two_byte_opcodes.isa revision 8738:66bf413b0d5b
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33// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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38//
39// Authors: Gabe Black
40
41////////////////////////////////////////////////////////////////////
42//
43// Decode the two byte opcodes
44//
450x2: decode OPCODE_PREFIXA {
46    0x0F: decode OPCODE_OP_TOP5 {
47        format WarnUnimpl {
48            0x00: decode OPCODE_OP_BOTTOM3 {
49                //0x00: group6();
50                0x00: decode MODRM_REG {
51                    0x0: sldt_Mw_or_Rv();
52                    0x1: str_Mw_or_Rv();
53                    0x2: Inst::LLDT(Ew);
54                    0x3: Inst::LTR(Ew);
55                    0x4: verr_Mw_or_Rv();
56                    0x5: verw_Mw_or_Rv();
57                    //0x6: jmpe_Ev(); // IA-64
58                    default: Inst::UD2();
59                }
60                //0x01: group7(); // Ugly, ugly, ugly...
61                0x01: decode MODRM_REG {
62                    0x0: decode MODRM_MOD {
63                        0x3: decode MODRM_RM {
64                            0x1: vmcall();
65                            0x2: vmlaunch();
66                            0x3: vmresume();
67                            0x4: vmxoff();
68                            default: Inst::UD2();
69                        }
70                        default: sgdt_Ms();
71                    }
72                    0x1: decode MODRM_MOD {
73                        0x3: decode MODRM_RM {
74                            0x0: monitor();
75                            0x1: mwait();
76                            default: Inst::UD2();
77                        }
78                        default: sidt_Ms();
79                    }
80                    0x2: decode MODRM_MOD {
81                        0x3: decode MODRM_RM {
82                            0x0: xgetbv();
83                            0x1: xsetbv();
84                        }
85                        default: decode MODE_SUBMODE {
86                            0x0: Inst::LGDT(M);
87                            default: decode OPSIZE {
88                                // 16 bit operand sizes are special, but only
89                                // in legacy and compatability modes.
90                                0x2: Inst::LGDT_16(M);
91                                default: Inst::LGDT(M);
92                            }
93                        }
94                    }
95                    0x3: decode MODRM_MOD {
96                        0x3: decode MODRM_RM {
97                            0x0: vmrun();
98                            0x1: vmmcall();
99                            0x2: vmload();
100                            0x3: vmsave();
101                            0x4: stgi();
102                            0x5: clgi();
103                            0x6: skinit();
104                            0x7: invlpga();
105                        }
106                        default: decode MODE_SUBMODE {
107                            0x0: Inst::LIDT(M);
108                            default: decode OPSIZE {
109                                // 16 bit operand sizes are special, but only
110                                // in legacy and compatability modes.
111                                0x2: Inst::LIDT_16(M);
112                                default: Inst::LIDT(M);
113                            }
114                        }
115                    }
116                    0x4: decode MODRM_MOD {
117                        0x3: Inst::SMSW(Rv);
118                        default: Inst::SMSW(Mw);
119                    }
120                    0x6: Inst::LMSW(Ew);
121                    0x7: decode MODRM_MOD {
122                        0x3: decode MODRM_RM {
123                            0x0: Inst::SWAPGS();
124                            0x1: rdtscp();
125                            default: Inst::UD2();
126                        }
127                        default: Inst::INVLPG(M);
128                    }
129                }
130                0x02: lar_Gv_Ew();
131                0x03: lsl_Gv_Ew();
132                // sandpile.org doesn't seem to know what this is...? We'll
133                // use it for pseudo instructions. We've got 16 bits of space
134                // to play with so there can be quite a few pseudo
135                // instructions.
