| 1 | /* Print i386 instructions for GDB, the GNU debugger. |
| 2 | Copyright (C) 1988, 89, 91, 93, 94, 95, 96, 97, 1998 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* |
| 22 | * 80386 instruction printer by Pace Willisson (pace@prep.ai.mit.edu) |
| 23 | * July 1988 |
| 24 | * modified by John Hassey (hassey@dg-rtp.dg.com) |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * The main tables describing the instructions is essentially a copy |
| 29 | * of the "Opcode Map" chapter (Appendix A) of the Intel 80386 |
| 30 | * Programmers Manual. Usually, there is a capital letter, followed |
| 31 | * by a small letter. The capital letter tell the addressing mode, |
| 32 | * and the small letter tells about the operand size. Refer to |
| 33 | * the Intel manual for details. |
| 34 | */ |
| 35 | |
| 36 | #include "dis-asm.h" |
| 37 | #include "sysdep.h" |
| 38 | #include "opintl.h" |
| 39 | |
| 40 | #define MAXLEN 20 |
| 41 | |
| 42 | #include <setjmp.h> |
| 43 | |
| 44 | #ifndef UNIXWARE_COMPAT |
| 45 | /* Set non-zero for broken, compatible instructions. Set to zero for |
| 46 | non-broken opcodes. */ |
| 47 | #define UNIXWARE_COMPAT 1 |
| 48 | #endif |
| 49 | |
| 50 | |
| 51 | static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *)); |
| 52 | |
| 53 | struct dis_private |
| 54 | { |
| 55 | /* Points to first byte not fetched. */ |
| 56 | bfd_byte *max_fetched; |
| 57 | bfd_byte the_buffer[MAXLEN]; |
| 58 | bfd_vma insn_start; |
| 59 | jmp_buf bailout; |
| 60 | }; |
| 61 | |
| 62 | /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive) |
| 63 | to ADDR (exclusive) are valid. Returns 1 for success, longjmps |
| 64 | on error. */ |
| 65 | #define FETCH_DATA(info, addr) \ |
| 66 | ((addr) <= ((struct dis_private *)(info->private_data))->max_fetched \ |
| 67 | ? 1 : fetch_data ((info), (addr))) |
| 68 | |
| 69 | static int |
| 70 | fetch_data (info, addr) |
| 71 | struct disassemble_info *info; |
| 72 | bfd_byte *addr; |
| 73 | { |
| 74 | int status; |
| 75 | struct dis_private *priv = (struct dis_private *)info->private_data; |
| 76 | bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer); |
| 77 | |
| 78 | status = (*info->read_memory_func) (start, |
| 79 | priv->max_fetched, |
| 80 | addr - priv->max_fetched, |
| 81 | info); |
| 82 | if (status != 0) |
| 83 | { |
| 84 | (*info->memory_error_func) (status, start, info); |
| 85 | longjmp (priv->bailout, 1); |
| 86 | } |
| 87 | else |
| 88 | priv->max_fetched = addr; |
| 89 | return 1; |
| 90 | } |
| 91 | |
| 92 | #define Eb OP_E, b_mode |
| 93 | #define indirEb OP_indirE, b_mode |
| 94 | #define Gb OP_G, b_mode |
| 95 | #define Ev OP_E, v_mode |
| 96 | #define indirEv OP_indirE, v_mode |
| 97 | #define Ew OP_E, w_mode |
| 98 | #define Ma OP_E, v_mode |
| 99 | #define M OP_E, 0 |
| 100 | #define Mp OP_E, 0 /* ? */ |
| 101 | #define Gv OP_G, v_mode |
| 102 | #define Gw OP_G, w_mode |
| 103 | #define Rw OP_rm, w_mode |
| 104 | #define Rd OP_rm, d_mode |
| 105 | #define Ib OP_I, b_mode |
| 106 | #define sIb OP_sI, b_mode /* sign extened byte */ |
| 107 | #define Iv OP_I, v_mode |
| 108 | #define Iw OP_I, w_mode |
| 109 | #define Jb OP_J, b_mode |
| 110 | #define Jv OP_J, v_mode |
| 111 | #if 0 |
| 112 | #define ONE OP_ONE, 0 |
| 113 | #endif |
| 114 | #define Cd OP_C, d_mode |
| 115 | #define Dd OP_D, d_mode |
| 116 | #define Td OP_T, d_mode |
| 117 | |
| 118 | #define eAX OP_REG, eAX_reg |
| 119 | #define eBX OP_REG, eBX_reg |
| 120 | #define eCX OP_REG, eCX_reg |
| 121 | #define eDX OP_REG, eDX_reg |
| 122 | #define eSP OP_REG, eSP_reg |
| 123 | #define eBP OP_REG, eBP_reg |
| 124 | #define eSI OP_REG, eSI_reg |
| 125 | #define eDI OP_REG, eDI_reg |
| 126 | #define AL OP_REG, al_reg |
| 127 | #define CL OP_REG, cl_reg |
| 128 | #define DL OP_REG, dl_reg |
| 129 | #define BL OP_REG, bl_reg |
| 130 | #define AH OP_REG, ah_reg |
| 131 | #define CH OP_REG, ch_reg |
| 132 | #define DH OP_REG, dh_reg |
| 133 | #define BH OP_REG, bh_reg |
| 134 | #define AX OP_REG, ax_reg |
| 135 | #define DX OP_REG, dx_reg |
| 136 | #define indirDX OP_REG, indir_dx_reg |
| 137 | |
| 138 | #define Sw OP_SEG, w_mode |
| 139 | #define Ap OP_DIR, lptr |
| 140 | #define Av OP_DIR, v_mode |
| 141 | #define Ob OP_OFF, b_mode |
| 142 | #define Ov OP_OFF, v_mode |
| 143 | #define Xb OP_DSreg, eSI_reg |
| 144 | #define Xv OP_DSreg, eSI_reg |
| 145 | #define Yb OP_ESreg, eDI_reg |
| 146 | #define Yv OP_ESreg, eDI_reg |
| 147 | #define DSBX OP_DSreg, eBX_reg |
| 148 | |
| 149 | #define es OP_REG, es_reg |
| 150 | #define ss OP_REG, ss_reg |
| 151 | #define cs OP_REG, cs_reg |
| 152 | #define ds OP_REG, ds_reg |
| 153 | #define fs OP_REG, fs_reg |
| 154 | #define gs OP_REG, gs_reg |
| 155 | |
| 156 | #define MX OP_MMX, 0 |
| 157 | #define EM OP_EM, v_mode |
| 158 | #define MS OP_MS, b_mode |
| 159 | |
| 160 | /* bits in sizeflag */ |
| 161 | #if 0 /* leave undefined until someone adds the extra flag to objdump */ |
| 162 | #define SUFFIX_ALWAYS 4 |
| 163 | #endif |
| 164 | #define AFLAG 2 |
| 165 | #define DFLAG 1 |
| 166 | |
| 167 | typedef void (*op_rtn) PARAMS ((int bytemode, int sizeflag)); |
| 168 | |
| 169 | static void OP_E PARAMS ((int, int)); |
| 170 | static void OP_G PARAMS ((int, int)); |
| 171 | static void OP_I PARAMS ((int, int)); |
| 172 | static void OP_indirE PARAMS ((int, int)); |
| 173 | static void OP_sI PARAMS ((int, int)); |
| 174 | static void OP_REG PARAMS ((int, int)); |
| 175 | static void OP_J PARAMS ((int, int)); |
| 176 | static void OP_DIR PARAMS ((int, int)); |
| 177 | static void OP_OFF PARAMS ((int, int)); |
| 178 | static void OP_ESreg PARAMS ((int, int)); |
| 179 | static void OP_DSreg PARAMS ((int, int)); |
| 180 | static void OP_SEG PARAMS ((int, int)); |
| 181 | static void OP_C PARAMS ((int, int)); |
| 182 | static void OP_D PARAMS ((int, int)); |
| 183 | static void OP_T PARAMS ((int, int)); |
| 184 | static void OP_rm PARAMS ((int, int)); |
| 185 | static void OP_ST PARAMS ((int, int)); |
| 186 | static void OP_STi PARAMS ((int, int)); |
| 187 | #if 0 |
| 188 | static void OP_ONE PARAMS ((int, int)); |
| 189 | #endif |
| 190 | static void OP_MMX PARAMS ((int, int)); |
| 191 | static void OP_EM PARAMS ((int, int)); |
| 192 | static void OP_MS PARAMS ((int, int)); |
| 193 | |
| 194 | static void append_seg PARAMS ((void)); |
| 195 | static void set_op PARAMS ((unsigned int op)); |
| 196 | static void putop PARAMS ((char *template, int sizeflag)); |
| 197 | static void dofloat PARAMS ((int sizeflag)); |
| 198 | static int get16 PARAMS ((void)); |
| 199 | static int get32 PARAMS ((void)); |
| 200 | static void ckprefix PARAMS ((void)); |
| 201 | static void ptr_reg PARAMS ((int, int)); |
| 202 | |
| 203 | #define b_mode 1 |
| 204 | #define v_mode 2 |
| 205 | #define w_mode 3 |
| 206 | #define d_mode 4 |
| 207 | |
| 208 | #define es_reg 100 |
| 209 | #define cs_reg 101 |
| 210 | #define ss_reg 102 |
| 211 | #define ds_reg 103 |
| 212 | #define fs_reg 104 |
| 213 | #define gs_reg 105 |
| 214 | #define eAX_reg 107 |
| 215 | #define eCX_reg 108 |
| 216 | #define eDX_reg 109 |
| 217 | #define eBX_reg 110 |
| 218 | #define eSP_reg 111 |
| 219 | #define eBP_reg 112 |
| 220 | #define eSI_reg 113 |
| 221 | #define eDI_reg 114 |
| 222 | |
| 223 | #define lptr 115 |
| 224 | |
| 225 | #define al_reg 116 |
| 226 | #define cl_reg 117 |
| 227 | #define dl_reg 118 |
| 228 | #define bl_reg 119 |
| 229 | #define ah_reg 120 |
| 230 | #define ch_reg 121 |
| 231 | #define dh_reg 122 |
| 232 | #define bh_reg 123 |
| 233 | |
| 234 | #define ax_reg 124 |
| 235 | #define cx_reg 125 |
| 236 | #define dx_reg 126 |
| 237 | #define bx_reg 127 |
| 238 | #define sp_reg 128 |
| 239 | #define bp_reg 129 |
| 240 | #define si_reg 130 |
| 241 | #define di_reg 131 |
| 242 | |
| 243 | #define indir_dx_reg 150 |
| 244 | |
| 245 | #define GRP1b NULL, NULL, 0 |
| 246 | #define GRP1S NULL, NULL, 1 |
| 247 | #define GRP1Ss NULL, NULL, 2 |
| 248 | #define GRP2b NULL, NULL, 3 |
| 249 | #define GRP2S NULL, NULL, 4 |
| 250 | #define GRP2b_one NULL, NULL, 5 |
| 251 | #define GRP2S_one NULL, NULL, 6 |
| 252 | #define GRP2b_cl NULL, NULL, 7 |
| 253 | #define GRP2S_cl NULL, NULL, 8 |
| 254 | #define GRP3b NULL, NULL, 9 |
| 255 | #define GRP3S NULL, NULL, 10 |
| 256 | #define GRP4 NULL, NULL, 11 |
| 257 | #define GRP5 NULL, NULL, 12 |
