0 }, 134 /*85*/ { "", FALSE, NONE, 0, 0 }, 135 /*86*/ { "", FALSE, NONE, 0, 0 }, 136 /*87*/ { "", FALSE, NONE, 0, 0 }, 137 138 /*88*/ { "", FALSE, NONE, 0, 0 }, 139 /*89*/ { "", FALSE, NONE, 0, 0 }, 140 /*8a*/ { "", FALSE, NONE, 0, 0 }, 141 /*8b*/ { "", FALSE, NONE, 0, 0 }, 142 /*8c*/ { "", FALSE, NONE, 0, 0 }, 143 /*8d*/ { "", FALSE, NONE, 0, 0 }, 144 /*8e*/ { "", FALSE, NONE, 0, 0 }, 145 /*8f*/ { "", FALSE, NONE, 0, 0 }, 146 }; 147 148 static const struct inst db_inst_0f38fx[] = { 149 /*f0*/ { "crc32b",TRUE, NONE, op2(Eb, R), 0 }, 150 /*f1*/ { "crc32", TRUE, LONG, op2(E, R), 0 }, 151 /*f2*/ { "", FALSE, NONE, 0, 0 }, 152 /*f3*/ { "", FALSE, NONE, 0, 0 }, 153 /*f4*/ { "", FALSE, NONE, 0, 0 }, 154 /*f5*/ { "", FALSE, NONE, 0, 0 }, 155 /*f6*/ { "", FALSE, NONE, 0, 0 }, 156 /*f7*/ { "", FALSE, NONE, 0, 0 }, 157 158 /*f8*/ { "", FALSE, NONE, 0, 0 }, 159 /*f9*/ { "", FALSE, NONE, 0, 0 }, 160 /*fa*/ { "", FALSE, NONE, 0, 0 }, 161 /*fb*/ { "", FALSE, NONE, 0, 0 }, 162 /*fc*/ { "", FALSE, NONE, 0, 0 }, 163 /*fd*/ { "", FALSE, NONE, 0, 0 }, 164 /*fe*/ { "", FALSE, NONE, 0, 0 }, 165 /*ff*/ { "", FALSE, NONE, 0, 0 }, 166 }; 167 168 static const struct inst * const db_inst_0f38[] = { 169 0, 170 0, 171 0, 172 0, 173 0, 174 0, 175 0, 176 0, 177 db_inst_0f388x, 178 0, 179 0, 180 0, 181 0, 182 0, 183 0, 184 db_inst_0f38fx 185 }; 186 187 static const char * const db_Grp6[] = { 188 "sldt", 189 "str", 190 "lldt", 191 "ltr", 192 "verr", 193 "verw", 194 "", 195 "" 196 }; 197 198 static const char * const db_Grp7[] = { 199 "sgdt", 200 "sidt", 201 "lgdt", 202 "lidt", 203 "smsw", 204 "", 205 "lmsw", 206 "invlpg" 207 }; 208 209 static const char * const db_Grp8[] = { 210 "", 211 "", 212 "", 213 "", 214 "bt", 215 "bts", 216 "btr", 217 "btc" 218 }; 219 220 static const char * const db_Grp9[] = { 221 "", 222 "cmpxchg8b", 223 "", 224 "", 225 "", 226 "", 227 "vmptrld", 228 "vmptrst" 229 }; 230 231 static const char * const db_Grp15[] = { 232 "fxsave", 233 "fxrstor", 234 "ldmxcsr", 235 "stmxcsr", 236 "xsave", 237 "xrstor", 238 "xsaveopt", 239 "clflush" 240 }; 241 242 static const char * const db_Grp15b[] = { 243 "", 244 "", 245 "", 246 "", 247 "", 248 "lfence", 249 "mfence", 250 "sfence" 251 }; 252 253 static const struct inst db_inst_0f0x[] = { 254 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 }, 255 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 }, 256 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 }, 257 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 }, 258 /*04*/ { "", FALSE, NONE, 0, 0 }, 259 /*05*/ { "syscall",FALSE,NONE, 0, 0 }, 260 /*06*/ { "clts", FALSE, NONE, 0, 0 }, 261 /*07*/ { "sysret",FALSE, NONE, 0, 0 }, 262 263 /*08*/ { "invd", FALSE, NONE, 0, 0 }, 264 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 }, 265 /*0a*/ { "", FALSE, NONE, 0, 0 }, 266 /*0b*/ { "", FALSE, NONE, 0, 0 }, 267 /*0c*/ { "", FALSE, NONE, 0, 0 }, 268 /*0d*/ { "", FALSE, NONE, 0, 0 }, 269 /*0e*/ { "", FALSE, NONE, 0, 0 }, 270 /*0f*/ { "", FALSE, NONE, 0, 0 }, 271 }; 272 273 static const struct inst db_inst_0f1x[] = { 274 /*10*/ { "", FALSE, NONE, 0, 0 }, 275 /*11*/ { "", FALSE, NONE, 0, 0 }, 276 /*12*/ { "", FALSE, NONE, 0, 0 }, 277 /*13*/ { "", FALSE, NONE, 0, 0 }, 278 /*14*/ { "", FALSE, NONE, 0, 0 }, 279 /*15*/ { "", FALSE, NONE, 0, 0 }, 280 /*16*/ { "", FALSE, NONE, 0, 0 }, 281 /*17*/ { "", FALSE, NONE, 0, 0 }, 282 283 /*18*/ { "", FALSE, NONE, 0, 0 }, 284 /*19*/ { "", FALSE, NONE, 0, 0 }, 285 /*1a*/ { "", FALSE, NONE, 0, 0 }, 286 /*1b*/ { "", FALSE, NONE, 0, 0 }, 287 /*1c*/ { "", FALSE, NONE, 0, 0 }, 288 /*1d*/ { "", FALSE, NONE, 0, 0 }, 289 /*1e*/ { "", FALSE, NONE, 0, 0 }, 290 /*1f*/ { "nopl", TRUE, SDEP, 0, "nopw" }, 291 }; 292 293 static const struct inst db_inst_0f2x[] = { 294 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 }, 295 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 }, 296 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 }, 297 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 }, 298 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 }, 299 /*25*/ { "", FALSE, NONE, 0, 0 }, 300 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 }, 301 /*27*/ { "", FALSE, NONE, 0, 0 }, 302 303 /*28*/ { "", FALSE, NONE, 0, 0 }, 304 /*29*/ { "", FALSE, NONE, 0, 0 }, 305 /*2a*/ { "", FALSE, NONE, 0, 0 }, 306 /*2b*/ { "", FALSE, NONE, 0, 0 }, 307 /*2c*/ { "", FALSE, NONE, 0, 0 }, 308 /*2d*/ { "", FALSE, NONE, 0, 0 }, 309 /*2e*/ { "", FALSE, NONE, 0, 0 }, 310 /*2f*/ { "", FALSE, NONE, 0, 0 }, 311 }; 312 313 static const struct inst db_inst_0f3x[] = { 314 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 }, 315 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 }, 316 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 }, 317 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 }, 318 /*34*/ { "sysenter",FALSE,NONE, 0, 0 }, 319 /*35*/ { "sysexit",FALSE,NONE, 0, 0 }, 320 /*36*/ { "", FALSE, NONE, 0, 0 }, 321 /*37*/ { "getsec",FALSE, NONE, 0, 0 }, 322 323 /*38*/ { "", FALSE, ESC, 0, db_inst_0f38 }, 324 /*39*/ { "", FALSE, NONE, 0, 0 }, 325 /*3a*/ { "", FALSE, NONE, 0, 0 }, 326 /*3b*/ { "", FALSE, NONE, 0, 0 }, 327 /*3c*/ { "", FALSE, NONE, 0, 0 }, 328 /*3d*/ { "", FALSE, NONE, 0, 0 }, 329 /*3e*/ { "", FALSE, NONE, 0, 0 }, 330 /*3f*/ { "", FALSE, NONE, 0, 0 }, 331 }; 332 333 static const struct inst db_inst_0f4x[] = { 334 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 }, 335 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 }, 336 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 }, 337 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 }, 338 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 }, 339 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 }, 340 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 }, 341 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 }, 342 343 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 }, 344 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 }, 345 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 }, 346 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 }, 347 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 }, 348 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 }, 349 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 }, 350 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 }, 351 }; 352 353 static const struct inst db_inst_0f7x[] = { 354 /*70*/ { "", FALSE, NONE, 0, 0 }, 355 /*71*/ { "", FALSE, NONE, 0, 0 }, 356 /*72*/ { "", FALSE, NONE, 0, 0 }, 357 /*73*/ { "", FALSE, NONE, 0, 0 }, 358 /*74*/ { "", FALSE, NONE, 0, 0 }, 359 /*75*/ { "", FALSE, NONE, 0, 0 }, 360 /*76*/ { "", FALSE, NONE, 0, 0 }, 361 /*77*/ { "", FALSE, NONE, 0, 0 }, 362 363 /*78*/ { "vmread", TRUE, NONE, op2(Rq, E), 0 }, 364 /*79*/ { "vmwrite",TRUE, NONE, op2(E, Rq), 0 }, 365 /*7a*/ { "", FALSE, NONE, 0, 0 }, 366 /*7b*/ { "", FALSE, NONE, 0, 0 }, 367 /*7c*/ { "", FALSE, NONE, 0, 0 }, 368 /*7d*/ { "", FALSE, NONE, 0, 0 }, 369 /*7e*/ { "", FALSE, NONE, 0, 0 }, 370 /*7f*/ { "", FALSE, NONE, 0, 0 }, 371 }; 372 373 static const struct inst db_inst_0f8x[] = { 374 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 }, 375 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 }, 376 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 }, 377 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 }, 378 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 }, 379 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 }, 380 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 }, 381 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 }, 382 383 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 }, 384 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 }, 385 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 }, 386 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 }, 387 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 }, 388 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 }, 389 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 }, 390 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 }, 391 }; 392 393 static const struct inst db_inst_0f9x[] = { 394 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 }, 395 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 }, 396 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 }, 397 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 }, 398 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 }, 399 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 }, 400 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 }, 401 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 }, 402 403 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 }, 404 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 }, 405 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 }, 406 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 }, 407 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 }, 408 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 }, 409 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 }, 410 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 }, 411 }; 412 413 static const struct inst db_inst_0fax[] = { 414 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 }, 415 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 }, 416 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 }, 417 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 }, 418 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 }, 419 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 }, 420 /*a6*/ { "", FALSE, NONE, 0, 0 }, 421 /*a7*/ { "", FALSE, NONE, 0, 0 }, 422 423 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 }, 424 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 }, 425 /*aa*/ { "rsm", FALSE, NONE, 0, 0 }, 426 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 }, 427 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 }, 428 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 }, 429 /*ae*/ { "", TRUE, LONG, op1(E), db_Grp15 }, 430 /*af*/ { "imul", TRUE, LONG, op2(E,R), 0 }, 431 }; 432 433 static const struct inst db_inst_0fbx[] = { 434 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 }, 435 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 }, 436 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 }, 437 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 }, 438 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 }, 439 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 }, 440 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 }, 441 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 }, 442 443 /*b8*/ { "", FALSE, NONE, 0, 0 }, 444 /*b9*/ { "", FALSE, NONE, 0, 0 }, 445 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 }, 446 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 }, 447 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 }, 448 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 }, 449 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 }, 450 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 }, 451 }; 452 453 static const struct inst db_inst_0fcx[] = { 454 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 }, 455 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 }, 456 /*c2*/ { "", FALSE, NONE, 0, 0 }, 457 /*c3*/ { "", FALSE, NONE, 0, 0 }, 458 /*c4*/ { "", FALSE, NONE, 0, 0 }, 459 /*c5*/ { "", FALSE, NONE, 0, 0 }, 460 /*c6*/ { "", FALSE, NONE, 0, 0 }, 461 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 }, 462 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 463 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 464 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 465 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 466 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 467 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 468 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 469 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 }, 470 }; 471 472 static const struct inst * const db_inst_0f[] = { 473 db_inst_0f0x, 474 db_inst_0f1x, 475 db_inst_0f2x, 476 db_inst_0f3x, 477 db_inst_0f4x, 478 0, 479 0, 480 db_inst_0f7x, 481 db_inst_0f8x, 482 db_inst_0f9x, 483 db_inst_0fax, 484 db_inst_0fbx, 485 db_inst_0fcx, 486 0, 487 0, 488 0 489 }; 490 491 static const char * const db_Esc92[] = { 492 "fnop", "", "", "", "", "", "", "" 493 }; 494 static const char * const db_Esc94[] = { 495 "fchs", "fabs", "", "", "ftst", "fxam", "", "" 496 }; 497 static const char * const db_Esc95[] = { 498 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","" 499 }; 500 static const char * const db_Esc96[] = { 501 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp", 502 "fincstp" 503 }; 504 static const char * const db_Esc97[] = { 505 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos" 506 }; 507 508 static const char * const db_Esca5[] = { 509 "", "fucompp","", "", "", "", "", "" 510 }; 511 512 static const char * const db_Escb4[] = { 513 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", "" 514 }; 515 516 static const char * const db_Esce3[] = { 517 "", "fcompp","", "", "", "", "", "" 518 }; 519 520 static const char * const db_Escf4[] = { 521 "fnstsw","", "", "", "", "", "", "" 522 }; 523 524 static const struct finst db_Esc8[] = { 525 /**/ { "fadd", SNGL, op2(STI,ST), 0 }, 526 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 }, 527 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 }, 528 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 }, 529 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 }, 530 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 }, 531 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 }, 532 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 }, 533 }; 534 535 static const struct finst db_Esc9[] = { 536 /**/ { "fld", SNGL, op1(STI), 0 }, 537 /*1*/ { "", NONE, op1(STI), "fxch" }, 538 /*2*/ { "fst", SNGL, op1(X), db_Esc92 }, 539 /*3*/ { "fstp", SNGL, 0, 0 }, 540 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 }, 541 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 }, 542 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 }, 543 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 }, 544 }; 545 546 static const struct finst db_Esca[] = { 547 /**/ { "fiadd", LONG, 0, 0 }, 548 /*1*/ { "fimul", LONG, 0, 0 }, 549 /*2*/ { "ficom", LONG, 0, 0 }, 550 /*3*/ { "ficomp", LONG, 0, 0 }, 551 /*4*/ { "fisub", LONG, 0, 0 }, 552 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 }, 553 /*6*/ { "fidiv", LONG, 0, 0 }, 554 /*7*/ { "fidivr", LONG, 0, 0 } 555 }; 556 557 static const struct finst db_Escb[] = { 558 /**/ { "fild", LONG, 0, 0 }, 559 /*1*/ { "", NONE, 0, 0 }, 560 /*2*/ { "fist", LONG, 0, 0 }, 561 /*3*/ { "fistp", LONG, 0, 0 }, 562 /*4*/ { "", WORD, op1(X), db_Escb4 }, 563 /*5*/ { "fld", EXTR, 0, 0 }, 564 /*6*/ { "", WORD, 0, 0 }, 565 /*7*/ { "fstp", EXTR, 0, 0 }, 566 }; 567 568 static const struct finst db_Escc[] = { 569 /**/ { "fadd", DBLR, op2(ST,STI), 0 }, 570 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 }, 571 /*2*/ { "fcom", DBLR, 0, 0 }, 572 /*3*/ { "fcomp", DBLR, 0, 0 }, 573 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" }, 574 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" }, 575 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" }, 576 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" }, 577 }; 578 579 static const struct finst db_Escd[] = { 580 /**/ { "fld", DBLR, op1(STI), "ffree" }, 581 /*1*/ { "", NONE, 0, 0 }, 582 /*2*/ { "fst", DBLR, op1(STI), 0 }, 583 /*3*/ { "fstp", DBLR, op1(STI), 0 }, 584 /*4*/ { "frstor", NONE, op1(STI), "fucom" }, 585 /*5*/ { "", NONE, op1(STI), "fucomp" }, 586 /*6*/ { "fnsave", NONE, 0, 0 }, 587 /*7*/ { "fnstsw", NONE, 0, 0 }, 588 }; 589 590 static const struct finst db_Esce[] = { 591 /**/ { "fiadd", WORD, op2(ST,STI), "faddp" }, 592 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" }, 593 /*2*/ { "ficom", WORD, 0, 0 }, 594 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 }, 595 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" }, 596 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" }, 597 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" }, 598 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" }, 599 }; 600 601 static const struct finst db_Escf[] = { 602 /**/ { "fild", WORD, 0, 0 }, 603 /*1*/ { "", NONE, 0, 0 }, 604 /*2*/ { "fist", WORD, 0, 0 }, 605 /*3*/ { "fistp", WORD, 0, 0 }, 606 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 }, 607 /*5*/ { "fild", QUAD, 0, 0 }, 608 /*6*/ { "fbstp", NONE, 0, 0 }, 609 /*7*/ { "fistp", QUAD, 0, 0 }, 610 }; 611 612 static const struct finst * const db_Esc_inst[] = { 613 db_Esc8, db_Esc9, db_Esca, db_Escb, 614 db_Escc, db_Escd, db_Esce, db_Escf 615 }; 616 617 static const char * const db_Grp1[] = { 618 "add", 619 "or", 620 "adc", 621 "sbb", 622 "and", 623 "sub", 624 "xor", 625 "cmp" 626 }; 627 628 static const char * const db_Grp2[] = { 629 "rol", 630 "ror", 631 "rcl", 632 "rcr", 633 "shl", 634 "shr", 635 "shl", 636 "sar" 637 }; 638 639 static const struct inst db_Grp3[] = { 640 { "test", TRUE, NONE, op2(I,E), 0 }, 641 { "test", TRUE, NONE, op2(I,E), 0 }, 642 { "not", TRUE, NONE, op1(E), 0 }, 643 { "neg", TRUE, NONE, op1(E), 0 }, 644 { "mul", TRUE, NONE, op2(E,A), 0 }, 645 { "imul", TRUE, NONE, op2(E,A), 0 }, 646 { "div", TRUE, NONE, op2(E,A), 0 }, 647 { "idiv", TRUE, NONE, op2(E,A), 0 }, 648 }; 649 650 static const struct inst db_Grp4[] = { 651 { "inc", TRUE, BYTE, op1(E), 0 }, 652 { "dec", TRUE, BYTE, op1(E), 0 }, 653 { "", TRUE, NONE, 0, 0 }, 654 { "", TRUE, NONE, 0, 0 }, 655 { "", TRUE, NONE, 0, 0 }, 656 { "", TRUE, NONE, 0, 0 }, 657 { "", TRUE, NONE, 0, 0 }, 658 { "", TRUE, NONE, 0, 0 } 659 }; 660 661 static const struct inst db_Grp5[] = { 662 { "inc", TRUE, LONG, op1(E), 0 }, 663 { "dec", TRUE, LONG, op1(E), 0 }, 664 { "call", TRUE, LONG, op1(Eind),0 }, 665 { "lcall", TRUE, LONG, op1(Eind),0 }, 666 { "jmp", TRUE, LONG, op1(Eind),0 }, 667 { "ljmp", TRUE, LONG, op1(Eind),0 }, 668 { "push", TRUE, LONG, op1(E), 0 }, 669 { "", TRUE, NONE, 0, 0 } 670 }; 671 672 static const struct inst db_Grp9b[] = { 673 { "", TRUE, NONE, 0, 0 }, 674 { "", TRUE, NONE, 0, 0 }, 675 { "", TRUE, NONE, 0, 0 }, 676 { "", TRUE, NONE, 0, 0 }, 677 { "", TRUE, NONE, 0, 0 }, 678 { "", TRUE, NONE, 0, 0 }, 679 { "rdrand",TRUE, LONG, op1(Rv), 0 }, 680 { "rdseed",TRUE, LONG, op1(Rv), 0 } 681 }; 682 683 static const struct inst db_inst_table[256] = { 684 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 }, 685 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 }, 686 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 }, 687 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 }, 688 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 }, 689 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 }, 690 /*06*/ { "push", FALSE, NONE, op1(Si), 0 }, 691 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 }, 692 693 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 }, 694 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 }, 695 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 }, 696 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 }, 697 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 }, 698 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 }, 699 