136                //0x04: loadall_or_reset_or_hang();
137                0x4: decode IMMEDIATE {
138                    format BasicOperate {
139                        0x00: m5arm({{
140                            PseudoInst::arm(xc->tcBase());
141                        }}, IsNonSpeculative);
142                        0x01: m5quiesce({{
143                            PseudoInst::quiesce(xc->tcBase());
144                        }}, IsNonSpeculative);
145                        0x02: m5quiesceNs({{
146                            PseudoInst::quiesceNs(xc->tcBase(), Rdi);
147                        }}, IsNonSpeculative);
148                        0x03: m5quiesceCycle({{
149                            PseudoInst::quiesceCycles(xc->tcBase(), Rdi);
150                        }}, IsNonSpeculative);
151                        0x04: m5quiesceTime({{
152                            Rax = PseudoInst::quiesceTime(xc->tcBase());
153                        }}, IsNonSpeculative);
154                        0x07: m5rpns({{
155                            Rax = PseudoInst::rpns(xc->tcBase());
156                        }}, IsNonSpeculative);
157                        0x21: m5exit({{
158                            PseudoInst::m5exit(xc->tcBase(), Rdi);
159                        }}, IsNonSpeculative);
160                        0x30: m5initparam({{
161                            Rax = PseudoInst::initParam(xc->tcBase());
162                        }}, IsNonSpeculative);
163                        0x31: m5loadsymbol({{
164                            PseudoInst::loadsymbol(xc->tcBase());
165                        }}, IsNonSpeculative);
166                        0x40: m5resetstats({{
167                            PseudoInst::resetstats(xc->tcBase(), Rdi, Rsi);
168                        }}, IsNonSpeculative);
169                        0x41: m5dumpstats({{
170                            PseudoInst::dumpstats(xc->tcBase(), Rdi, Rsi);
171                        }}, IsNonSpeculative);
172                        0x42: m5dumpresetstats({{
173                            PseudoInst::dumpresetstats(xc->tcBase(), Rdi, Rsi);
174                        }}, IsNonSpeculative);
175                        0x43: m5checkpoint({{
176                            PseudoInst::m5checkpoint(xc->tcBase(), Rdi, Rsi);
177                        }}, IsNonSpeculative);
178                        0x50: m5readfile({{
179                            Rax = PseudoInst::readfile(
180                                xc->tcBase(), Rdi, Rsi, Rdx);
181                        }}, IsNonSpeculative);
182                        0x51: m5debugbreak({{
183                            PseudoInst::debugbreak(xc->tcBase());
184                        }}, IsNonSpeculative);
185                        0x52: m5switchcpu({{
186                            PseudoInst::switchcpu(xc->tcBase());
187                        }}, IsNonSpeculative);
188                        0x53: m5addsymbol({{
189                            PseudoInst::addsymbol(xc->tcBase(), Rdi, Rsi);
190                        }}, IsNonSpeculative);
191                        0x54: m5panic({{
192                            panic("M5 panic instruction called at pc = %#x.\n",
193                                  RIP);
194                        }}, IsNonSpeculative);
195                        0x55: m5reserved1({{
196                            warn("M5 reserved opcode 1 ignored.\n");
197                        }}, IsNonSpeculative);
198                        0x56: m5reserved2({{
199                            warn("M5 reserved opcode 2 ignored.\n");
200                        }}, IsNonSpeculative);
201                        0x57: m5reserved3({{
202                            warn("M5 reserved opcode 3 ignored.\n");
203                        }}, IsNonSpeculative);
204                        0x58: m5reserved4({{
205                            warn("M5 reserved opcode 4 ignored.\n");
206                        }}, IsNonSpeculative);
207                        0x59: m5reserved5({{
208                            warn("M5 reserved opcode 5 ignored.\n");
209                        }}, IsNonSpeculative);
210                        0x5a: m5_work_begin({{
211                            PseudoInst::workbegin(xc->tcBase(), Rdi, Rsi);
212                        }}, IsNonSpeculative);
213                        0x5b: m5_work_end({{
214                            PseudoInst::workend(xc->tcBase(), Rdi, Rsi);
215                        }}, IsNonSpeculative);
216                        default: Inst::UD2();
217                    }
218                }
219                0x05: decode FullSystem {
220                    0: SyscallInst::syscall('xc->syscall(Rax)',
221                            IsSyscall, IsNonSpeculative, IsSerializeAfter);
222                    default: decode MODE_MODE {
223                        0x0: decode MODE_SUBMODE {
224                            0x0: Inst::SYSCALL_64();
225                            0x1: Inst::SYSCALL_COMPAT();
226                        }
227                        0x1: Inst::SYSCALL_LEGACY();
228                    }
229                }
230                0x06: Inst::CLTS();
231                0x07: decode MODE_SUBMODE {
232                    0x0: decode OPSIZE {
233                        // Return to 64 bit mode.