| 258 | #define GRP6 NULL, NULL, 13 |
| 259 | #define GRP7 NULL, NULL, 14 |
| 260 | #define GRP8 NULL, NULL, 15 |
| 261 | #define GRP9 NULL, NULL, 16 |
| 262 | #define GRP10 NULL, NULL, 17 |
| 263 | #define GRP11 NULL, NULL, 18 |
| 264 | #define GRP12 NULL, NULL, 19 |
| 265 | |
| 266 | #define FLOATCODE 50 |
| 267 | #define FLOAT NULL, NULL, FLOATCODE |
| 268 | |
| 269 | struct dis386 { |
| 270 | char *name; |
| 271 | op_rtn op1; |
| 272 | int bytemode1; |
| 273 | op_rtn op2; |
| 274 | int bytemode2; |
| 275 | op_rtn op3; |
| 276 | int bytemode3; |
| 277 | }; |
| 278 | |
| 279 | /* Upper case letters in the instruction names here are macros. |
| 280 | 'A' => print 'b' if no register operands or suffix_always is true |
| 281 | 'B' => print 'b' if suffix_always is true |
| 282 | 'E' => print 'e' if 32-bit form of jcxz |
| 283 | 'L' => print 'l' if suffix_always is true |
| 284 | 'N' => print 'n' if instruction has no wait "prefix" |
| 285 | 'P' => print 'w' or 'l' if instruction has an operand size prefix, |
| 286 | or suffix_always is true |
| 287 | 'Q' => print 'w' or 'l' if no register operands or suffix_always is true |
| 288 | 'R' => print 'w' or 'l' |
| 289 | 'S' => print 'w' or 'l' if suffix_always is true |
| 290 | 'W' => print 'b' or 'w' |
| 291 | */ |
| 292 | |
| 293 | static struct dis386 dis386[] = { |
| 294 | /* 00 */ |
| 295 | { "addB", Eb, Gb }, |
| 296 | { "addS", Ev, Gv }, |
| 297 | { "addB", Gb, Eb }, |
| 298 | { "addS", Gv, Ev }, |
| 299 | { "addB", AL, Ib }, |
| 300 | { "addS", eAX, Iv }, |
| 301 | { "pushP", es }, |
| 302 | { "popP", es }, |
| 303 | /* 08 */ |
| 304 | { "orB", Eb, Gb }, |
| 305 | { "orS", Ev, Gv }, |
| 306 | { "orB", Gb, Eb }, |
| 307 | { "orS", Gv, Ev }, |
| 308 | { "orB", AL, Ib }, |
| 309 | { "orS", eAX, Iv }, |
| 310 | { "pushP", cs }, |
| 311 | { "(bad)" }, /* 0x0f extended opcode escape */ |
| 312 | /* 10 */ |
| 313 | { "adcB", Eb, Gb }, |
| 314 | { "adcS", Ev, Gv }, |
| 315 | { "adcB", Gb, Eb }, |
| 316 | { "adcS", Gv, Ev }, |
| 317 | { "adcB", AL, Ib }, |
| 318 | { "adcS", eAX, Iv }, |
| 319 | { "pushP", ss }, |
| 320 | { "popP", ss }, |
| 321 | /* 18 */ |
| 322 | { "sbbB", Eb, Gb }, |
| 323 | { "sbbS", Ev, Gv }, |
| 324 | { "sbbB", Gb, Eb }, |
| 325 | { "sbbS", Gv, Ev }, |
| 326 | { "sbbB", AL, Ib }, |
| 327 | { "sbbS", eAX, Iv }, |
| 328 | { "pushP", ds }, |
| 329 | { "popP", ds }, |
| 330 | /* 20 */ |
| 331 | { "andB", Eb, Gb }, |
| 332 | { "andS", Ev, Gv }, |
| 333 | { "andB", Gb, Eb }, |
| 334 | { "andS", Gv, Ev }, |
| 335 | { "andB", AL, Ib }, |
| 336 | { "andS", eAX, Iv }, |
| 337 | { "(bad)" }, /* SEG ES prefix */ |
| 338 | { "daa" }, |
| 339 | /* 28 */ |
| 340 | { "subB", Eb, Gb }, |
| 341 | { "subS", Ev, Gv }, |
| 342 | { "subB", Gb, Eb }, |
| 343 | { "subS", Gv, Ev }, |
| 344 | { "subB", AL, Ib }, |
| 345 | { "subS", eAX, Iv }, |
| 346 | { "(bad)" }, /* SEG CS prefix */ |
| 347 | { "das" }, |
| 348 | /* 30 */ |
| 349 | { "xorB", Eb, Gb }, |
| 350 | { "xorS", Ev, Gv }, |
| 351 | { "xorB", Gb, Eb }, |
| 352 | { "xorS", Gv, Ev }, |
| 353 | { "xorB", AL, Ib }, |
| 354 | { "xorS", eAX, Iv }, |
| 355 | { "(bad)" }, /* SEG SS prefix */ |
| 356 | { "aaa" }, |
| 357 | /* 38 */ |
| 358 | { "cmpB", Eb, Gb }, |
| 359 | { "cmpS", Ev, Gv }, |
| 360 | { "cmpB", Gb, Eb }, |
| 361 | { "cmpS", Gv, Ev }, |
| 362 | { "cmpB", AL, Ib }, |
| 363 | { "cmpS", eAX, Iv }, |
| 364 | { "(bad)" }, /* SEG DS prefix */ |
| 365 | { "aas" }, |
| 366 | /* 40 */ |
| 367 | { "incS", eAX }, |
| 368 | { "incS", eCX }, |
| 369 | { "incS", eDX }, |
| 370 | { "incS", eBX }, |
| 371 | { "incS", eSP }, |
| 372 | { "incS", eBP }, |
| 373 | { "incS", eSI }, |
| 374 | { "incS", eDI }, |
| 375 | /* 48 */ |
| 376 | { "decS", eAX }, |
| 377 | { "decS", eCX }, |
| 378 | { "decS", eDX }, |
| 379 | { "decS", eBX }, |
| 380 | { "decS", eSP }, |
| 381 | { "decS", eBP }, |
| 382 | { "decS", eSI }, |
| 383 | { "decS", eDI }, |
| 384 | /* 50 */ |
| 385 | { "pushS", eAX }, |
| 386 | { "pushS", eCX }, |
| 387 | { "pushS", eDX }, |
| 388 | { "pushS", eBX }, |
| 389 | { "pushS", eSP }, |
| 390 | { "pushS", eBP }, |
| 391 | { "pushS", eSI }, |
| 392 | { "pushS", eDI }, |
| 393 | /* 58 */ |
| 394 | { "popS", eAX }, |
| 395 | { "popS", eCX }, |
| 396 | { "popS", eDX }, |
| 397 | { "popS", eBX }, |
| 398 | { "popS", eSP }, |
| 399 | { "popS", eBP }, |
| 400 | { "popS", eSI }, |
| 401 | { "popS", eDI }, |
| 402 | /* 60 */ |
| 403 | { "pushaP" }, |
| 404 | { "popaP" }, |
| 405 | { "boundS", Gv, Ma }, |
| 406 | { "arpl", Ew, Gw }, |
| 407 | { "(bad)" }, /* seg fs */ |
| 408 | { "(bad)" }, /* seg gs */ |
| 409 | { "(bad)" }, /* op size prefix */ |
| 410 | { "(bad)" }, /* adr size prefix */ |
| 411 | /* 68 */ |
| 412 | { "pushP", Iv }, /* 386 book wrong */ |
| 413 | { "imulS", Gv, Ev, Iv }, |
| 414 | { "pushP", sIb }, /* push of byte really pushes 2 or 4 bytes */ |
| 415 | { "imulS", Gv, Ev, sIb }, |
| 416 | { "insb", Yb, indirDX }, |
| 417 | { "insR", Yv, indirDX }, |
| 418 | { "outsb", indirDX, Xb }, |
| 419 | { "outsR", indirDX, Xv }, |
| 420 | /* 70 */ |
| 421 | { "jo", Jb }, |
| 422 | { "jno", Jb }, |
| 423 | { "jb", Jb }, |
| 424 | { "jae", Jb }, |
| 425 | { "je", Jb }, |
| 426 | { "jne", Jb }, |
| 427 | { "jbe", Jb }, |
| 428 | { "ja", Jb }, |
| 429 | /* 78 */ |
| 430 | { "js", Jb }, |
| 431 | { "jns", Jb }, |
| 432 | { "jp", Jb }, |
| 433 | { "jnp", Jb }, |
| 434 | { "jl", Jb }, |
| 435 | { "jge", Jb }, |
| 436 | { "jle", Jb }, |
| 437 | { "jg", Jb }, |
| 438 | /* 80 */ |
| 439 | { GRP1b }, |
| 440 | { GRP1S }, |
| 441 | { "(bad)" }, |
| 442 | { GRP1Ss }, |
| 443 | { "testB", Eb, Gb }, |
| 444 | { "testS", Ev, Gv }, |
| 445 | { "xchgB", Eb, Gb }, |
| 446 | { "xchgS", Ev, Gv }, |
| 447 | /* 88 */ |
| 448 | { "movB", Eb, Gb }, |
| 449 | { "movS", Ev, Gv }, |
| 450 | { "movB", Gb, Eb }, |
| 451 | { "movS", Gv, Ev }, |
| 452 | { "movQ", Ev, Sw }, |
| 453 | { "leaS", Gv, M }, |
| 454 | { "movQ", Sw, Ev }, |
| 455 | { "popQ", Ev }, |
| 456 | /* 90 */ |
| 457 | { "nop" }, |
| 458 | { "xchgS", eCX, eAX }, |
| 459 | { "xchgS", eDX, eAX }, |
| 460 | { "xchgS", eBX, eAX }, |
| 461 | { "xchgS", eSP, eAX }, |
| 462 | { "xchgS", eBP, eAX }, |
| 463 | { "xchgS", eSI, eAX }, |
| 464 | { "xchgS", eDI, eAX }, |
| 465 | /* 98 */ |
| 466 | { "cWtR" }, |
| 467 | { "cRtd" }, |
| 468 | { "lcallP", Ap }, |
| 469 | { "(bad)" }, /* fwait */ |
| 470 | { "pushfP" }, |
| 471 | { "popfP" }, |
| 472 | { "sahf" }, |
| 473 | { "lahf" }, |
| 474 | /* a0 */ |
| 475 | { "movB", AL, Ob }, |
| 476 | { "movS", eAX, Ov }, |
| 477 | { "movB", Ob, AL }, |
| 478 | { "movS", Ov, eAX }, |
| 479 | { "movsb", Yb, Xb }, |
| 480 | { "movsR", Yv, Xv }, |
| 481 | { "cmpsb", Xb, Yb }, |
| 482 | { "cmpsR", Xv, Yv }, |
| 483 | /* a8 */ |
| 484 | { "testB", AL, Ib }, |
| 485 | { "testS", eAX, Iv }, |
| 486 | { "stosB", Yb, AL }, |
| 487 | { "stosS", Yv, eAX }, |
| 488 | { "lodsB", AL, Xb }, |
| 489 | { "lodsS", eAX, Xv }, |
| 490 | { "scasB", AL, Yb }, |
| 491 | { "scasS", eAX, Yv }, |
| 492 | /* b0 */ |
| 493 | { "movB", AL, Ib }, |
| 494 | { "movB", CL, Ib }, |
| 495 | { "movB", DL, Ib }, |
| 496 | { "movB", BL, Ib }, |
| 497 | { "movB", AH, Ib }, |
| 498 | { "movB", CH, Ib }, |
| 499 | { "movB", DH, Ib }, |
| 500 | { "movB", BH, Ib }, |
| 501 | /* b8 */ |
| 502 | { "movS", eAX, Iv }, |
| 503 | { "movS", eCX, Iv }, |
| 504 | { "movS", eDX, Iv }, |
| 505 | { "movS", eBX, Iv }, |
| 506 | { "movS", eSP, Iv }, |
| 507 | { "movS", eBP, Iv }, |
| 508 | { "movS", eSI, Iv }, |
| 509 | { "movS", eDI, Iv }, |
| 510 | /* c0 */ |
| 511 | { GRP2b }, |
| 512 | { GRP2S }, |
| 513 | { "retP", Iw }, |
| 514 | { "retP" }, |
| 515 | { "lesS", Gv, Mp }, |
| 516 | { "ldsS", Gv, Mp }, |
| 517 | { "movA", Eb, Ib }, |
| 518 | { "movQ", Ev, Iv }, |
| 519 | /* c8 */ |
| 520 | { "enterP", Iw, Ib }, |
| 521 | { "leaveP" }, |
| 522 | { "lretP", Iw }, |
| 523 | { "lretP" }, |
| 524 | { "int3" }, |
| 525 | { "int", Ib }, |
| 526 | { "into" }, |
| 527 | { "iretP" }, |
| 528 | /* d0 */ |
| 529 | { GRP2b_one }, |
| 530 | { GRP2S_one }, |
| 531 | { GRP2b_cl }, |
| 532 | { GRP2S_cl }, |
| 533 | { "aam", sIb }, |
| 534 | { "aad", sIb }, |
| 535 | { "(bad)" }, |
| 536 | { "xlat", DSBX }, |
| 537 | /* d8 */ |
| 538 | { FLOAT }, |
| 539 | { FLOAT }, |
| 540 | { FLOAT }, |
| 541 | { FLOAT }, |
| 542 | { FLOAT }, |
| 543 | { FLOAT }, |
| 544 | { FLOAT }, |