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 }, 700 /*0f*/ { "", FALSE, ESC, 0, db_inst_0f }, 701 702 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 }, 703 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 }, 704 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 }, 705 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 }, 706 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 }, 707 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 }, 708 /*16*/ { "push", FALSE, NONE, op1(Si), 0 }, 709 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 }, 710 711 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 }, 712 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 }, 713 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 }, 714 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 }, 715 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 }, 716 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 }, 717 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 }, 718 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 }, 719 720 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 }, 721 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 }, 722 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 }, 723 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 }, 724 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 }, 725 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 }, 726 /*26*/ { "", FALSE, NONE, 0, 0 }, 727 /*27*/ { "daa", FALSE, NONE, 0, 0 }, 728 729 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 }, 730 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 }, 731 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 }, 732 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 }, 733 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 }, 734 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 }, 735 /*2e*/ { "", FALSE, NONE, 0, 0 }, 736 /*2f*/ { "das", FALSE, NONE, 0, 0 }, 737 738 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 }, 739 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 }, 740 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 }, 741 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 }, 742 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 }, 743 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 }, 744 /*36*/ { "", FALSE, NONE, 0, 0 }, 745 /*37*/ { "aaa", FALSE, NONE, 0, 0 }, 746 747 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 }, 748 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 }, 749 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 }, 750 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 }, 751 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 }, 752 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 }, 753 /*3e*/ { "", FALSE, NONE, 0, 0 }, 754 /*3f*/ { "aas", FALSE, NONE, 0, 0 }, 755 756 /*40*/ { "rex", FALSE, NONE, 0, 0 }, 757 /*41*/ { "rex.b", FALSE, NONE, 0, 0 }, 758 /*42*/ { "rex.x", FALSE, NONE, 0, 0 }, 759 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 }, 760 /*44*/ { "rex.r", FALSE, NONE, 0, 0 }, 761 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 }, 762 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 }, 763 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 }, 764 765 /*48*/ { "rex.w", FALSE, NONE, 0, 0 }, 766 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 }, 767 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 }, 768 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 }, 769 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 }, 770 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 }, 771 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 }, 772 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 }, 773 774 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 }, 775 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 }, 776 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 }, 777 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 }, 778 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 }, 779 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 }, 780 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 }, 781 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 }, 782 783 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 784 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 785 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 786 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 787 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 788 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 789 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 790 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 }, 791 792 /*60*/ { "pusha", FALSE, LONG, 0, 0 }, 793 /*61*/ { "popa", FALSE, LONG, 0, 0 }, 794 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 }, 795 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 }, 796 797 /*64*/ { "", FALSE, NONE, 0, 0 }, 798 /*65*/ { "", FALSE, NONE, 0, 0 }, 799 /*66*/ { "", FALSE, NONE, 0, 0 }, 800 /*67*/ { "", FALSE, NONE, 0, 0 }, 801 802 /*68*/ { "push", FALSE, LONG, op1(I), 0 }, 803 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 }, 804 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 }, 805 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 }, 806 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 }, 807 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 }, 808 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 }, 809 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 }, 810 811 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 }, 812 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 }, 813 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 }, 814 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 }, 815 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 }, 816 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 }, 817 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 }, 818 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 }, 819 820 /*78*/ { "js", FALSE, NONE, op1(Db), 0 }, 821 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 }, 822 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 }, 823 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 }, 824 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 }, 825 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 }, 826 