234                        0x8: Inst::SYSRET_TO_64();
235                        // Return to compatibility mode.
236                        default: Inst::SYSRET_TO_COMPAT();
237                    }
238                    default: Inst::SYSRET_NON_64();
239                }
240            }
241            0x01: decode OPCODE_OP_BOTTOM3 {
242                0x0: invd();
243                0x1: wbinvd();
244                0x2: Inst::UD2();
245                0x3: Inst::UD2();
246                0x4: Inst::UD2();
247                0x5: Inst::PREFETCH(Mb);
248                0x6: FailUnimpl::femms();
249                0x7: decode IMMEDIATE {
250                    0x0C: pi2fw_Pq_Qq();
251                    0x0D: pi2fd_Pq_Qq();
252                    0x1C: pf2iw_Pq_Qq();
253                    0x1D: pf2id_Pq_Qq();
254                    0x8A: pfnacc_Pq_Qq();
255                    0x8E: pfpnacc_Pq_Qq();
256                    0x90: pfcmpge_Pq_Qq();
257                    0x94: pfmin_Pq_Qq();
258                    0x96: pfrcp_Pq_Qq();
259                    0x97: pfrsqrt_Pq_Qq();
260                    0x9A: Inst::PFSUB(Pq,Qq);
261                    0x9E: pfadd_Pq_Qq();
262                    0xA0: pfcmpgt_Pq_Qq();
263                    0xA4: pfmax_Pq_Qq();
264                    0xA6: pfrcpit1_Pq_Qq();
265                    0xA7: pfrsqit1_Pq_Qq();
266                    0xAA: Inst::PFSUBR(Pq,Qq);
267                    0xAE: pfacc_Pq_Qq();
268                    0xB0: pfcmpeq_Pq_Qq();
269                    0xB4: Inst::PFMUL(Pq,Qq);
270                    0xB6: pfrcpit2_Pq_Qq();
271                    0xB7: Inst::PMULHRW(Pq,Qq);
272                    0xBB: pswapd_Pq_Qq();
273                    0xBF: pavgusb_Pq_Qq();
274                    default: Inst::UD2();
275                }
276            }
277            format Inst{
278                0x02: decode LEGACY_DECODEVAL {
279                    // no prefix
280                    0x0: decode OPCODE_OP_BOTTOM3 {
281                        0x0: MOVUPS(Vo,Wo);
282                        0x1: MOVUPS(Wo,Vo);
283                        0x2: decode MODRM_MOD {
284                            0x3: MOVHLPS(Vps,VRq);
285                            default: MOVLPS(Vps,Mq);
286                        }
287                        0x3: MOVLPS(Mq,Vps);
288                        0x4: UNPCKLPS(Vps,Wq);
289                        0x5: UNPCKHPS(Vps,Wq);
290                        0x6: decode MODRM_MOD {
291                            0x3: MOVLHPS(Vps,VRq);
292                            default: MOVHPS(Vps,Mq);
293                        }
294                        0x7: MOVHPS(Mq,Vq);
295                    }
296                    // repe (0xF3)
297                    0x4: decode OPCODE_OP_BOTTOM3 {
298                        0x0: MOVSS(Vd,Wd);
299                        0x1: MOVSS(Wd,Vd);
300                        0x2: WarnUnimpl::movsldup_Vo_Wo();
301                        0x6: WarnUnimpl::movshdup_Vo_Wo();
302                        default: UD2();
303                    }
304                    // operand size (0x66)
305                    0x1: decode OPCODE_OP_BOTTOM3 {
306                        0x0: MOVUPD(Vo,Wo);
307                        0x1: MOVUPD(Wo,Vo);
308                        0x2: MOVLPD(Vq,Mq);
309                        0x3: MOVLPD(Mq,Vq);
310                        0x4: UNPCKLPD(Vo,Wq);
311                        0x5: UNPCKHPD(Vo,Wo);
312                        0x6: MOVHPD(Vq,Mq);
313                        0x7: MOVHPD(Mq,Vq);
314                    }
315                    // repne (0xF2)
316                    0x8: decode OPCODE_OP_BOTTOM3 {