| 545 | { FLOAT }, |
| 546 | /* e0 */ |
| 547 | { "loopne", Jb }, |
| 548 | { "loope", Jb }, |
| 549 | { "loop", Jb }, |
| 550 | { "jEcxz", Jb }, |
| 551 | { "inB", AL, Ib }, |
| 552 | { "inS", eAX, Ib }, |
| 553 | { "outB", Ib, AL }, |
| 554 | { "outS", Ib, eAX }, |
| 555 | /* e8 */ |
| 556 | { "callP", Av }, |
| 557 | { "jmpP", Jv }, |
| 558 | { "ljmpP", Ap }, |
| 559 | { "jmp", Jb }, |
| 560 | { "inB", AL, indirDX }, |
| 561 | { "inS", eAX, indirDX }, |
| 562 | { "outB", indirDX, AL }, |
| 563 | { "outS", indirDX, eAX }, |
| 564 | /* f0 */ |
| 565 | { "(bad)" }, /* lock prefix */ |
| 566 | { "(bad)" }, |
| 567 | { "(bad)" }, /* repne */ |
| 568 | { "(bad)" }, /* repz */ |
| 569 | { "hlt" }, |
| 570 | { "cmc" }, |
| 571 | { GRP3b }, |
| 572 | { GRP3S }, |
| 573 | /* f8 */ |
| 574 | { "clc" }, |
| 575 | { "stc" }, |
| 576 | { "cli" }, |
| 577 | { "sti" }, |
| 578 | { "cld" }, |
| 579 | { "std" }, |
| 580 | { GRP4 }, |
| 581 | { GRP5 }, |
| 582 | }; |
| 583 | |
| 584 | static struct dis386 dis386_twobyte[] = { |
| 585 | /* 00 */ |
| 586 | { GRP6 }, |
| 587 | { GRP7 }, |
| 588 | { "larS", Gv, Ew }, |
| 589 | { "lslS", Gv, Ew }, |
| 590 | { "(bad)" }, |
| 591 | { "(bad)" }, |
| 592 | { "clts" }, |
| 593 | { "(bad)" }, |
| 594 | /* 08 */ |
| 595 | { "invd" }, |
| 596 | { "wbinvd" }, |
| 597 | { "(bad)" }, |
| 598 | { "ud2a" }, |
| 599 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 600 | /* 10 */ |
| 601 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 602 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 603 | /* 18 */ |
| 604 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 605 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 606 | /* 20 */ |
| 607 | /* these are all backward in appendix A of the intel book */ |
| 608 | { "movL", Rd, Cd }, |
| 609 | { "movL", Rd, Dd }, |
| 610 | { "movL", Cd, Rd }, |
| 611 | { "movL", Dd, Rd }, |
| 612 | { "movL", Rd, Td }, |
| 613 | { "(bad)" }, |
| 614 | { "movL", Td, Rd }, |
| 615 | { "(bad)" }, |
| 616 | /* 28 */ |
| 617 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 618 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 619 | /* 30 */ |
| 620 | { "wrmsr" }, { "rdtsc" }, { "rdmsr" }, { "rdpmc" }, |
| 621 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 622 | /* 38 */ |
| 623 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 624 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 625 | /* 40 */ |
| 626 | { "cmovo", Gv,Ev }, { "cmovno", Gv,Ev }, { "cmovb", Gv,Ev }, { "cmovae", Gv,Ev }, |
| 627 | { "cmove", Gv,Ev }, { "cmovne", Gv,Ev }, { "cmovbe", Gv,Ev }, { "cmova", Gv,Ev }, |
| 628 | /* 48 */ |
| 629 | { "cmovs", Gv,Ev }, { "cmovns", Gv,Ev }, { "cmovp", Gv,Ev }, { "cmovnp", Gv,Ev }, |
| 630 | { "cmovl", Gv,Ev }, { "cmovge", Gv,Ev }, { "cmovle", Gv,Ev }, { "cmovg", Gv,Ev }, |
| 631 | /* 50 */ |
| 632 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 633 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 634 | /* 58 */ |
| 635 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 636 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 637 | /* 60 */ |
| 638 | { "punpcklbw", MX, EM }, |
| 639 | { "punpcklwd", MX, EM }, |
| 640 | { "punpckldq", MX, EM }, |
| 641 | { "packsswb", MX, EM }, |
| 642 | { "pcmpgtb", MX, EM }, |
| 643 | { "pcmpgtw", MX, EM }, |
| 644 | { "pcmpgtd", MX, EM }, |
| 645 | { "packuswb", MX, EM }, |
| 646 | /* 68 */ |
| 647 | { "punpckhbw", MX, EM }, |
| 648 | { "punpckhwd", MX, EM }, |
| 649 | { "punpckhdq", MX, EM }, |
| 650 | { "packssdw", MX, EM }, |
| 651 | { "(bad)" }, { "(bad)" }, |
| 652 | { "movd", MX, Ev }, |
| 653 | { "movq", MX, EM }, |
| 654 | /* 70 */ |
| 655 | { "(bad)" }, |
| 656 | { GRP10 }, |
| 657 | { GRP11 }, |
| 658 | { GRP12 }, |
| 659 | { "pcmpeqb", MX, EM }, |
| 660 | { "pcmpeqw", MX, EM }, |
| 661 | { "pcmpeqd", MX, EM }, |
| 662 | { "emms" }, |
| 663 | /* 78 */ |
| 664 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
| 665 | { "(bad)" }, { "(bad)" }, |
| 666 | { "movd", Ev, MX }, |
| 667 | { "movq", EM, MX }, |
| 668 | /* 80 */ |
| 669 | { "jo", Jv }, |
| 670 | { "jno", Jv }, |
| 671 | { "jb", Jv }, |
| 672 | { "jae", Jv }, |
| 673 | { "je", Jv }, |
| 674 | { "jne", Jv }, |
| 675 | { "jbe", Jv }, |
| 676 | { "ja", Jv }, |
| 677 | /* 88 */ |
| 678 | { "js", Jv }, |
| 679 | { "jns", Jv }, |
| 680 | { "jp", Jv }, |
| 681 | { "jnp", Jv }, |
| 682 | { "jl", Jv }, |
| 683 | { "jge", Jv }, |
| 684 | { "jle", Jv }, |
| 685 | { "jg", Jv }, |
| 686 | /* 90 */ |
| 687 | { "seto", Eb }, |
| 688 | { "setno", Eb }, |
| 689 | { "setb", Eb }, |
| 690 | { "setae", Eb }, |
| 691 | { "sete", Eb }, |
| 692 | { "setne", Eb }, |
| 693 | { "setbe", Eb }, |
| 694 | { "seta", Eb }, |
| 695 | /* 98 */ |
| 696 | { "sets", Eb }, |
| 697 | { "setns", Eb }, |
| 698 | { "setp", Eb }, |
| 699 | { "setnp", Eb }, |
| 700 | { "setl", Eb }, |
| 701 | { "setge", Eb }, |
| 702 | { "setle", Eb }, |
| 703 | { "setg", Eb }, |
| 704 | /* a0 */ |
| 705 | { "pushP", fs }, |
| 706 | { "popP", fs }, |
| 707 | { "cpuid" }, |
| 708 | { "btS", Ev, Gv }, |
| 709 | { "shldS", Ev, Gv, Ib }, |
| 710 | { "shldS", Ev, Gv, CL }, |
| 711 | { "(bad)" }, |
| 712 | { "(bad)" }, |
| 713 | /* a8 */ |
| 714 | { "pushP", gs }, |
| 715 | { "popP", gs }, |
| 716 | { "rsm" }, |
| 717 | { "btsS", Ev, Gv }, |
| 718 | { "shrdS", Ev, Gv, Ib }, |
| 719 | { "shrdS", Ev, Gv, CL }, |
| 720 | { "(bad)" }, |
| 721 | { "imulS", Gv, Ev }, |
| 722 | /* b0 */ |
| 723 | { "cmpxchgB", Eb, Gb }, |
| 724 | { "cmpxchgS", Ev, Gv }, |
| 725 | { "lssS", Gv, Mp }, /* 386 lists only Mp */ |
| 726 | { "btrS", Ev, Gv }, |
| 727 | { "lfsS", Gv, Mp }, /* 386 lists only Mp */ |
| 728 | { "lgsS", Gv, Mp }, /* 386 lists only Mp */ |
| 729 | { "movzbR", Gv, Eb }, |
| 730 | { "movzwR", Gv, Ew }, /* yes, there really is movzww ! */ |
| 731 | /* b8 */ |
| 732 | { "(bad)" }, |
| 733 | { "ud2b" }, |
| 734 | { GRP8 }, |
| 735 | { "btcS", Ev, Gv }, |
| 736 | { "bsfS", Gv, Ev }, |
| 737 | { "bsrS", Gv, Ev }, |
| 738 | { "movsbR", Gv, Eb }, |
| 739 | { "movswR", Gv, Ew }, /* yes, there really is movsww ! */ |
| 740 | /* c0 */ |
| 741 | { "xaddB", Eb, Gb }, |
| 742 | { "xaddS", Ev, Gv }, |
| 743 | { "(bad)" }, |
| 744 | { "(bad)" }, |
| 745 | { "(bad)" }, |
| 746 | { "(bad)" }, |
| 747 | { "(bad)" }, |
| 748 | { GRP9 }, |
| 749 | /* c8 */ |
| 750 | { "bswap", eAX }, /* bswap doesn't support 16 bit regs */ |
| 751 | { "bswap", eCX }, |
| 752 | { "bswap", eDX }, |
| 753 | { "bswap", eBX }, |
| 754 | { "bswap", eSP }, |
| 755 | { "bswap", eBP }, |
| 756 | { "bswap", eSI }, |
| 757 | { "bswap", eDI }, |
| 758 | /* d0 */ |
| 759 | { "(bad)" }, |
| 760 | { "psrlw", MX, EM }, |
| 761 | { "psrld", MX, EM }, |
| 762 | { "psrlq", MX, EM }, |
| 763 | { "(bad)" }, |
| 764 | { "pmullw", MX, EM }, |
| 765 | { "(bad)" }, { "(bad)" }, |
| 766 | /* d8 */ |
| 767 | { "psubusb", MX, EM }, |
| 768 | { "psubusw", MX, EM }, |
| 769 | { "(bad)" }, |
| 770 | { "pand", MX, EM }, |
| 771 | { "paddusb", MX, EM }, |
| 772 | { "paddusw", MX, EM }, |
| 773 | { "(bad)" }, |
| 774 | { "pandn", MX, EM }, |
| 775 | /* e0 */ |
| 776 | { "(bad)" }, |
| 777 | { "psraw", MX, EM }, |
| 778 | { "psrad", MX, EM }, |
| 779 | { "(bad)" }, |
| 780 | { "(bad)" }, |
| 781 | { "pmulhw", MX, EM }, |
| 782 | { "(bad)" }, { "(bad)" }, |
| 783 | /* e8 */ |
| 784 | { "psubsb", MX, EM }, |
| 785 | { "psubsw", MX, EM }, |
| 786 | { "(bad)" }, |
| 787 | { "por", MX, EM }, |
| 788 | { "paddsb", MX, EM }, |
| 789 | { "paddsw", MX, EM }, |
| 790 | { "(bad)" }, |
| 791 | { "pxor", MX, EM }, |
| 792 | /* f0 */ |
| 793 | { "(bad)" }, |
| 794 | { "psllw", MX, EM }, |
| 795 | { "pslld", MX, EM }, |
| 796 | { "psllq", MX, EM }, |
| 797 | { "(bad)" }, |
| 798 | { "pmaddwd", MX, EM }, |
| 799 | { "(bad)" }, { "(bad)" }, |
| 800 | /* f8 */ |
| 801 | { "psubb", MX, EM }, |
| 802 | { "psubw", MX, EM }, |
| 803 | { "psubd", MX, EM }, |
| 804 | { "(bad)" }, |
| 805 | { "paddb", MX, EM }, |
| 806 | { "paddw", MX, EM }, |
| 807 | { "paddd", MX, EM }, |
| 808 | { "(bad)" } |
| 809 | }; |
| 810 | |
| 811 | static const unsigned char onebyte_has_modrm[256] = { |
| 812 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, |
| 813 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, |
| 814 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, |
| 815 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, |