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 }, 827 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 }, 828 829 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 830 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 }, 831 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 }, 832 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 }, 833 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 }, 834 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 }, 835 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 }, 836 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 }, 837 838 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 }, 839 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 }, 840 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 }, 841 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 }, 842 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 }, 843 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 }, 844 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 }, 845 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 }, 846 847 /*90*/ { "nop", FALSE, NONE, 0, 0 }, 848 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 849 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 850 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 851 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 852 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 853 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 854 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 }, 855 856 /*98*/ { "cwde", FALSE, SDEP, 0, "cbw" }, 857 /*99*/ { "cdq", FALSE, SDEP, 0, "cwd" }, 858 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 }, 859 /*9b*/ { "wait", FALSE, NONE, 0, 0 }, 860 /*9c*/ { "pushf", FALSE, LONG, 0, 0 }, 861 /*9d*/ { "popf", FALSE, LONG, 0, 0 }, 862 /*9e*/ { "sahf", FALSE, NONE, 0, 0 }, 863 /*9f*/ { "lahf", FALSE, NONE, 0, 0 }, 864 865 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 }, 866 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 }, 867 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 }, 868 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 }, 869 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 }, 870 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 }, 871 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 }, 872 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 }, 873 874 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 }, 875 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 }, 876 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 }, 877 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 }, 878 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 }, 879 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 }, 880 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 }, 881 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 }, 882 883 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 884 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 885 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 886 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 887 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 888 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 889 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 890 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 }, 891 892 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 893 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 894 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 895 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 896 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 897 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 898 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 899 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 }, 900 901 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 }, 902 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 }, 903 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 }, 904 /*c3*/ { "ret", FALSE, NONE, 0, 0 }, 905 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 }, 906 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 }, 907 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 }, 908 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 }, 909 910 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 }, 911 /*c9*/ { "leave", FALSE, NONE, 0, 0 }, 912 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 }, 913 /*cb*/ { "lret", FALSE, NONE, 0, 0 }, 914 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 }, 915 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 }, 916 /*ce*/ { "into", FALSE, NONE, 0, 0 }, 917 /*cf*/ { "iret", FALSE, NONE, 0, 0 }, 918 919 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 }, 920 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 }, 921 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 }, 922 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 }, 923 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 }, 924 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 }, 925 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 }, 926 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 }, 927 928 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 }, 929 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 }, 930 /*da*/ { "", TRUE, NONE, 0, db_Esca }, 931 /*db*/ { "", TRUE, NONE, 0, db_Escb }, 932 /*dc*/ { "", TRUE, NONE, 0, db_Escc }, 933 /*dd*/ { "", TRUE, NONE, 0, db_Escd }, 934 /*de*/ { "", TRUE, NONE, 0, db_Esce }, 935 /*df*/ { "", TRUE, NONE, 0, db_Escf }, 936 937 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 }, 938 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 }, 939 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 }, 940 /*e3*/ { "jrcxz", FALSE, ADEP, op1(Db), "jecxz" }, 941 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 }, 942 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 }, 943 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 }, 944 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 }, 945 946 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 }, 947 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 }, 948 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 }, 949 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 }, 950 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 }, 951 