317                        0x0: MOVSD(Vq,Wq);
318                        0x1: MOVSD(Wq,Vq);
319                        0x2: MOVDDUP(Vo,Wq);
320                        default: UD2();
321                    }
322                    default: UD2();
323                }
324                0x03: decode OPCODE_OP_BOTTOM3 {
325                    //group16();
326                    0x0: decode MODRM_REG {
327                        0x0: WarnUnimpl::prefetch_nta();
328                        0x1: PREFETCH_T0(Mb);
329                        0x2: WarnUnimpl::prefetch_t1();
330                        0x3: WarnUnimpl::prefetch_t2();
331                        default: HINT_NOP();
332                    }
333                    0x1: HINT_NOP();
334                    0x2: HINT_NOP();
335                    0x3: HINT_NOP();
336                    0x4: HINT_NOP();
337                    0x5: HINT_NOP();
338                    0x6: HINT_NOP();
339                    0x7: HINT_NOP();
340                }
341                0x04: decode LEGACY_DECODEVAL {
342                    // no prefix
343                    0x0: decode OPCODE_OP_BOTTOM3 {
344                        0x0: MOV(Rd,Cd);
345                        0x1: MOV(Rd,Dd);
346                        0x2: MOV(Cd,Rd);
347                        0x3: MOV(Dd,Rd);
348                        default: UD2();
349                    }
350                    default: UD2();
351                }
352                0x05: decode LEGACY_DECODEVAL {
353                    // no prefix
354                    0x0: decode OPCODE_OP_BOTTOM3 {
355                        //These moves should really use size o (octword), but
356                        //because they are split in two, they use q (quadword).
357                        0x0: MOVAPS(Vq,Wq);
358                        0x1: MOVAPS(Wq,Vq);
359                        0x2: CVTPI2PS(Vq,Qq);
360                        0x3: WarnUnimpl::movntps_Mo_Vo();
361                        0x4: CVTTPS2PI(Pq,Wq);
362                        0x5: CVTPS2PI(Pq,Wq);
363                        0x6: UCOMISS(Vd,Wd);
364                        0x7: COMISS(Vd,Wd);
365                    }
366                    // repe (0xF3)
367                    0x4: decode OPCODE_OP_BOTTOM3 {
368                        0x2: CVTSI2SS(Vd,Ed);
369                        0x4: CVTTSS2SI(Gd,Wd);
370                        0x5: CVTSS2SI(Gd,Wd);
371                        default: UD2();
372                    }
373                    // operand size (0x66)
374                    0x1: decode OPCODE_OP_BOTTOM3 {
375                        0x0: MOVAPD(Vo,Wo);
376                        0x1: MOVAPD(Wo,Vo);
377                        0x2: CVTPI2PD(Vo,Qq);
378                        0x3: WarnUnimpl::movntpd_Mo_Vo();
379                        0x4: CVTTPD2PI(Pq,Wo);
380                        0x5: CVTPD2PI(Pq,Wo);
381                        0x6: UCOMISD(Vq,Wq);
382                        0x7: COMISD(Vq,Wq);
383                    }
384                    // repne (0xF2)
385                    0x8: decode OPCODE_OP_BOTTOM3 {
386                        // The size of the V operand should be q, not dp
387                        0x2: CVTSI2SD(Vdp,Edp);
388                        // The size of the W operand should be q, not dp
389                        0x4: CVTTSD2SI(Gdp,Wdp);
390                        0x5: CVTSD2SI(Gd,Wq);
391                        default: UD2();
392                    }
393                    default: UD2();
394                }
395            }
396            0x06: decode OPCODE_OP_BOTTOM3 {
397                0x0: Inst::WRMSR();