| 816 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 817 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 818 | 0,0,1,1,0,0,0,0,0,1,0,1,0,0,0,0, |
| 819 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 820 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 821 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 822 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 823 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 824 | 1,1,0,0,1,1,1,1,0,0,0,0,0,0,0,0, |
| 825 | 1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1, |
| 826 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 827 | 0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1 |
| 828 | }; |
| 829 | |
| 830 | static const unsigned char twobyte_has_modrm[256] = { |
| 831 | /* 00 */ 1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ |
| 832 | /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ |
| 833 | /* 20 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* 2f */ |
| 834 | /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ |
| 835 | /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4f */ |
| 836 | /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ |
| 837 | /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1, /* 6f */ |
| 838 | /* 70 */ 0,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1, /* 7f */ |
| 839 | /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ |
| 840 | /* 90 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 9f */ |
| 841 | /* a0 */ 0,0,0,1,1,1,1,1,0,0,0,1,1,1,1,1, /* af */ |
| 842 | /* b0 */ 1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1, /* bf */ |
| 843 | /* c0 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* cf */ |
| 844 | /* d0 */ 0,1,1,1,0,1,0,0,1,1,0,1,1,1,0,1, /* df */ |
| 845 | /* e0 */ 0,1,1,0,0,1,0,0,1,1,0,1,1,1,0,1, /* ef */ |
| 846 | /* f0 */ 0,1,1,1,0,1,0,0,1,1,1,0,1,1,1,0 /* ff */ |
| 847 | }; |
| 848 | |
| 849 | static char obuf[100]; |
| 850 | static char *obufp; |
| 851 | static char scratchbuf[100]; |
| 852 | static unsigned char *start_codep; |
| 853 | static unsigned char *codep; |
| 854 | static disassemble_info *the_info; |
| 855 | static int mod; |
| 856 | static int rm; |
| 857 | static int reg; |
| 858 | static void oappend PARAMS ((char *s)); |
| 859 | |
| 860 | static char *names32[]={ |
| 861 | "%eax","%ecx","%edx","%ebx", "%esp","%ebp","%esi","%edi", |
| 862 | }; |
| 863 | static char *names16[] = { |
| 864 | "%ax","%cx","%dx","%bx","%sp","%bp","%si","%di", |
| 865 | }; |
| 866 | static char *names8[] = { |
| 867 | "%al","%cl","%dl","%bl","%ah","%ch","%dh","%bh", |
| 868 | }; |
| 869 | static char *names_seg[] = { |
| 870 | "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", |
| 871 | }; |
| 872 | static char *index16[] = { |
| 873 | "bx+si","bx+di","bp+si","bp+di","si","di","bp","bx" |
| 874 | }; |
| 875 | |
| 876 | static struct dis386 grps[][8] = { |
| 877 | /* GRP1b */ |
| 878 | { |
| 879 | { "addA", Eb, Ib }, |
| 880 | { "orA", Eb, Ib }, |
| 881 | { "adcA", Eb, Ib }, |
| 882 | { "sbbA", Eb, Ib }, |
| 883 | { "andA", Eb, Ib }, |
| 884 | { "subA", Eb, Ib }, |
| 885 | { "xorA", Eb, Ib }, |
| 886 | { "cmpA", Eb, Ib } |
| 887 | }, |
| 888 | /* GRP1S */ |
| 889 | { |
| 890 | { "addQ", Ev, Iv }, |
| 891 | { "orQ", Ev, Iv }, |
| 892 | { "adcQ", Ev, Iv }, |
| 893 | { "sbbQ", Ev, Iv }, |
| 894 | { "andQ", Ev, Iv }, |
| 895 | { "subQ", Ev, Iv }, |
| 896 | { "xorQ", Ev, Iv }, |
| 897 | { "cmpQ", Ev, Iv } |
| 898 | }, |
| 899 | /* GRP1Ss */ |
| 900 | { |
| 901 | { "addQ", Ev, sIb }, |
| 902 | { "orQ", Ev, sIb }, |
| 903 | { "adcQ", Ev, sIb }, |
| 904 | { "sbbQ", Ev, sIb }, |
| 905 | { "andQ", Ev, sIb }, |
| 906 | { "subQ", Ev, sIb }, |
| 907 | { "xorQ", Ev, sIb }, |
| 908 | { "cmpQ", Ev, sIb } |
| 909 | }, |
| 910 | /* GRP2b */ |
| 911 | { |
| 912 | { "rolA", Eb, Ib }, |
| 913 | { "rorA", Eb, Ib }, |
| 914 | { "rclA", Eb, Ib }, |
| 915 | { "rcrA", Eb, Ib }, |
| 916 | { "shlA", Eb, Ib }, |
| 917 | { "shrA", Eb, Ib }, |
| 918 | { "(bad)" }, |
| 919 | { "sarA", Eb, Ib }, |
| 920 | }, |
| 921 | /* GRP2S */ |
| 922 | { |
| 923 | { "rolQ", Ev, Ib }, |
| 924 | { "rorQ", Ev, Ib }, |
| 925 | { "rclQ", Ev, Ib }, |
| 926 | { "rcrQ", Ev, Ib }, |
| 927 | { "shlQ", Ev, Ib }, |
| 928 | { "shrQ", Ev, Ib }, |
| 929 | { "(bad)" }, |
| 930 | { "sarQ", Ev, Ib }, |
| 931 | }, |
| 932 | /* GRP2b_one */ |
| 933 | { |
| 934 | { "rolA", Eb }, |
| 935 | { "rorA", Eb }, |
| 936 | { "rclA", Eb }, |
| 937 | { "rcrA", Eb }, |
| 938 | { "shlA", Eb }, |
| 939 | { "shrA", Eb }, |
| 940 | { "(bad)" }, |
| 941 | { "sarA", Eb }, |
| 942 | }, |
| 943 | /* GRP2S_one */ |
| 944 | { |
| 945 | { "rolQ", Ev }, |
| 946 | { "rorQ", Ev }, |
| 947 | { "rclQ", Ev }, |
| 948 | { "rcrQ", Ev }, |
| 949 | { "shlQ", Ev }, |
| 950 | { "shrQ", Ev }, |
| 951 | { "(bad)" }, |
| 952 | { "sarQ", Ev }, |
| 953 | }, |
| 954 | /* GRP2b_cl */ |
| 955 | { |
| 956 | { "rolA", Eb, CL }, |
| 957 | { "rorA", Eb, CL }, |
| 958 | { "rclA", Eb, CL }, |
| 959 | { "rcrA", Eb, CL }, |
| 960 | { "shlA", Eb, CL }, |
| 961 | { "shrA", Eb, CL }, |
| 962 | { "(bad)" }, |
| 963 | { "sarA", Eb, CL }, |
| 964 | }, |
| 965 | /* GRP2S_cl */ |
| 966 | { |
| 967 | { "rolQ", Ev, CL }, |
| 968 | { "rorQ", Ev, CL }, |
| 969 | { "rclQ", Ev, CL }, |
| 970 | { "rcrQ", Ev, CL }, |
| 971 | { "shlQ", Ev, CL }, |
| 972 | { "shrQ", Ev, CL }, |
| 973 | { "(bad)" }, |
| 974 | { "sarQ", Ev, CL } |
| 975 | }, |
| 976 | /* GRP3b */ |
| 977 | { |
| 978 | { "testA", Eb, Ib }, |
| 979 | { "(bad)", Eb }, |
| 980 | { "notA", Eb }, |
| 981 | { "negA", Eb }, |
| 982 | { "mulB", AL, Eb }, |
| 983 | { "imulB", AL, Eb }, |
| 984 | { "divB", AL, Eb }, |
| 985 | { "idivB", AL, Eb } |
| 986 | }, |
| 987 | /* GRP3S */ |
| 988 | { |
| 989 | { "testQ", Ev, Iv }, |
| 990 | { "(bad)" }, |
| 991 | { "notQ", Ev }, |
| 992 | { "negQ", Ev }, |
| 993 | { "mulS", eAX, Ev }, |
| 994 | { "imulS", eAX, Ev }, |
| 995 | { "divS", eAX, Ev }, |
| 996 | { "idivS", eAX, Ev }, |
| 997 | }, |
| 998 | /* GRP4 */ |
| 999 | { |
| 1000 | { "incA", Eb }, |
| 1001 | { "decA", Eb }, |
| 1002 | { "(bad)" }, |
| 1003 | { "(bad)" }, |
| 1004 | { "(bad)" }, |
| 1005 | { "(bad)" }, |
| 1006 | { "(bad)" }, |
| 1007 | { "(bad)" }, |
| 1008 | }, |
| 1009 | /* GRP5 */ |
| 1010 | { |
| 1011 | { "incQ", Ev }, |
| 1012 | { "decQ", Ev }, |
| 1013 | { "callP", indirEv }, |
| 1014 | { "lcallP", indirEv }, |
| 1015 | { "jmpP", indirEv }, |
| 1016 | { "ljmpP", indirEv }, |
| 1017 | { "pushQ", Ev }, |
| 1018 | { "(bad)" }, |
| 1019 | }, |
| 1020 | /* GRP6 */ |
| 1021 | { |
| 1022 | { "sldt", Ew }, |
| 1023 | { "str", Ew }, |
| 1024 | { "lldt", Ew }, |
| 1025 | { "ltr", Ew }, |
| 1026 | { "verr", Ew }, |
| 1027 | { "verw", Ew }, |
| 1028 | { "(bad)" }, |
| 1029 | { "(bad)" } |
| 1030 | }, |
| 1031 | /* GRP7 */ |
| 1032 | { |
| 1033 | { "sgdt", Ew }, |
| 1034 | { "sidt", Ew }, |
| 1035 | { "lgdt", Ew }, |
| 1036 | { "lidt", Ew }, |
| 1037 | { "smsw", Ew }, |
| 1038 | { "(bad)" }, |
| 1039 | { "lmsw", Ew }, |
| 1040 | { "invlpg", Ew }, |
| 1041 | }, |
| 1042 | /* GRP8 */ |
| 1043 | { |
| 1044 | { "(bad)" }, |
| 1045 | { "(bad)" }, |
| 1046 | { "(bad)" }, |
| 1047 | { "(bad)" }, |
| 1048 | { "btQ", Ev, Ib }, |
| 1049 | { "btsQ", Ev, Ib }, |
| 1050 | { "btrQ", Ev, Ib }, |
| 1051 | { "btcQ", Ev, Ib }, |
| 1052 | }, |
| 1053 | /* GRP9 */ |
| 1054 | { |
| 1055 | { "(bad)" }, |
| 1056 | { "cmpxchg8b", Ev }, |
| 1057 | { "(bad)" }, |
| 1058 | { "(bad)" }, |
| 1059 | { "(bad)" }, |
| 1060 | { "(bad)" }, |
| 1061 | { "(bad)" }, |
| 1062 | { "(bad)" }, |
| 1063 | }, |
| 1064 | /* GRP10 */ |
| 1065 | { |
| 1066 | { "(bad)" }, |
| 1067 | { "(bad)" }, |
| 1068 | { "psrlw", MS, Ib }, |
| 1069 | { "(bad)" }, |
| 1070 | { "psraw", MS, Ib }, |
| 1071 | { "(bad)" }, |
| 1072 | { "psllw", MS, Ib }, |
| 1073 | { "(bad)" }, |
| 1074 | }, |
| 1075 | /* GRP11 */ |
| 1076 | { |
| 1077 | { "(bad)" }, |
| 1078 | { "(bad)" }, |
| 1079 | { "psrld", MS, Ib }, |
| 1080 | { "(bad)" }, |
| 1081 | { "psrad", MS, Ib }, |
| 1082 | { "(bad)" }, |
| 1083 | { "pslld", MS, Ib }, |
| 1084 | { "(bad)" }, |
| 1085 | }, |
| 1086 | /* GRP12 */ |
| 1087 | { |
| 1088 | { "(bad)" }, |
| 1089 | { "(bad)" }, |
| 1090 | { "psrlq", MS, Ib }, |
| 1091 | { "(bad)" }, |
| 1092 | { "(bad)" }, |
| 1093 | { "(bad)" }, |
| 1094 | { "psllq", MS, Ib }, |
| 1095 | { "(bad)" }, |