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 }, 952 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 }, 953 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 }, 954 955 /*f0*/ { "", FALSE, NONE, 0, 0 }, 956 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 }, 957 /*f2*/ { "", FALSE, NONE, 0, 0 }, 958 /*f3*/ { "", FALSE, NONE, 0, 0 }, 959 /*f4*/ { "hlt", FALSE, NONE, 0, 0 }, 960 /*f5*/ { "cmc", FALSE, NONE, 0, 0 }, 961 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 }, 962 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 }, 963 964 /*f8*/ { "clc", FALSE, NONE, 0, 0 }, 965 /*f9*/ { "stc", FALSE, NONE, 0, 0 }, 966 /*fa*/ { "cli", FALSE, NONE, 0, 0 }, 967 /*fb*/ { "sti", FALSE, NONE, 0, 0 }, 968 /*fc*/ { "cld", FALSE, NONE, 0, 0 }, 969 /*fd*/ { "std", FALSE, NONE, 0, 0 }, 970 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 }, 971 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 }, 972 }; 973 974 static const struct inst db_bad_inst = 975 { "???", FALSE, NONE, 0, 0 } 976 ; 977 978 #define f_mod(rex, byte) ((byte)>>6) 979 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0)) 980 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 981 982 #define sib_ss(rex, byte) ((byte)>>6) 983 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0)) 984 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0)) 985 986 struct i_addr { 987 int is_reg; /* if reg, reg number is in 'disp' */ 988 int disp; 989 const char * base; 990 const char * index; 991 int ss; 992 }; 993 994 static const char * const db_reg[2][4][16] = { 995 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh", 996 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 997 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 998 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 999 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 1000 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 1001 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 1002 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}, 1003 1004 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil", 1005 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" }, 1006 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di", 1007 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" }, 1008 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 1009 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" }, 1010 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 1011 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }} 1012 }; 1013 1014 static const char * const db_seg_reg[8] = { 1015 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", "" 1016 }; 1017 1018 /* 1019 * lengths for size attributes 1020 */ 1021 static const int db_lengths[] = { 1022 1, /* BYTE */ 1023 2, /* WORD */ 1024 4, /* LONG */ 1025 8, /* QUAD */ 1026 4, /* SNGL */ 1027 8, /* DBLR */ 1028 10, /* EXTR */ 1029 }; 1030 1031 #define get_value_inc(result, loc, size, is_signed) \ 1032 result = db_get_value((loc), (size), (is_signed)); \ 1033 (loc) += (size); 1034 1035 static db_addr_t 1036 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, 1037 int size, const char *seg); 1038 static void db_print_address(const char *seg, int size, int rex, 1039 struct i_addr *addrp); 1040 static db_addr_t 1041 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm, 1042 struct i_addr *addrp); 1043 1044 /* 1045 * Read address at location and return updated location. 1046 */ 1047 static db_addr_t 1048 db_read_address(loc, short_addr, rex, regmodrm, addrp) 1049 db_addr_t loc; 1050 int short_addr; 1051 int rex; 1052 int regmodrm; 1053 struct i_addr * addrp; /* out */ 1054 { 1055 int mod, rm, sib, index, disp, size, have_sib; 1056 1057 mod = f_mod(rex, regmodrm); 1058 rm = f_rm(rex, regmodrm); 1059 1060 if (mod == 3) { 1061 addrp->is_reg = TRUE; 1062 addrp->disp = rm; 1063 return (loc); 1064 } 1065 addrp->is_reg = FALSE; 1066 addrp->index = NULL; 1067 1068 if (short_addr) 1069 size = LONG; 1070 else 1071 size = QUAD; 1072 1073 if ((rm & 0x7) == 4) { 1074 get_value_inc(sib, loc, 1, FALSE); 1075 rm = sib_base(rex, sib); 1076 index = sib_index(rex, sib); 1077 if (index != 4) 1078 addrp->index = db_reg[1][size][index]; 1079 addrp->ss = sib_ss(rex, sib); 1080 have_sib = 1; 1081 } else 1082 have_sib = 0; 1083 1084 switch (mod) { 1085 case 0: 1086 if (rm == 5) { 1087 get_value_inc(addrp->disp, loc, 4, FALSE); 1088 if (have_sib) 1089 addrp->base = NULL; 1090 else if (short_addr) 1091 addrp->base = "%eip"; 1092 else 1093 addrp->base = "%rip"; 1094 } else { 1095 addrp->disp = 0; 1096 addrp->base = db_reg[1][size][rm]; 1097 } 1098 break; 1099 1100 case 1: 1101 get_value_inc(disp, loc, 1, TRUE); 1102 addrp->disp = disp; 1103 addrp->base = db_reg[1][size][rm]; 1104 break; 1105 1106 case 2: 1107 get_value_inc(disp, loc, 4, FALSE); 1108 addrp->disp = disp; 1109 addrp->base = db_reg[1][size][rm]; 1110 break; 1111 } 1112 return (loc); 1113 } 1114 1115 static void 1116 db_print_address(seg, size, rex, addrp) 1117 const char * seg; 1118 int size; 1119 int rex; 1120 struct i_addr * addrp; 1121 { 1122 if (addrp->is_reg) { 1123 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]); 1124 return; 1125 } 1126 1127 if (seg) { 1128 db_printf("%s:", seg); 1129 } 1130 1131 if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL)) 1132 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY); 1133 if (addrp->base != NULL || addrp->index != NULL) { 1134 db_printf("("); 1135 if (addrp->base) 1136 db_printf("%s", addrp->base); 1137 if (addrp->index) 1138 db_printf(",%s,%d", addrp->index, 1<<addrp->ss); 1139 db_printf(")"); 1140 } 1141 } 1142 1143 /* 1144 * Disassemble floating-point ("escape") instruction 1145 * and return updated location. 1146 */ 1147 static db_addr_t 1148 db_disasm_esc(loc, inst, rex, short_addr, size, seg) 1149 db_addr_t loc; 1150 int inst; 1151 int rex; 1152 int short_addr; 1153 int size; 1154 const char * seg; 1155 { 1156 int regmodrm; 1157 const struct finst * fp; 1158 int mod; 1159 struct i_addr address; 1160 const char * name; 1161 1162 get_value_inc(regmodrm, loc, 1, FALSE); 1163 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)]; 1164 mod = f_mod(rex, regmodrm); 1165 if (mod != 3) { 1166 if (*fp->f_name == '\0') { 1167 db_printf("<bad instruction>"); 1168 return (loc); 1169 } 1170 /* 1171 * Normal address modes. 