398                0x1: Inst::RDTSC();
399                0x2: Inst::RDMSR();
400                0x3: rdpmc();
401                0x4: decode FullSystem {
402                    0: SyscallInst::sysenter('xc->syscall(Rax)',
403                            IsSyscall, IsNonSpeculative, IsSerializeAfter);
404                    default: sysenter();
405                }
406                0x5: sysexit();
407                0x6: Inst::UD2();
408                0x7: getsec();
409            }
410            0x07: decode OPCODE_OP_BOTTOM3 {
411                0x0: M5InternalError::error(
412                    {{"Three byte opcode shouldn't be handled by "
413                      "two_byte_opcodes.isa!"}});
414                0x2: M5InternalError::error(
415                    {{"Three byte opcode shouldn't be handled by "
416                      "two_byte_opcodes.isa!"}});
417                default: UD2();
418            }
419            format Inst {
420                0x08: decode OPCODE_OP_BOTTOM3 {
421                    0x0: CMOVO(Gv,Ev);
422                    0x1: CMOVNO(Gv,Ev);
423                    0x2: CMOVB(Gv,Ev);
424                    0x3: CMOVNB(Gv,Ev);
425                    0x4: CMOVZ(Gv,Ev);
426                    0x5: CMOVNZ(Gv,Ev);
427                    0x6: CMOVBE(Gv,Ev);
428                    0x7: CMOVNBE(Gv,Ev);
429                }
430                0x09: decode OPCODE_OP_BOTTOM3 {
431                    0x0: CMOVS(Gv,Ev);
432                    0x1: CMOVNS(Gv,Ev);
433                    0x2: CMOVP(Gv,Ev);
434                    0x3: CMOVNP(Gv,Ev);
435                    0x4: CMOVL(Gv,Ev);
436                    0x5: CMOVNL(Gv,Ev);
437                    0x6: CMOVLE(Gv,Ev);
438                    0x7: CMOVNLE(Gv,Ev);
439                }
440                0x0A: decode LEGACY_DECODEVAL {
441                    // no prefix
442                    0x0: decode OPCODE_OP_BOTTOM3 {
443                        0x0: MOVMSKPS(Gd,VRo);
444                        0x1: SQRTPS(Vo,Wo);
445                        0x2: WarnUnimpl::rqsrtps_Vo_Wo();
446                        0x3: WarnUnimpl::rcpps_Vo_Wo();
447                        0x4: ANDPS(Vo,Wo);
448                        0x5: ANDNPS(Vo,Wo);
449                        0x6: ORPS(Vo,Wo);
450                        0x7: XORPS(Vo,Wo);
451                    }
452                    // repe (0xF3)
453                    0x4: decode OPCODE_OP_BOTTOM3 {
454                        0x1: SQRTSS(Vd,Wd);
455                        0x2: WarnUnimpl::rsqrtss_Vd_Wd();
456                        0x3: WarnUnimpl::rcpss_Vd_Wd();
457                        default: UD2();
458                    }
459                    // operand size (0x66)
460                    0x1: decode OPCODE_OP_BOTTOM3 {
461                        0x0: MOVMSKPD(Gd,VRo);
462                        0x1: SQRTPD(Vo,Wo);
463                        0x4: ANDPD(Vo,Wo);
464                        0x5: ANDNPD(Vo,Wo);
465                        0x6: ORPD(Vo,Wo);
466                        0x7: XORPD(Vo,Wo);
467                        default: UD2();
468                    }
469                    // repne (0xF2)
470                    0x8: decode OPCODE_OP_BOTTOM3 {
471                        0x1: SQRTSD(Vq,Wq);
472                        default: UD2();
473                    }
474                    default: UD2();
475                }
476                0x0B: decode LEGACY_DECODEVAL {
477                    // no prefix
478                    0x0: decode OPCODE_OP_BOTTOM3 {
479                        0x0: ADDPS(Vo,Wo);
480                        0x1: MULPS(Vo,Wo);