| 1096 | } |
| 1097 | }; |
| 1098 | |
| 1099 | #define PREFIX_REPZ 1 |
| 1100 | #define PREFIX_REPNZ 2 |
| 1101 | #define PREFIX_LOCK 4 |
| 1102 | #define PREFIX_CS 8 |
| 1103 | #define PREFIX_SS 0x10 |
| 1104 | #define PREFIX_DS 0x20 |
| 1105 | #define PREFIX_ES 0x40 |
| 1106 | #define PREFIX_FS 0x80 |
| 1107 | #define PREFIX_GS 0x100 |
| 1108 | #define PREFIX_DATA 0x200 |
| 1109 | #define PREFIX_ADDR 0x400 |
| 1110 | #define PREFIX_FWAIT 0x800 |
| 1111 | |
| 1112 | static int prefixes; |
| 1113 | |
| 1114 | static void |
| 1115 | ckprefix () |
| 1116 | { |
| 1117 | prefixes = 0; |
| 1118 | while (1) |
| 1119 | { |
| 1120 | FETCH_DATA (the_info, codep + 1); |
| 1121 | switch (*codep) |
| 1122 | { |
| 1123 | case 0xf3: |
| 1124 | prefixes |= PREFIX_REPZ; |
| 1125 | break; |
| 1126 | case 0xf2: |
| 1127 | prefixes |= PREFIX_REPNZ; |
| 1128 | break; |
| 1129 | case 0xf0: |
| 1130 | prefixes |= PREFIX_LOCK; |
| 1131 | break; |
| 1132 | case 0x2e: |
| 1133 | prefixes |= PREFIX_CS; |
| 1134 | break; |
| 1135 | case 0x36: |
| 1136 | prefixes |= PREFIX_SS; |
| 1137 | break; |
| 1138 | case 0x3e: |
| 1139 | prefixes |= PREFIX_DS; |
| 1140 | break; |
| 1141 | case 0x26: |
| 1142 | prefixes |= PREFIX_ES; |
| 1143 | break; |
| 1144 | case 0x64: |
| 1145 | prefixes |= PREFIX_FS; |
| 1146 | break; |
| 1147 | case 0x65: |
| 1148 | prefixes |= PREFIX_GS; |
| 1149 | break; |
| 1150 | case 0x66: |
| 1151 | prefixes |= PREFIX_DATA; |
| 1152 | break; |
| 1153 | case 0x67: |
| 1154 | prefixes |= PREFIX_ADDR; |
| 1155 | break; |
| 1156 | case 0x9b: |
| 1157 | prefixes |= PREFIX_FWAIT; |
| 1158 | codep++; /* fwait is really an instruction */ |
| 1159 | return; /* so stop accumulating prefixes */ |
| 1160 | default: |
| 1161 | return; |
| 1162 | } |
| 1163 | codep++; |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | static char op1out[100], op2out[100], op3out[100]; |
| 1168 | static int op_ad, op_index[3]; |
| 1169 | static unsigned int op_address[3]; |
| 1170 | static unsigned int start_pc; |
| 1171 | |
| 1172 | \f |
| 1173 | /* |
| 1174 | * On the 386's of 1988, the maximum length of an instruction is 15 bytes. |
| 1175 | * (see topic "Redundant prefixes" in the "Differences from 8086" |
| 1176 | * section of the "Virtual 8086 Mode" chapter.) |
| 1177 | * 'pc' should be the address of this instruction, it will |
| 1178 | * be used to print the target address if this is a relative jump or call |
| 1179 | * The function returns the length of this instruction in bytes. |
| 1180 | */ |
| 1181 | |
| 1182 | int print_insn_x86 PARAMS ((bfd_vma pc, disassemble_info *info, int sizeflag)); |
| 1183 | |
| 1184 | int |
| 1185 | print_insn_i386 (pc, info) |
| 1186 | bfd_vma pc; |
| 1187 | disassemble_info *info; |
| 1188 | { |
| 1189 | int flags; |
| 1190 | if (info->mach == bfd_mach_i386_i386) |
| 1191 | flags = AFLAG|DFLAG; |
| 1192 | else if (info->mach == bfd_mach_i386_i8086) |
| 1193 | flags = 0; |
| 1194 | else |
| 1195 | abort (); |
| 1196 | return print_insn_x86 (pc, info, flags); |
| 1197 | } |
| 1198 | |
| 1199 | int |
| 1200 | print_insn_x86 (pc, info, sizeflag) |
| 1201 | bfd_vma pc; |
| 1202 | disassemble_info *info; |
| 1203 | int sizeflag; |
| 1204 | { |
| 1205 | struct dis386 *dp; |
| 1206 | int i; |
| 1207 | int two_source_ops; |
| 1208 | char *first, *second, *third; |
| 1209 | int needcomma; |
| 1210 | unsigned char need_modrm; |
| 1211 | |
| 1212 | struct dis_private priv; |
| 1213 | bfd_byte *inbuf = priv.the_buffer; |
| 1214 | |
| 1215 | /* The output looks better if we put 5 bytes on a line, since that |
| 1216 | puts long word instructions on a single line. */ |
| 1217 | info->bytes_per_line = 5; |
| 1218 | |
| 1219 | info->private_data = (PTR) &priv; |
| 1220 | priv.max_fetched = priv.the_buffer; |
| 1221 | priv.insn_start = pc; |
| 1222 | if (setjmp (priv.bailout) != 0) |
| 1223 | /* Error return. */ |
| 1224 | return -1; |
| 1225 | |
| 1226 | obuf[0] = 0; |
| 1227 | op1out[0] = 0; |
| 1228 | op2out[0] = 0; |
| 1229 | op3out[0] = 0; |
| 1230 | |
| 1231 | op_index[0] = op_index[1] = op_index[2] = -1; |
| 1232 | |
| 1233 | the_info = info; |
| 1234 | start_pc = pc; |
| 1235 | start_codep = inbuf; |
| 1236 | codep = inbuf; |
| 1237 | |
| 1238 | ckprefix (); |
| 1239 | |
| 1240 | FETCH_DATA (info, codep + 1); |
| 1241 | two_source_ops = (*codep == 0x62) || (*codep == 0xc8); |
| 1242 | |
| 1243 | obufp = obuf; |
| 1244 | |
| 1245 | if ((prefixes & PREFIX_FWAIT) |
| 1246 | && ((*codep < 0xd8) || (*codep > 0xdf))) |
| 1247 | { |
| 1248 | /* fwait not followed by floating point instruction. */ |
| 1249 | (*info->fprintf_func) (info->stream, "fwait"); |
| 1250 | /* There may be other prefixes. Skip any before the fwait. */ |
| 1251 | return codep - inbuf; |
| 1252 | } |
| 1253 | |
| 1254 | if (prefixes & PREFIX_REPZ) |
| 1255 | oappend ("repz "); |
| 1256 | if (prefixes & PREFIX_REPNZ) |
| 1257 | oappend ("repnz "); |
| 1258 | if (prefixes & PREFIX_LOCK) |
| 1259 | oappend ("lock "); |
| 1260 | |
| 1261 | if (prefixes & PREFIX_DATA) |
| 1262 | sizeflag ^= DFLAG; |
| 1263 | |
| 1264 | if (prefixes & PREFIX_ADDR) |
| 1265 | { |
| 1266 | sizeflag ^= AFLAG; |
| 1267 | if (sizeflag & AFLAG) |
| 1268 | oappend ("addr32 "); |
| 1269 | else |
| 1270 | oappend ("addr16 "); |
| 1271 | } |
| 1272 | |
| 1273 | if (*codep == 0x0f) |
| 1274 | { |
| 1275 | FETCH_DATA (info, codep + 2); |
| 1276 | dp = &dis386_twobyte[*++codep]; |
| 1277 | need_modrm = twobyte_has_modrm[*codep]; |
| 1278 | } |
| 1279 | else |
| 1280 | { |
| 1281 | dp = &dis386[*codep]; |
| 1282 | need_modrm = onebyte_has_modrm[*codep]; |
| 1283 | } |
| 1284 | codep++; |
| 1285 | |
| 1286 | if (need_modrm) |
| 1287 | { |
| 1288 | FETCH_DATA (info, codep + 1); |
| 1289 | mod = (*codep >> 6) & 3; |
| 1290 | reg = (*codep >> 3) & 7; |
| 1291 | rm = *codep & 7; |
| 1292 | } |
| 1293 | |
| 1294 | if (dp->name == NULL && dp->bytemode1 == FLOATCODE) |
| 1295 | { |
| 1296 | dofloat (sizeflag); |
| 1297 | } |
| 1298 | else |
| 1299 | { |
| 1300 | if (dp->name == NULL) |
| 1301 | dp = &grps[dp->bytemode1][reg]; |
| 1302 | |
| 1303 | putop (dp->name, sizeflag); |
| 1304 | |
| 1305 | obufp = op1out; |
| 1306 | op_ad = 2; |
| 1307 | if (dp->op1) |
| 1308 | (*dp->op1)(dp->bytemode1, sizeflag); |
| 1309 | |
| 1310 | obufp = op2out; |
| 1311 | op_ad = 1; |
| 1312 | if (dp->op2) |
| 1313 | (*dp->op2)(dp->bytemode2, sizeflag); |
| 1314 | |
| 1315 | obufp = op3out; |
| 1316 | op_ad = 0; |
| 1317 | if (dp->op3) |
| 1318 | (*dp->op3)(dp->bytemode3, sizeflag); |
| 1319 | } |
| 1320 | |
| 1321 | obufp = obuf + strlen (obuf); |
| 1322 | for (i = strlen (obuf); i < 6; i++) |
| 1323 | oappend (" "); |
| 1324 | oappend (" "); |
| 1325 | (*info->fprintf_func) (info->stream, "%s", obuf); |
| 1326 | |
| 1327 | /* The enter and bound instructions are printed with operands in the same |
| 1328 | order as the intel book; everything else is printed in reverse order. */ |
| 1329 | if (two_source_ops) |
| 1330 | { |
| 1331 | first = op1out; |
| 1332 | second = op2out; |
| 1333 | third = op3out; |
| 1334 | op_ad = op_index[0]; |
| 1335 | op_index[0] = op_index[2]; |
| 1336 | op_index[2] = op_ad; |
| 1337 | } |
| 1338 | else |
| 1339 | { |
| 1340 | first = op3out; |
| 1341 | second = op2out; |
| 1342 | third = op1out; |
| 1343 | } |
| 1344 | needcomma = 0; |
| 1345 | if (*first) |
| 1346 | { |
| 1347 | if (op_index[0] != -1) |
| 1348 | (*info->print_address_func) ((bfd_vma) op_address[op_index[0]], info); |
| 1349 | else |
| 1350 | (*info->fprintf_func) (info->stream, "%s", first); |
| 1351 | needcomma = 1; |
| 1352 | } |
| 1353 | if (*second) |
| 1354 | { |
| 1355 | if (needcomma) |
| 1356 | (*info->fprintf_func) (info->stream, ","); |
| 1357 | if (op_index[1] != -1) |
| 1358 | (*info->print_address_func) ((bfd_vma) op_address[op_index[1]], info); |
| 1359 | else |
| 1360 | (*info->fprintf_func) (info->stream, "%s", second); |
| 1361 | needcomma = 1; |
| 1362 | } |
| 1363 | if (*third) |
| 1364 | { |
| 1365 | if (needcomma) |
| 1366 | (*info->fprintf_func) (info->stream, ","); |
| 1367 | if (op_index[2] != -1) |
| 1368 | (*info->print_address_func) ((bfd_vma) op_address[op_index[2]], info); |
| 1369 | else |
| 1370 | (*info->fprintf_func) (info->stream, "%s", third); |
| 1371 | } |
| 1372 | return codep - inbuf; |
| 1373 | } |
| 1374 | |