1172 */ 1173 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1174 db_printf("%s", fp->f_name); 1175 switch(fp->f_size) { 1176 case SNGL: 1177 db_printf("s"); 1178 break; 1179 case DBLR: 1180 db_printf("l"); 1181 break; 1182 case EXTR: 1183 db_printf("t"); 1184 break; 1185 case WORD: 1186 db_printf("s"); 1187 break; 1188 case LONG: 1189 db_printf("l"); 1190 break; 1191 case QUAD: 1192 db_printf("q"); 1193 break; 1194 default: 1195 break; 1196 } 1197 db_printf("\t"); 1198 db_print_address(seg, BYTE, rex, &address); 1199 } 1200 else { 1201 /* 1202 * 'reg-reg' - special formats 1203 */ 1204 switch (fp->f_rrmode) { 1205 case op2(ST,STI): 1206 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1207 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm)); 1208 break; 1209 case op2(STI,ST): 1210 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1211 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm)); 1212 break; 1213 case op1(STI): 1214 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name; 1215 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm)); 1216 break; 1217 case op1(X): 1218 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1219 if (*name == '\0') 1220 goto bad; 1221 db_printf("%s", name); 1222 break; 1223 case op1(XA): 1224 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)]; 1225 if (*name == '\0') 1226 goto bad; 1227 db_printf("%s\t%%ax", name); 1228 break; 1229 default: 1230 bad: 1231 db_printf("<bad instruction>"); 1232 break; 1233 } 1234 } 1235 1236 return (loc); 1237 } 1238 1239 /* 1240 * Disassemble instruction at 'loc'. 'altfmt' specifies an 1241 * (optional) alternate format. Return address of start of 1242 * next instruction. 1243 */ 1244 db_addr_t 1245 db_disasm(db_addr_t loc, bool altfmt) 1246 { 1247 int inst; 1248 int size; 1249 int short_addr; 1250 const char * seg; 1251 const struct inst * ip; 1252 const char * i_name; 1253 int i_size; 1254 int i_mode; 1255 int rex = 0; 1256 int regmodrm = 0; 1257 boolean_t first; 1258 int displ; 1259 int prefix; 1260 int rep, repne; 1261 int imm; 1262 int imm2; 1263 long imm64; 1264 int len; 1265 struct i_addr address; 1266 1267 get_value_inc(inst, loc, 1, FALSE); 1268 short_addr = FALSE; 1269 size = LONG; 1270 seg = NULL; 1271 1272 /* 1273 * Get prefixes 1274 */ 1275 rep = FALSE; 1276 repne = FALSE; 1277 prefix = TRUE; 1278 do { 1279 switch (inst) { 1280 case 0x66: /* data16 */ 1281 size = WORD; 1282 break; 1283 case 0x67: 1284 short_addr = TRUE; 1285 break; 1286 case 0x26: 1287 seg = "%es"; 1288 break; 1289 case 0x36: 1290 seg = "%ss"; 1291 break; 1292 case 0x2e: 1293 seg = "%cs"; 1294 break; 1295 case 0x3e: 1296 seg = "%ds"; 1297 break; 1298 case 0x64: 1299 seg = "%fs"; 1300 break; 1301 case 0x65: 1302 seg = "%gs"; 1303 break; 1304 case 0xf0: 1305 db_printf("lock "); 1306 break; 1307 /* 1308 * XXX repne/repe are only actually valid for MOVS, CMPS, 1309 * SCAS, LODS, STOS, INS, OUTS. 1310 */ 1311 case 0xf2: 1312 repne = TRUE; 1313 break; 1314 case 0xf3: 1315 rep = TRUE; 1316 break; 1317 default: 1318 prefix = FALSE; 1319 break; 1320 } 1321 if (inst >= 0x40 && inst < 0x50) { 1322 rex = inst; 1323 prefix = TRUE; 1324 } 1325 if (prefix) { 1326 get_value_inc(inst, loc, 1, FALSE); 1327 } 1328 } while (prefix); 1329 1330 if (inst >= 0xd8 && inst <= 0xdf) { 1331 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg); 1332 db_printf("\n"); 1333 return (loc); 1334 } 1335 1336 ip = &db_inst_table[inst]; 1337 while (ip->i_size == ESC) { 1338 get_value_inc(inst, loc, 1, FALSE); 1339 ip = ((const struct inst * const *)ip->i_extra)[inst>>4]; 1340 if (ip == NULL) { 1341 ip = &db_bad_inst; 1342 } 1343 else { 1344 ip = &ip[inst&0xf]; 1345 } 1346 } 1347 1348 if (ip->i_has_modrm) { 1349 get_value_inc(regmodrm, loc, 1, FALSE); 1350 loc = db_read_address(loc, short_addr, rex, regmodrm, &address); 1351 } 1352 1353 i_name = ip->i_name; 1354 i_size = ip->i_size; 1355 i_mode = ip->i_mode; 1356 1357 if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) == 3) { 1358 ip = &db_Grp9b[f_reg(rex, regmodrm)]; 1359 i_name = ip->i_name; 1360 i_size = ip->i_size; 1361 i_mode = ip->i_mode; 1362 } 1363 else if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 || 1364 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 || 1365 ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9 || 1366 ip->i_extra == db_Grp15) { 1367 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)]; 1368 } 1369 else if (ip->i_extra == db_Grp3) { 1370 ip = ip->i_extra; 1371 ip = &ip[f_reg(rex, regmodrm)]; 1372 i_name = ip->i_name; 1373 i_mode = ip->i_mode; 1374 } 1375 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) { 1376 ip = ip->i_extra; 1377 ip = &ip[f_reg(rex, regmodrm)]; 1378 i_name = ip->i_name; 1379 i_mode = ip->i_mode; 1380 i_size = ip->i_size; 1381 } 1382 1383 /* Special cases that don't fit well in the tables. */ 1384 if (ip->i_extra == db_Grp7 && f_mod(rex, regmodrm) == 3) { 1385 switch (regmodrm) { 1386 case 0xc1: 1387 i_name = "vmcall"; 1388 i_size = NONE; 1389 i_mode = 0; 1390 break; 1391 case 0xc2: 1392 i_name = "vmlaunch"; 1393 i_size = NONE; 1394 i_mode = 0; 1395 break; 1396 case 0xc3: 1397 i_name = "vmresume"; 1398 i_size = NONE; 1399 i_mode = 0; 1400 break; 1401 case 0xc4: 1402 i_name = "vmxoff"; 1403 i_size = NONE; 1404 i_mode = 0; 1405 break; 1406 case 0xc8: 1407 i_name = "monitor"; 1408 i_size = NONE; 1409 i_mode = 0; 1410 break; 1411 case 0xc9: 1412 i_name = "mwait"; 1413 i_size = NONE; 1414 i_mode = 0; 1415 break; 1416 case 0xca: 1417 i_name = "clac"; 1418 i_size = NONE; 1419 i_mode = 0; 1420 break; 1421 case 0xcb: 1422 i_name = "stac"; 1423 i_size = NONE; 1424 i_mode = 0; 1425 break; 1426 case 0xd0: 1427 i_name = "xgetbv"; 1428 i_size = NONE; 1429 i_mode = 0; 1430 break; 1431 case 0xd1: 1432 i_name = "xsetbv"; 1433 i_size = NONE; 1434 i_mode = 0; 1435 break; 1436 case 0xd8: 1437 i_name = "vmrun"; 1438 i_size = NONE; 1439 i_mode = 0; 1440 break; 1441 case 0xd9: 1442 i_name = "vmmcall"; 1443 i_size = NONE; 1444 i_mode = 0; 1445 break; 1446 case 0xda: 1447 i_name = "vmload"; 1448 i_size = NONE; 1449 i_mode = 0; 1450 break; 1451 case 0xdb: 1452 i_name = "vmsave"; 1453 i_size = NONE; 1454 i_mode = 0; 1455 break; 1456 case 0xdc: 1457 i_name = "stgi"; 1458 i_size = NONE; 1459 i_mode = 0; 1460 break; 1461 case 0xdd: 1462 i_name = "clgi"; 1463 i_size = NONE; 1464 i_mode = 0; 1465 break; 1466 case 0xde: 1467 i_name = "skinit"; 1468 i_size = NONE; 1469 i_mode = 0; 1470 break; 1471 case 0xdf: 1472 i_name = "invlpga"; 1473 i_size = NONE; 1474 