481                        0x2: CVTPS2PD(Vo,Wq);
482                        0x3: CVTDQ2PS(Vo,Wo);
483                        0x4: SUBPS(Vo,Wo);
484                        0x5: MINPS(Vo,Wo);
485                        0x6: DIVPS(Vo,Wo);
486                        0x7: MAXPS(Vo,Wo);
487                    }
488                    // repe (0xF3)
489                    0x4: decode OPCODE_OP_BOTTOM3 {
490                        0x0: ADDSS(Vd,Wd);
491                        0x1: MULSS(Vd,Wd);
492                        0x2: CVTSS2SD(Vq,Wd);
493                        0x3: CVTTPS2DQ(Vo,Wo);
494                        0x4: SUBSS(Vd,Wd);
495                        0x5: MINSS(Vd,Wd);
496                        0x6: DIVSS(Vd,Wd);
497                        0x7: MAXSS(Vd,Wd);
498                    }
499                    // operand size (0x66)
500                    0x1: decode OPCODE_OP_BOTTOM3 {
501                        0x0: ADDPD(Vo,Wo);
502                        0x1: MULPD(Vo,Wo);
503                        0x2: CVTPD2PS(Vo,Wo);
504                        0x3: CVTPS2DQ(Vo,Wo);
505                        0x4: SUBPD(Vo,Wo);
506                        0x5: MINPD(Vo,Wo);
507                        0x6: DIVPD(Vo,Wo);
508                        0x7: MAXPD(Vo,Wo);
509                    }
510                    // repne (0xF2)
511                    0x8: decode OPCODE_OP_BOTTOM3 {
512                        0x0: ADDSD(Vq,Wq);
513                        0x1: MULSD(Vq,Wq);
514                        0x2: CVTSD2SS(Vd,Wq);
515                        0x4: SUBSD(Vq,Wq);
516                        0x5: MINSD(Vq,Wq);
517                        0x6: DIVSD(Vq,Wq);
518                        0x7: MAXSD(Vq,Wq);
519                        default: UD2();
520                    }
521                    default: UD2();
522                }
523                0x0C: decode LEGACY_DECODEVAL {
524                    // no prefix
525                    0x0: decode OPCODE_OP_BOTTOM3 {
526                        0x0: PUNPCKLBW(Pq,Qd);
527                        0x1: PUNPCKLWD(Pq,Qd);
528                        0x2: PUNPCKLDQ(Pq,Qd);
529                        0x3: PACKSSWB(Pq,Qq);
530                        0x4: PCMPGTB(Pq,Qq);
531                        0x5: PCMPGTW(Pq,Qq);
532                        0x6: PCMPGTD(Pq,Qq);
533                        0x7: PACKUSWB(Pq,Qq);
534                    }
535                    // operand size (0x66)
536                    0x1: decode OPCODE_OP_BOTTOM3 {
537                        0x0: PUNPCKLBW(Vo,Wq);
538                        0x1: PUNPCKLWD(Vo,Wq);
539                        0x2: PUNPCKLDQ(Vo,Wq);
540                        0x3: PACKSSWB(Vo,Wo);
541                        0x4: PCMPGTB(Vo,Wo);
542                        0x5: PCMPGTW(Vo,Wo);
543                        0x6: PCMPGTD(Vo,Wo);
544                        0x7: PACKUSWB(Vo,Wo);
545                    }
546                    default: UD2();
547                }
548                0x0D: decode LEGACY_DECODEVAL {
549                    // no prefix
550                    0x0: decode OPCODE_OP_BOTTOM3 {
551                        0x0: PUNPCKHBW(Pq,Qq);
552                        0x1: PUNPCKHWD(Pq,Qq);
553                        0x2: PUNPCKHDQ(Pq,Qq);
554                        0x3: PACKSSDW(Pq,Qq);
555                        0x6: MOVD(Pq,Edp);
556                        0x7: MOVQ(Pq,Qq);
557                        default: UD2();
558                    }
559                    // repe (0xF3)
560                    0x4: decode OPCODE_OP_BOTTOM3 {
561                        0x7: MOVDQU(Vo,Wo);
562                        default: UD2();
