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

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