i_mode = 0; 1475 break; 1476 case 0xf8: 1477 i_name = "swapgs"; 1478 i_size = NONE; 1479 i_mode = 0; 1480 break; 1481 case 0xf9: 1482 i_name = "rdtscp"; 1483 i_size = NONE; 1484 i_mode = 0; 1485 break; 1486 } 1487 } 1488 if (ip->i_extra == db_Grp15 && f_mod(rex, regmodrm) == 3) { 1489 i_name = db_Grp15b[f_reg(rex, regmodrm)]; 1490 i_size = NONE; 1491 i_mode = 0; 1492 } 1493 1494 /* Handle instructions identified by mandatory prefixes. */ 1495 if (rep == TRUE) { 1496 if (inst == 0x90) { 1497 i_name = "pause"; 1498 i_size = NONE; 1499 i_mode = 0; 1500 rep = FALSE; 1501 } else if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 && 1502 f_reg(rex, regmodrm) == 0x6) { 1503 i_name = "vmxon"; 1504 rep = FALSE; 1505 } 1506 } 1507 /* N.B., likely highly incomplete. */ 1508 if (repne) { 1509 if (ip == &db_inst_0f38fx[0] || ip == &db_inst_0f38fx[1]) 1510 repne = FALSE; 1511 } 1512 if (size == WORD) { 1513 if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 && 1514 f_reg(rex, regmodrm) == 0x6) { 1515 i_name = "vmclear"; 1516 } 1517 } 1518 if (rex & REX_W) { 1519 if (strcmp(i_name, "cwde") == 0) 1520 i_name = "cdqe"; 1521 else if (strcmp(i_name, "cmpxchg8b") == 0) 1522 i_name = "cmpxchg16b"; 1523 } 1524 1525 if (rep == TRUE) 1526 db_printf("repe "); /* XXX repe VS rep */ 1527 if (repne == TRUE) 1528 db_printf("repne "); 1529 1530 if (i_size == SDEP) { 1531 if (size == LONG) 1532 db_printf("%s", i_name); 1533 else 1534 db_printf("%s", (const char *)ip->i_extra); 1535 } else if (i_size == ADEP) { 1536 if (short_addr == FALSE) 1537 db_printf("%s", i_name); 1538 else 1539 db_printf("%s", (const char *)ip->i_extra); 1540 } 1541 else { 1542 db_printf("%s", i_name); 1543 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) { 1544 i_size = NONE; 1545 db_printf("q"); 1546 } 1547 if (i_size != NONE) { 1548 if (i_size == BYTE) { 1549 db_printf("b"); 1550 size = BYTE; 1551 } 1552 else if (i_size == WORD) { 1553 db_printf("w"); 1554 size = WORD; 1555 } 1556 else if (size == WORD) 1557 db_printf("w"); 1558 else { 1559 if (rex & REX_W) 1560 db_printf("q"); 1561 else 1562 db_printf("l"); 1563 } 1564 } 1565 } 1566 db_printf("\t"); 1567 for (first = TRUE; 1568 i_mode != 0; 1569 i_mode >>= 8, first = FALSE) 1570 { 1571 if (!first) 1572 db_printf(","); 1573 1574 switch (i_mode & 0xFF) { 1575 case E: 1576 db_print_address(seg, size, rex, &address); 1577 break; 1578 1579 case Eind: 1580 db_printf("*"); 1581 db_print_address(seg, size, rex, &address); 1582 break; 1583 1584 case El: 1585 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address); 1586 break; 1587 1588 case EL: 1589 db_print_address(seg, LONG, 0, &address); 1590 break; 1591 1592 case Ew: 1593 db_print_address(seg, WORD, rex, &address); 1594 break; 1595 1596 case Eb: 1597 db_print_address(seg, BYTE, rex, &address); 1598 break; 1599 1600 case R: 1601 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]); 1602 break; 1603 1604 case Rw: 1605 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]); 1606 break; 1607 1608 case Rq: 1609 db_printf("%s", db_reg[rex != 0 ? 1 : 0][QUAD][f_reg(rex, regmodrm)]); 1610 break; 1611 1612 case Ri: 1613 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]); 1614 break; 1615 1616 case Ril: 1617 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]); 1618 break; 1619 1620 case Rv: 1621 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_rm(rex, regmodrm)]); 1622 break; 1623 1624 case S: 1625 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]); 1626 break; 1627 1628 case Si: 1629 db_printf("%s", db_seg_reg[f_reg(rex, inst)]); 1630 break; 1631 1632 case A: 1633 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */ 1634 break; 1635 1636 case BX: 1637 if (seg) 1638 db_printf("%s:", seg); 1639 db_printf("(%s)", short_addr ? "%bx" : "%ebx"); 1640 break; 1641 1642 case CL: 1643 db_printf("%%cl"); 1644 break; 1645 1646 case DX: 1647 db_printf("%%dx"); 1648 break; 1649 1650 case SI: 1651 if (seg) 1652 db_printf("%s:", seg); 1653 db_printf("(%s)", short_addr ? "%si" : "%rsi"); 1654 break; 1655 1656 case DI: 1657 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi"); 1658 break; 1659 1660 case CR: 1661 db_printf("%%cr%d", f_reg(rex, regmodrm)); 1662 break; 1663 1664 case DR: 1665 db_printf("%%dr%d", f_reg(rex, regmodrm)); 1666 break; 1667 1668 case TR: 1669 db_printf("%%tr%d", f_reg(rex, regmodrm)); 1670 break; 1671 1672 case I: 1673 len = db_lengths[size]; 1674 get_value_inc(imm, loc, len, FALSE); 1675 db_printf("$%#r", imm); 1676 break; 1677 1678 case Is: 1679 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1680 get_value_inc(imm, loc, len, FALSE); 1681 db_printf("$%+#r", imm); 1682 break; 1683 1684 case Ib: 1685 get_value_inc(imm, loc, 1, FALSE); 1686 db_printf("$%#r", imm); 1687 break; 1688 1689 case Iba: 1690 get_value_inc(imm, loc, 1, FALSE); 1691 if (imm != 0x0a) 1692 db_printf("$%#r", imm); 1693 break; 1694 1695 case Ibs: 1696 get_value_inc(imm, loc, 1, TRUE); 1697 if (size == WORD) 1698 imm &= 0xFFFF; 1699 db_printf("$%+#r", imm); 1700 break; 1701 1702 case Iw: 1703 get_value_inc(imm, loc, 2, FALSE); 1704 db_printf("$%#r", imm); 1705 break; 1706 1707 case Ilq: 1708 len = db_lengths[rex & REX_W ? QUAD : LONG]; 1709 get_value_inc(imm64, loc, len, FALSE); 1710 db_printf("$%#lr", imm64); 1711 break; 1712 1713 case O: 1714 len = (short_addr ? 2 : 4); 1715 get_value_inc(displ, loc, len, FALSE); 1716 if (seg) 1717 db_printf("%s:%+#r",seg, displ); 1718 else 1719 db_printsym((db_addr_t)displ, DB_STGY_ANY); 1720 break; 1721 1722 case Db: 1723 get_value_inc(displ, loc, 1, TRUE); 1724 displ += loc; 1725 if (size == WORD) 1726 displ &= 0xFFFF; 1727 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1728 break; 1729 1730 case Dl: 1731 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size]; 1732 get_value_inc(displ, loc, len, FALSE); 1733 displ += loc; 1734 if (size == WORD) 1735 displ &= 0xFFFF; 1736 db_printsym((db_addr_t)displ, DB_STGY_XTRN); 1737 break; 1738 1739 case o1: 1740 db_printf("$1"); 1741 break; 1742 1743 case o3: 1744 db_printf("$3"); 1745 break; 1746 1747 case OS: 1748 len = db_lengths[size]; 1749 get_value_inc(imm, loc, len, FALSE); /* offset */ 1750 get_value_inc(imm2, loc, 2, FALSE); /* segment */ 1751 db_printf("$%#r,%#r", imm2, imm); 1752 break; 1753 } 1754 } 1755 db_printf("\n"); 1756 return (loc); 1757 }
Cache object: 4dedbc6528bf9bd5eec0e3068864a9e4
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