563                    }
564                    // operand size (0x66)
565                    0x1: decode OPCODE_OP_BOTTOM3 {
566                        0x0: PUNPCKHBW(Vo,Wo);
567                        0x1: PUNPCKHWD(Vo,Wo);
568                        0x2: PUNPCKHDQ(Vo,Wo);
569                        0x3: PACKSSDW(Vo,Wo);
570                        0x4: PUNPCKLQDQ(Vo,Wq);
571                        0x5: PUNPCKHQDQ(Vo,Wq);
572                        0x6: MOVD(Vo,Edp);
573                        0x7: MOVDQA(Vo,Wo);
574                    }
575                    default: UD2();
576                }
577                0x0E: decode LEGACY_DECODEVAL {
578                    // no prefix
579                    0x0: decode OPCODE_OP_BOTTOM3 {
580                        0x0: PSHUFW(Pq,Qq,Ib);
581                        //0x1: group12_pshimw();
582                        0x1: decode MODRM_REG {
583                            0x2: PSRLW(PRq,Ib);
584                            0x4: PSRAW(PRq,Ib);
585                            0x6: PSLLW(PRq,Ib);
586                            default: UD2();
587                        }
588                        //0x2: group13_pshimd();
589                        0x2: decode MODRM_REG {
590                            0x2: PSRLD(PRq,Ib);
591                            0x4: PSRAD(PRq,Ib);
592                            0x6: PSLLD(PRq,Ib);
593                            default: UD2();
594                        }
595                        //0x3: group14_pshimq();
596                        0x3: decode MODRM_REG {
597                            0x2: PSRLQ(PRq,Ib);
598                            0x6: PSLLQ(PRq,Ib);
599                            default: Inst::UD2();
600                        }
601                        0x4: Inst::PCMPEQB(Pq,Qq);
602                        0x5: Inst::PCMPEQW(Pq,Qq);
603                        0x6: Inst::PCMPEQD(Pq,Qq);
604                        0x7: WarnUnimpl::emms();
605                    }
606                    // repe (0xF3)
607                    0x4: decode OPCODE_OP_BOTTOM3 {
608                        0x0: PSHUFHW(Vo,Wo,Ib);
609                        default: UD2();
610                    }
611                    // operand size (0x66)
612                    0x1: decode OPCODE_OP_BOTTOM3 {
613                        0x0: PSHUFD(Vo,Wo,Ib);
614                        //0x1: group12_pshimw();
615                        0x1: decode MODRM_REG {
616                            0x2: PSRLW(VRo,Ib);
617                            0x4: PSRAW(VRo,Ib);
618                            0x6: PSLLW(VRo,Ib);
619                        }
620                        //0x2: group13_pshimd();
621                        0x2: decode MODRM_REG {
622                            0x2: PSRLD(VRo,Ib);
623                            0x4: PSRAD(VRo,Ib);
624                            0x6: PSLLD(VRo,Ib);
625                            default: UD2();
626                        }
627                        //0x3: group14_pshimq();
628                        0x3: decode MODRM_REG {
629                            0x2: PSRLQ(VRo,Ib);
630                            0x3: PSRLDQ(VRo,Ib);
631                            0x6: PSLLQ(VRo,Ib);
632                            0x7: PSLLDQ(VRo,Ib);
633                            default: UD2();
634                        }
635                        0x4: PCMPEQB(Vo,Wo);
636                        0x5: PCMPEQW(Vo,Wo);
637                        0x6: PCMPEQD(Vo,Wo);
638                        default: UD2();
639                    }
640                    // repne (0xF2)
641                    0x8: decode OPCODE_OP_BOTTOM3 {