| 1375 | static char *float_mem[] = { |
| 1376 | /* d8 */ |
| 1377 | "fadds", |
| 1378 | "fmuls", |
| 1379 | "fcoms", |
| 1380 | "fcomps", |
| 1381 | "fsubs", |
| 1382 | "fsubrs", |
| 1383 | "fdivs", |
| 1384 | "fdivrs", |
| 1385 | /* d9 */ |
| 1386 | "flds", |
| 1387 | "(bad)", |
| 1388 | "fsts", |
| 1389 | "fstps", |
| 1390 | "fldenv", |
| 1391 | "fldcw", |
| 1392 | "fNstenv", |
| 1393 | "fNstcw", |
| 1394 | /* da */ |
| 1395 | "fiaddl", |
| 1396 | "fimull", |
| 1397 | "ficoml", |
| 1398 | "ficompl", |
| 1399 | "fisubl", |
| 1400 | "fisubrl", |
| 1401 | "fidivl", |
| 1402 | "fidivrl", |
| 1403 | /* db */ |
| 1404 | "fildl", |
| 1405 | "(bad)", |
| 1406 | "fistl", |
| 1407 | "fistpl", |
| 1408 | "(bad)", |
| 1409 | "fldt", |
| 1410 | "(bad)", |
| 1411 | "fstpt", |
| 1412 | /* dc */ |
| 1413 | "faddl", |
| 1414 | "fmull", |
| 1415 | "fcoml", |
| 1416 | "fcompl", |
| 1417 | "fsubl", |
| 1418 | "fsubrl", |
| 1419 | "fdivl", |
| 1420 | "fdivrl", |
| 1421 | /* dd */ |
| 1422 | "fldl", |
| 1423 | "(bad)", |
| 1424 | "fstl", |
| 1425 | "fstpl", |
| 1426 | "frstor", |
| 1427 | "(bad)", |
| 1428 | "fNsave", |
| 1429 | "fNstsw", |
| 1430 | /* de */ |
| 1431 | "fiadd", |
| 1432 | "fimul", |
| 1433 | "ficom", |
| 1434 | "ficomp", |
| 1435 | "fisub", |
| 1436 | "fisubr", |
| 1437 | "fidiv", |
| 1438 | "fidivr", |
| 1439 | /* df */ |
| 1440 | "fild", |
| 1441 | "(bad)", |
| 1442 | "fist", |
| 1443 | "fistp", |
| 1444 | "fbld", |
| 1445 | "fildll", |
| 1446 | "fbstp", |
| 1447 | "fistpll", |
| 1448 | }; |
| 1449 | |
| 1450 | #define ST OP_ST, 0 |
| 1451 | #define STi OP_STi, 0 |
| 1452 | |
| 1453 | #define FGRPd9_2 NULL, NULL, 0 |
| 1454 | #define FGRPd9_4 NULL, NULL, 1 |
| 1455 | #define FGRPd9_5 NULL, NULL, 2 |
| 1456 | #define FGRPd9_6 NULL, NULL, 3 |
| 1457 | #define FGRPd9_7 NULL, NULL, 4 |
| 1458 | #define FGRPda_5 NULL, NULL, 5 |
| 1459 | #define FGRPdb_4 NULL, NULL, 6 |
| 1460 | #define FGRPde_3 NULL, NULL, 7 |
| 1461 | #define FGRPdf_4 NULL, NULL, 8 |
| 1462 | |
| 1463 | static struct dis386 float_reg[][8] = { |
| 1464 | /* d8 */ |
| 1465 | { |
| 1466 | { "fadd", ST, STi }, |
| 1467 | { "fmul", ST, STi }, |
| 1468 | { "fcom", STi }, |
| 1469 | { "fcomp", STi }, |
| 1470 | { "fsub", ST, STi }, |
| 1471 | { "fsubr", ST, STi }, |
| 1472 | { "fdiv", ST, STi }, |
| 1473 | { "fdivr", ST, STi }, |
| 1474 | }, |
| 1475 | /* d9 */ |
| 1476 | { |
| 1477 | { "fld", STi }, |
| 1478 | { "fxch", STi }, |
| 1479 | { FGRPd9_2 }, |
| 1480 | { "(bad)" }, |
| 1481 | { FGRPd9_4 }, |
| 1482 | { FGRPd9_5 }, |
| 1483 | { FGRPd9_6 }, |
| 1484 | { FGRPd9_7 }, |
| 1485 | }, |
| 1486 | /* da */ |
| 1487 | { |
| 1488 | { "fcmovb", ST, STi }, |
| 1489 | { "fcmove", ST, STi }, |
| 1490 | { "fcmovbe",ST, STi }, |
| 1491 | { "fcmovu", ST, STi }, |
| 1492 | { "(bad)" }, |
| 1493 | { FGRPda_5 }, |
| 1494 | { "(bad)" }, |
| 1495 | { "(bad)" }, |
| 1496 | }, |
| 1497 | /* db */ |
| 1498 | { |
| 1499 | { "fcmovnb",ST, STi }, |
| 1500 | { "fcmovne",ST, STi }, |
| 1501 | { "fcmovnbe",ST, STi }, |
| 1502 | { "fcmovnu",ST, STi }, |
| 1503 | { FGRPdb_4 }, |
| 1504 | { "fucomi", ST, STi }, |
| 1505 | { "fcomi", ST, STi }, |
| 1506 | { "(bad)" }, |
| 1507 | }, |
| 1508 | /* dc */ |
| 1509 | { |
| 1510 | { "fadd", STi, ST }, |
| 1511 | { "fmul", STi, ST }, |
| 1512 | { "(bad)" }, |
| 1513 | { "(bad)" }, |
| 1514 | #if UNIXWARE_COMPAT |
| 1515 | { "fsub", STi, ST }, |
| 1516 | { "fsubr", STi, ST }, |
| 1517 | { "fdiv", STi, ST }, |
| 1518 | { "fdivr", STi, ST }, |
| 1519 | #else |
| 1520 | { "fsubr", STi, ST }, |
| 1521 | { "fsub", STi, ST }, |
| 1522 | { "fdivr", STi, ST }, |
| 1523 | { "fdiv", STi, ST }, |
| 1524 | #endif |
| 1525 | }, |
| 1526 | /* dd */ |
| 1527 | { |
| 1528 | { "ffree", STi }, |
| 1529 | { "(bad)" }, |
| 1530 | { "fst", STi }, |
| 1531 | { "fstp", STi }, |
| 1532 | { "fucom", STi }, |
| 1533 | { "fucomp", STi }, |
| 1534 | { "(bad)" }, |
| 1535 | { "(bad)" }, |
| 1536 | }, |
| 1537 | /* de */ |
| 1538 | { |
| 1539 | { "faddp", STi, ST }, |
| 1540 | { "fmulp", STi, ST }, |
| 1541 | { "(bad)" }, |
| 1542 | { FGRPde_3 }, |
| 1543 | #if UNIXWARE_COMPAT |
| 1544 | { "fsubp", STi, ST }, |
| 1545 | { "fsubrp", STi, ST }, |
| 1546 | { "fdivp", STi, ST }, |
| 1547 | { "fdivrp", STi, ST }, |
| 1548 | #else |
| 1549 | { "fsubrp", STi, ST }, |
| 1550 | { "fsubp", STi, ST }, |
| 1551 | { "fdivrp", STi, ST }, |
| 1552 | { "fdivp", STi, ST }, |
| 1553 | #endif |
| 1554 | }, |
| 1555 | /* df */ |
| 1556 | { |
| 1557 | { "(bad)" }, |
| 1558 | { "(bad)" }, |
| 1559 | { "(bad)" }, |
| 1560 | { "(bad)" }, |
| 1561 | { FGRPdf_4 }, |
| 1562 | { "fucomip",ST, STi }, |
| 1563 | { "fcomip", ST, STi }, |
| 1564 | { "(bad)" }, |
| 1565 | }, |
| 1566 | }; |
| 1567 | |
| 1568 | |
| 1569 | static char *fgrps[][8] = { |
| 1570 | /* d9_2 0 */ |
| 1571 | { |
| 1572 | "fnop","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", |
| 1573 | }, |
| 1574 | |
| 1575 | /* d9_4 1 */ |
| 1576 | { |
| 1577 | "fchs","fabs","(bad)","(bad)","ftst","fxam","(bad)","(bad)", |
| 1578 | }, |
| 1579 | |
| 1580 | /* d9_5 2 */ |
| 1581 | { |
| 1582 | "fld1","fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","(bad)", |
| 1583 | }, |
| 1584 | |
| 1585 | /* d9_6 3 */ |
| 1586 | { |
| 1587 | "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp","fincstp", |
| 1588 | }, |
| 1589 | |
| 1590 | /* d9_7 4 */ |
| 1591 | { |
| 1592 | "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos", |
| 1593 | }, |
| 1594 | |
| 1595 | /* da_5 5 */ |
| 1596 | { |
| 1597 | "(bad)","fucompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", |
| 1598 | }, |
| 1599 | |
| 1600 | /* db_4 6 */ |
| 1601 | { |
| 1602 | "feni(287 only)","fdisi(287 only)","fNclex","fNinit", |
| 1603 | "fNsetpm(287 only)","(bad)","(bad)","(bad)", |
| 1604 | }, |
| 1605 | |
| 1606 | /* de_3 7 */ |
| 1607 | { |
| 1608 | "(bad)","fcompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", |
| 1609 | }, |
| 1610 | |
| 1611 | /* df_4 8 */ |
| 1612 | { |
| 1613 | "fNstsw","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", |
| 1614 | }, |
| 1615 | }; |
| 1616 | |
| 1617 | static void |
| 1618 | dofloat (sizeflag) |
| 1619 | int sizeflag; |
| 1620 | { |
| 1621 | struct dis386 *dp; |
| 1622 | unsigned char floatop; |
| 1623 | |
| 1624 | floatop = codep[-1]; |
| 1625 | |
| 1626 | if (mod != 3) |
| 1627 | { |
| 1628 | putop (float_mem[(floatop - 0xd8) * 8 + reg], sizeflag); |
| 1629 | obufp = op1out; |
| 1630 | OP_E (v_mode, sizeflag); |
| 1631 | return; |
| 1632 | } |
| 1633 | codep++; |
| 1634 | |
| 1635 | dp = &float_reg[floatop - 0xd8][reg]; |
| 1636 | if (dp->name == NULL) |
| 1637 | { |
| 1638 | putop (fgrps[dp->bytemode1][rm], sizeflag); |
| 1639 | /* instruction fnstsw is only one with strange arg */ |
| 1640 | if (floatop == 0xdf |
| 1641 | && FETCH_DATA (the_info, codep + 1) |
| 1642 | && *codep == 0xe0) |
| 1643 | strcpy (op1out, "%eax"); |
| 1644 | } |
| 1645 | else |
| 1646 | { |
| 1647 | putop (dp->name, sizeflag); |
| 1648 | obufp = op1out; |
| 1649 | if (dp->op1) |
| 1650 | (*dp->op1)(dp->bytemode1, sizeflag); |
| 1651 | obufp = op2out; |
| 1652 | if (dp->op2) |
| 1653 | (*dp->op2)(dp->bytemode2, sizeflag); |
| 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | /* ARGSUSED */ |
| 1658 | static void |
| 1659 | OP_ST (ignore, sizeflag) |
| 1660 | int ignore; |
| 1661 | int sizeflag; |
| 1662 | { |
| 1663 | oappend ("%st"); |
| 1664 | } |
| 1665 | |
| 1666 | /* ARGSUSED */ |
| 1667 | static void |
| 1668 | OP_STi (ignore, sizeflag) |
| 1669 | int ignore; |
| 1670 | int sizeflag; |
| 1671 | { |
| 1672 | sprintf (scratchbuf, "%%st(%d)", rm); |
| 1673 | oappend (scratchbuf); |
| 1674 | } |
| 1675 | |
| 1676 | |
| 1677 | /* capital letters in template are macros */ |
| 1678 | static void |
| 1679 | putop (template, sizeflag) |
| 1680 | char *template; |
| 1681 | int sizeflag; |
| 1682 | { |
| 1683 | char *p; |
| 1684 | |
| 1685 | for (p = template; *p; p++) |
| 1686 | { |
| 1687 | switch (*p) |
| 1688 | { |
| 1689 | default: |
| 1690 | *obufp++ = *p; |
| 1691 | break; |
| 1692 | case 'A': |
| 1693 | if (mod != 3 |
| 1694 | #ifdef SUFFIX_ALWAYS |
| 1695 | || (sizeflag & SUFFIX_ALWAYS) |
| 1696 | #endif |
| 1697 | ) |
| 1698 | *obufp++ = 'b'; |
| 1699 | break; |
| 1700 | case 'B': |
| 1701 | #ifdef SUFFIX_ALWAYS |
| 1702 | if (sizeflag & SUFFIX_ALWAYS) |
| 1703 | *obufp++ = 'b'; |
| 1704 | #endif |
| 1705 | break; |
| 1706 | case 'E': /* For jcxz/jecxz */ |
| 1707 | if (sizeflag & AFLAG) |
| 1708 | *obufp++ = 'e'; |
| 1709 | break; |
| 1710 | case 'L': |
| 1711 | #ifdef SUFFIX_ALWAYS |
| 1712 | if (sizeflag & SUFFIX_ALWAYS) |
| 1713 | *obufp++ = 'l'; |
| 1714 | #endif |
| 1715 | break; |
| 1716 | case 'N': |
| 1717 | if ((prefixes & PREFIX_FWAIT) == 0) |
| 1718 | *obufp++ = 'n'; |
| 1719 | break; |
| 1720 | case 'P': |
| 1721 | if ((prefixes & PREFIX_DATA) |
| 1722 | #ifdef SUFFIX_ALWAYS |
| 1723 | || (sizeflag & SUFFIX_ALWAYS) |
| 1724 | #endif |
| 1725 | ) |
| 1726 | { |
| 1727 | if (sizeflag & DFLAG) |
| 1728 | *obufp++ = 'l'; |
| 1729 | else |
| 1730 | *obufp++ = 'w'; |
| 1731 | } |
| 1732 | break; |
| 1733 | case 'Q': |
| 1734 | if (mod != 3 |
| 1735 | #ifdef SUFFIX_ALWAYS |
| 1736 | || (sizeflag & SUFFIX_ALWAYS) |
| 1737 | #endif |
| 1738 | ) |
| 1739 | { |
| 1740 | if (sizeflag & DFLAG) |
| 1741 | *obufp++ = 'l'; |
| 1742 | else |
| 1743 | *obufp++ = 'w'; |
| 1744 | } |
| 1745 | break; |
| 1746 | case 'R': |
| 1747 | if (sizeflag & DFLAG) |
| 1748 | *obufp++ = 'l'; |
| 1749 | else |
| 1750 | *obufp++ = 'w'; |
| 1751 | break; |
| 1752 | case 'S': |
| 1753 | #ifdef SUFFIX_ALWAYS |
| 1754 | if (sizeflag & SUFFIX_ALWAYS) |
| 1755 | { |
| 1756 | if (sizeflag & DFLAG) |
| 1757 | *obufp++ = 'l'; |
| 1758 | else |
| 1759 | *obufp++ = 'w'; |
| 1760 | } |
| 1761 | #endif |
| 1762 | break; |
| 1763 | case 'W': |
| 1764 | /* operand size flag for cwtl, cbtw */ |
| 1765 | if (sizeflag & DFLAG) |
| 1766 | *obufp++ = 'w'; |
| 1767 | else |
| 1768 | *obufp++ = 'b'; |
| 1769 | break; |
| 1770 | } |
| 1771 | } |
| 1772 | *obufp = 0; |
| 1773 | } |
| 1774 | |
| 1775 | static void |
| 1776 | oappend (s) |
| 1777 | char *s; |
| 1778 | { |
| 1779 | strcpy (obufp, s); |
| 1780 | obufp += strlen (s); |
| 1781 | } |
| 1782 | |
| 1783 | static void |
| 1784 | append_seg () |
| 1785 | { |
| 1786 | if (prefixes & PREFIX_CS) |
| 1787 | oappend ("%cs:"); |
| 1788 | if (prefixes & PREFIX_DS) |
| 1789 | oappend ("%ds:"); |
| 1790 | if (prefixes & PREFIX_SS) |
| 1791 | oappend ("%ss:"); |
| 1792 | if (prefixes & PREFIX_ES) |
| 1793 | oappend ("%es:"); |
| 1794 | if (prefixes & PREFIX_FS) |
| 1795 | oappend ("%fs:"); |
| 1796 | if (prefixes & PREFIX_GS) |
| 1797 | oappend ("%gs:"); |
| 1798 | } |
| 1799 | |
| 1800 | static void |
| 1801 | OP_indirE (bytemode, sizeflag) |
| 1802 | int bytemode; |
| 1803 | int sizeflag; |
| 1804 | { |
| 1805 | oappend ("*"); |
| 1806 | OP_E (bytemode, sizeflag); |
| 1807 | } |
| 1808 | |
| 1809 | static void |
| 1810 | OP_E (bytemode, sizeflag) |
| 1811 | int bytemode; |
| 1812 | int sizeflag; |
| 1813 | { |
| 1814 | int disp; |
| 1815 | |
| 1816 | /* skip mod/rm byte */ |
| 1817 | codep++; |
| 1818 | |
| 1819 | if (mod == 3) |
| 1820 | { |
| 1821 | switch (bytemode) |
| 1822 | { |
| 1823 | case b_mode: |
| 1824 | oappend (names8[rm]); |
| 1825 | break; |
| 1826 | case w_mode: |
| 1827 | oappend (names16[rm]); |
| 1828 | break; |
| 1829 | case v_mode: |
| 1830 | if (sizeflag & DFLAG) |
| 1831 | oappend (names32[rm]); |
| 1832 | else |
| 1833 | oappend (names16[rm]); |
| 1834 | break; |
| 1835 | default: |
| 1836 | oappend ("<bad dis table>"); |
| 1837 | break; |
| 1838 | } |
| 1839 | return; |
| 1840 | } |
| 1841 | |
| 1842 | disp = 0; |
| 1843 | append_seg (); |
| 1844 | |
| 1845 | if (sizeflag & AFLAG) /* 32 bit address mode */ |
| 1846 | { |
| 1847 | int havesib; |
| 1848 | int havebase; |
| 1849 | int base; |
| 1850 | int index = 0; |
| 1851 | int scale = 0; |
| 1852 | |
| 1853 | havesib = 0; |
| 1854 | havebase = 1; |
| 1855 | base = rm; |
| 1856 | |
| 1857 | if (base == 4) |
| 1858 | { |
| 1859 | havesib = 1; |
| 1860 | FETCH_DATA (the_info, codep + 1); |
| 1861 | scale = (*codep >> 6) & 3; |
| 1862 | index = (*codep >> 3) & 7; |
| 1863 | base = *codep & 7; |
| 1864 | codep++; |
| 1865 | } |
| 1866 | |
| 1867 | switch (mod) |
| 1868 | { |
| 1869 | case 0: |
| 1870 | if (base == 5) |
| 1871 | { |
| 1872 | havebase = 0; |
| 1873 | disp = get32 (); |
| 1874 | } |
| 1875 | break; |
| 1876 | case 1: |
| 1877 | FETCH_DATA (the_info, codep + 1); |
| 1878 | disp = *codep++; |
| 1879 | if ((disp & 0x80) != 0) |
| 1880 | disp -= 0x100; |
| 1881 | break; |
| 1882 | case 2: |
| 1883 | disp = get32 (); |
| 1884 | break; |
| 1885 | } |
| 1886 | |
| 1887 | if (mod != 0 || base == 5) |
| 1888 | { |
| 1889 | sprintf (scratchbuf, "0x%x", disp); |
| 1890 | oappend (scratchbuf); |
| 1891 | } |
| 1892 | |
| 1893 | if (havebase || (havesib && (index != 4 || scale != 0))) |
| 1894 | { |
| 1895 | oappend ("("); |
| 1896 | if (havebase) |
| 1897 | oappend (names32[base]); |
| 1898 | if (havesib) |
| 1899 | { |
| 1900 | if (index != 4) |
| 1901 | { |
| 1902 | sprintf (scratchbuf, ",%s", names32[index]); |
| 1903 | oappend (scratchbuf); |
| 1904 | } |
| 1905 | sprintf (scratchbuf, ",%d", 1 << scale); |
| 1906 | oappend (scratchbuf); |
| 1907 | } |
| 1908 | oappend (")"); |
| 1909 | } |
| 1910 | } |
| 1911 | else |
| 1912 | { /* 16 bit address mode */ |
| 1913 | switch (mod) |
| 1914 | { |
| 1915 | case 0: |
| 1916 | if (rm == 6) |
| 1917 | { |
| 1918 | disp = get16 (); |
| 1919 | if ((disp & 0x8000) != 0) |
| 1920 | disp -= 0x10000; |
| 1921 | } |
| 1922 | break; |
| 1923 | case 1: |
| 1924 | FETCH_DATA (the_info, codep + 1); |
| 1925 | disp = *codep++; |
| 1926 | if ((disp & 0x80) != 0) |
| 1927 | disp -= 0x100; |
| 1928 | break; |
| 1929 | case 2: |
| 1930 | disp = get16 (); |
| 1931 | if ((disp & 0x8000) != 0) |
| 1932 | disp -= 0x10000; |
| 1933 | break; |
| 1934 | } |
| 1935 | |
| 1936 | if (mod != 0 || rm == 6) |
| 1937 | { |
| 1938 | sprintf (scratchbuf, "0x%x", disp); |
| 1939 | oappend (scratchbuf); |
| 1940 | } |
| 1941 | |
| 1942 | if (mod != 0 || rm != 6) |
| 1943 | { |
| 1944 | oappend ("("); |
| 1945 | oappend (index16[rm]); |
| 1946 | oappend (")"); |
| 1947 | } |
| 1948 | } |
| 1949 | } |
| 1950 | |
| 1951 | #define INTERNAL_DISASSEMBLER_ERROR _("<internal disassembler error>") |
| 1952 | |
| 1953 | static void |
| 1954 | OP_G (bytemode, sizeflag) |
| 1955 | int bytemode; |
| 1956 | int sizeflag; |
| 1957 | { |
| 1958 | switch (bytemode) |
| 1959 | { |
| 1960 | case b_mode: |
| 1961 | oappend (names8[reg]); |
| 1962 | break; |
| 1963 | case w_mode: |
| 1964 | oappend (names16[reg]); |
| 1965 | break; |
| 1966 | case d_mode: |
| 1967 | oappend (names32[reg]); |
| 1968 | break; |
| 1969 | case v_mode: |
| 1970 | if (sizeflag & DFLAG) |
| 1971 | oappend (names32[reg]); |
| 1972 | else |
| 1973 | oappend (names16[reg]); |
| 1974 | break; |
| 1975 | default: |
| 1976 | oappend (INTERNAL_DISASSEMBLER_ERROR); |
| 1977 | break; |
| 1978 | } |
| 1979 | } |
| 1980 | |
| 1981 | static int |
| 1982 | get32 () |
| 1983 | { |
| 1984 | int x = 0; |
| 1985 | |
| 1986 | FETCH_DATA (the_info, codep + 4); |
| 1987 | x = *codep++ & 0xff; |
| 1988 | x |= (*codep++ & 0xff) << 8; |
| 1989 | x |= (*codep++ & 0xff) << 16; |
| 1990 | x |= (*codep++ & 0xff) << 24; |
| 1991 | return x; |
| 1992 | } |
| 1993 | |
| 1994 | static int |
| 1995 | get16 () |
| 1996 | { |
| 1997 | int x = 0; |
| 1998 | |
| 1999 | FETCH_DATA (the_info, codep + 2); |
| 2000 | x = *codep++ & 0xff; |
| 2001 | x |= (*codep++ & 0xff) << 8; |
| 2002 | return x; |
| 2003 | } |
| 2004 | |
| 2005 | static void |
| 2006 | set_op (op) |
| 2007 | unsigned int op; |
| 2008 | { |
| 2009 | op_index[op_ad] = op_ad; |
| 2010 | op_address[op_ad] = op; |
| 2011 | } |
| 2012 | |
| 2013 | static void |
| 2014 | OP_REG (code, sizeflag) |
| 2015 | int code; |
| 2016 | int sizeflag; |
| 2017 | { |
| 2018 | char *s; |
| 2019 | |
| 2020 | switch (code) |
| 2021 | { |
| 2022 | case indir_dx_reg: s = "(%dx)"; break; |
| 2023 | case ax_reg: case cx_reg: case dx_reg: case bx_reg: |
| 2024 | case sp_reg: case bp_reg: case si_reg: case di_reg: |
| 2025 | s = names16[code - ax_reg]; |
| 2026 | break; |
| 2027 | case es_reg: case ss_reg: case cs_reg: |
| 2028 | case ds_reg: case fs_reg: case gs_reg: |
| 2029 | s = names_seg[code - es_reg]; |
| 2030 | break; |
| 2031 | case al_reg: case ah_reg: case cl_reg: case ch_reg: |
| 2032 | case dl_reg: case dh_reg: case bl_reg: case bh_reg: |
| 2033 | s = names8[code - al_reg]; |
| 2034 | break; |
| 2035 | case eAX_reg: case eCX_reg: case eDX_reg: case eBX_reg: |
| 2036 | case eSP_reg: case eBP_reg: case eSI_reg: case eDI_reg: |
| 2037 | if (sizeflag & DFLAG) |
| 2038 | s = names32[code - eAX_reg]; |
| 2039 | else |
| 2040 | s = names16[code - eAX_reg]; |
| 2041 | break; |
| 2042 | default: |
| 2043 | s = INTERNAL_DISASSEMBLER_ERROR; |
| 2044 | break; |
| 2045 | } |
| 2046 | oappend (s); |
| 2047 | } |
| 2048 | |
| 2049 | static void |
| 2050 | OP_I (bytemode, sizeflag) |
| 2051 | int bytemode; |
| 2052 | int sizeflag; |
| 2053 | { |
| 2054 | int op; |
| 2055 | |
| 2056 | switch (bytemode) |
| 2057 | { |
| 2058 | case b_mode: |
| 2059 | FETCH_DATA (the_info, codep + 1); |
| 2060 | op = *codep++ & 0xff; |
| 2061 | break; |
| 2062 | case v_mode: |
| 2063 | if (sizeflag & DFLAG) |
| 2064 | op = get32 (); |
| 2065 | else |
| 2066 | op = get16 (); |
| 2067 | break; |
| 2068 | case w_mode: |
| 2069 | op = get16 (); |
| 2070 | break; |
| 2071 | default: |
| 2072 | oappend (INTERNAL_DISASSEMBLER_ERROR); |
| 2073 | return; |
| 2074 | } |
| 2075 | sprintf (scratchbuf, "$0x%x", op); |
| 2076 | oappend (scratchbuf); |
| 2077 | } |
| 2078 | |
| 2079 | static void |
| 2080 | OP_sI (bytemode, sizeflag) |
| 2081 | int bytemode; |
| 2082 | int sizeflag; |
| 2083 | { |
| 2084 | int op; |
| 2085 | |
| 2086 | switch (bytemode) |
| 2087 | { |
| 2088 | case b_mode: |
| 2089 | FETCH_DATA (the_info, codep + 1); |
| 2090 | op = *codep++; |
| 2091 | if ((op & 0x80) != 0) |
| 2092 | op -= 0x100; |
| 2093 | break; |
| 2094 | case v_mode: |
| 2095 | if (sizeflag & DFLAG) |
| 2096 | op = get32 (); |
| 2097 | else |
| 2098 | { |
| 2099 | op = get16(); |
| 2100 | if ((op & 0x8000) != 0) |
| 2101 | op -= 0x10000; |
| 2102 | } |
| 2103 | break; |
| 2104 | case w_mode: |
| 2105 | op = get16 (); |
| 2106 | if ((op & 0x8000) != 0) |
| 2107 | op -= 0x10000; |
| 2108 | break; |
| 2109 | default: |
| 2110 | oappend (INTERNAL_DISASSEMBLER_ERROR); |
| 2111 | return; |
| 2112 | } |
| 2113 | sprintf (scratchbuf, "$0x%x", op); |
| 2114 | oappend (scratchbuf); |
| 2115 | } |
| 2116 | |
| 2117 | static void |
| 2118 | OP_J (bytemode, sizeflag) |
| 2119 | int bytemode; |
| 2120 | int sizeflag; |
| 2121 | { |
| 2122 | int disp; |
| 2123 | int mask = -1; |
| 2124 | |
| 2125 | switch (bytemode) |
| 2126 | { |
| 2127 | case b_mode: |
| 2128 | FETCH_DATA (the_info, codep + 1); |
| 2129 | disp = *codep++; |
| 2130 | if ((disp & 0x80) != 0) |
| 2131 | disp -= 0x100; |
| 2132 | break; |
| 2133 | case v_mode: |
| 2134 | if (sizeflag & DFLAG) |
| 2135 | disp = get32 (); |
| 2136 | else |
| 2137 | { |
| 2138 | disp = get16 (); |
| 2139 | if ((disp & 0x8000) != 0) |
| 2140 | disp -= 0x10000; |
| 2141 | /* for some reason, a data16 prefix on a jump instruction |
| 2142 | means that the pc is masked to 16 bits after the |
| 2143 | displacement is added! */ |
| 2144 | mask = 0xffff; |
| 2145 | } |
| 2146 | break; |
| 2147 | default: |
| 2148 | oappend (INTERNAL_DISASSEMBLER_ERROR); |
| 2149 | return; |
| 2150 | } |
| 2151 | disp = (start_pc + codep - start_codep + disp) & mask; |
| 2152 | set_op (disp); |
| 2153 | sprintf (scratchbuf, "0x%x", disp); |
| 2154 | oappend (scratchbuf); |
| 2155 | } |
| 2156 | |
| 2157 | /* ARGSUSED */ |
| 2158 | static void |
| 2159 | OP_SEG (dummy, sizeflag) |
| 2160 | int dummy; |
| 2161 | int sizeflag; |
| 2162 | { |
| 2163 | static char *sreg[] = { |
| 2164 | "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", |
| 2165 | }; |
| 2166 | |
| 2167 | oappend (sreg[reg]); |
| 2168 | } |
| 2169 | |
| 2170 | static void |
| 2171 | OP_DIR (size, sizeflag) |
| 2172 | int size; |
| 2173 | int sizeflag; |
| 2174 | { |
| 2175 | int seg, offset; |
| 2176 | |
| 2177 | switch (size) |
| 2178 | { |
| 2179 | case lptr: |
| 2180 | if (sizeflag & DFLAG) |
| 2181 | { |
| 2182 | offset = get32 (); |
| 2183 | seg = get16 (); |
| 2184 | } |
| 2185 | else |
| 2186 | { |
| 2187 | offset = get16 (); |
| 2188 | seg = get16 (); |
| 2189 | } |
| 2190 | sprintf (scratchbuf, "$0x%x,$0x%x", seg, offset); |
| 2191 | oappend (scratchbuf); |
| 2192 | break; |
| 2193 | case v_mode: |
| 2194 | if (sizeflag & DFLAG) |
| 2195 | offset = get32 (); |
| 2196 | else |
| 2197 | { |
| 2198 | offset = get16 (); |
| 2199 | if ((offset & 0x8000) != 0) |
| 2200 | offset -= 0x10000; |
| 2201 | } |
| 2202 | |
| 2203 | offset = start_pc + codep - start_codep + offset; |
| 2204 | set_op (offset); |
| 2205 | sprintf (scratchbuf, "0x%x", offset); |
| 2206 | oappend (scratchbuf); |
| 2207 | break; |
| 2208 | default: |
| 2209 | oappend (INTERNAL_DISASSEMBLER_ERROR); |
| 2210 | break; |
| 2211 | } |
| 2212 | } |
| 2213 | |
| 2214 | /* ARGSUSED */ |
| 2215 | static void |
| 2216 | OP_OFF (ignore, sizeflag) |
| 2217 | int ignore; |
| 2218 | int sizeflag; |
| 2219 | { |
| 2220 | int off; |
| 2221 | |
| 2222 | append_seg (); |
| 2223 | |
| 2224 | if (sizeflag & AFLAG) |
| 2225 | off = get32 (); |
| 2226 | else |
| 2227 | off = get16 (); |
| 2228 | |
| 2229 | sprintf (scratchbuf, "0x%x", off); |
| 2230 | oappend (scratchbuf); |
| 2231 | } |
| 2232 | |
| 2233 | static void |
| 2234 | ptr_reg (code, sizeflag) |
| 2235 | int code; |
| 2236 | int sizeflag; |
| 2237 | { |
| 2238 | char *s; |
| 2239 | oappend ("("); |
| 2240 | if (sizeflag & AFLAG) |
| 2241 | s = names32[code - eAX_reg]; |
| 2242 | else |
| 2243 | s = names16[code - eAX_reg]; |
| 2244 | oappend (s); |
| 2245 | oappend (")"); |
| 2246 | } |
| 2247 | |
| 2248 | static void |
| 2249 | OP_ESreg (code, sizeflag) |
| 2250 | int code; |
| 2251 | int sizeflag; |
| 2252 | { |
| 2253 | oappend ("%es:"); |
| 2254 | ptr_reg (code, sizeflag); |
| 2255 | } |
| 2256 | |
| 2257 | static void |
| 2258 | OP_DSreg (code, sizeflag) |
| 2259 | int code; |
| 2260 | int sizeflag; |
| 2261 | { |
| 2262 | if ((prefixes |
| 2263 | & (PREFIX_CS |
| 2264 | | PREFIX_DS |
| 2265 | | PREFIX_SS |
| 2266 | | PREFIX_ES |
| 2267 | | PREFIX_FS |
| 2268 | | PREFIX_GS)) == 0) |
| 2269 | prefixes |= PREFIX_DS; |
| 2270 | append_seg(); |
| 2271 | ptr_reg (code, sizeflag); |
| 2272 | } |
| 2273 | |
| 2274 | #if 0 |
| 2275 | /* Not used. */ |
| 2276 | |
| 2277 | /* ARGSUSED */ |
| 2278 | static void |
| 2279 | OP_ONE (dummy, sizeflag) |
| 2280 | int dummy; |
| 2281 | int sizeflag; |
| 2282 | { |
| 2283 | oappend ("1"); |
| 2284 | } |
| 2285 | |
| 2286 | #endif |
| 2287 | |
| 2288 | /* ARGSUSED */ |
| 2289 | static void |
| 2290 | OP_C (dummy, sizeflag) |
| 2291 | int dummy; |
| 2292 | int sizeflag; |
| 2293 | { |
| 2294 | codep++; /* skip mod/rm */ |
| 2295 | sprintf (scratchbuf, "%%cr%d", reg); |
| 2296 | oappend (scratchbuf); |
| 2297 | } |
| 2298 | |
| 2299 | /* ARGSUSED */ |
| 2300 | static void |
| 2301 | OP_D (dummy, sizeflag) |
| 2302 | int dummy; |
| 2303 | int sizeflag; |
| 2304 | { |
| 2305 | codep++; /* skip mod/rm */ |
| 2306 | sprintf (scratchbuf, "%%db%d", reg); |
| 2307 | oappend (scratchbuf); |
| 2308 | } |
| 2309 | |
| 2310 | /* ARGSUSED */ |
| 2311 | static void |
| 2312 | OP_T (dummy, sizeflag) |
| 2313 | int dummy; |
| 2314 | int sizeflag; |
| 2315 | { |
| 2316 | codep++; /* skip mod/rm */ |
| 2317 | sprintf (scratchbuf, "%%tr%d", reg); |
| 2318 | oappend (scratchbuf); |
| 2319 | } |
| 2320 | |
| 2321 | static void |
| 2322 | OP_rm (bytemode, sizeflag) |
| 2323 | int bytemode; |
| 2324 | int sizeflag; |
| 2325 | { |
| 2326 | switch (bytemode) |
| 2327 | { |
| 2328 | case d_mode: |
| 2329 | oappend (names32[rm]); |
| 2330 | break; |
| 2331 | case w_mode: |
| 2332 | oappend (names16[rm]); |
| 2333 | break; |
| 2334 | } |
| 2335 | } |
| 2336 | |
| 2337 | static void |
| 2338 | OP_MMX (ignore, sizeflag) |
| 2339 | int ignore; |
| 2340 | int sizeflag; |
| 2341 | { |
| 2342 | sprintf (scratchbuf, "%%mm%d", reg); |
| 2343 | oappend (scratchbuf); |
| 2344 | } |
| 2345 | |
| 2346 | static void |
| 2347 | OP_EM (bytemode, sizeflag) |
| 2348 | int bytemode; |
| 2349 | int sizeflag; |
| 2350 | { |
| 2351 | if (mod != 3) |
| 2352 | { |
| 2353 | OP_E (bytemode, sizeflag); |
| 2354 | return; |
| 2355 | } |
| 2356 | |
| 2357 | codep++; |
| 2358 | sprintf (scratchbuf, "%%mm%d", rm); |
| 2359 | oappend (scratchbuf); |
| 2360 | } |
| 2361 | |
| 2362 | static void |
| 2363 | OP_MS (ignore, sizeflag) |
| 2364 | int ignore; |
| 2365 | int sizeflag; |
| 2366 | { |
| 2367 | ++codep; |
| 2368 | sprintf (scratchbuf, "%%mm%d", rm); |
| 2369 | oappend (scratchbuf); |
| 2370 | } |