642                        0x0: PSHUFLW(Vo,Wo,Ib);
643                        default: UD2();
644                    }
645                    default: UD2();
646                }
647                0x0F: decode LEGACY_DECODEVAL {
648                    // no prefix
649                    0x0: decode OPCODE_OP_BOTTOM3 {
650                        0x0: WarnUnimpl::vmread_Edp_Gdp();
651                        0x1: WarnUnimpl::vmwrite_Gdp_Edp();
652                        0x6: MOVD(Edp,Pdp);
653                        0x7: MOVQ(Qq,Pq);
654                        default: UD2();
655                    }
656                    // repe (0xF3)
657                    0x4: decode OPCODE_OP_BOTTOM3 {
658                        0x6: MOVQ(Vq,Wq);
659                        0x7: MOVDQU(Wo,Vo);
660                        default: UD2();
661                    }
662                    // operand size (0x66)
663                    0x1: decode OPCODE_OP_BOTTOM3 {
664                        0x4: HADDPD(Vo,Wo);
665                        0x5: WarnUnimpl::hsubpd_Vo_Wo();
666                        0x6: MOVD(Edp,Vd);
667                        0x7: MOVDQA(Wo,Vo);
668                        default: UD2();
669                    }
670                    // repne (0xF2)
671                    0x8: decode OPCODE_OP_BOTTOM3 {
672                        0x4: WarnUnimpl::haddps_Vo_Wo();
673                        0x5: WarnUnimpl::hsubps_Vo_Wo();
674                        default: UD2();
675                    }
676                    default: UD2();
677                }
678                0x10: decode OPCODE_OP_BOTTOM3 {
679                    0x0: JO(Jz);
680                    0x1: JNO(Jz);
681                    0x2: JB(Jz);
682                    0x3: JNB(Jz);
683                    0x4: JZ(Jz);
684                    0x5: JNZ(Jz);
685                    0x6: JBE(Jz);
686                    0x7: JNBE(Jz);
687                }
688                0x11: decode OPCODE_OP_BOTTOM3 {
689                    0x0: JS(Jz);
690                    0x1: JNS(Jz);
691                    0x2: JP(Jz);
692                    0x3: JNP(Jz);
693                    0x4: JL(Jz);
694                    0x5: JNL(Jz);
695                    0x6: JLE(Jz);
696                    0x7: JNLE(Jz);
697                }
698                0x12: decode OPCODE_OP_BOTTOM3 {
699                    0x0: SETO(Eb);
700                    0x1: SETNO(Eb);
701                    0x2: SETB(Eb);
702                    0x3: SETNB(Eb);
703                    0x4: SETZ(Eb);
704                    0x5: SETNZ(Eb);
705                    0x6: SETBE(Eb);
706                    0x7: SETNBE(Eb);
707                }
708                0x13: decode OPCODE_OP_BOTTOM3 {
709                    0x0: SETS(Eb);
710                    0x1: SETNS(Eb);
711                    0x2: SETP(Eb);
712                    0x3: SETNP(Eb);
713                    0x4: SETL(Eb);
714                    0x5: SETNL(Eb);
715                    0x6: SETLE(Eb);
716                    0x7: SETNLE(Eb);
717                }
718            }
719            0x14: decode OPCODE_OP_BOTTOM3 {
720                0x0: push_fs();
721                0x1: pop_fs();
722                0x2: CPUIDInst::CPUID({{
723                    CpuidResult result;
724                    success = doCpuid(xc->tcBase(), bits(Rax, 31, 0),
725                        bits(Rcx, 31, 0), result);
726                    Rax = result.rax;
727                    Rbx = result.rbx;
728                    Rcx = result.rcx;
729                    Rdx = result.rdx;
730                    }});
731                0x3: Inst::BT(Ev,Gv);
732                0x4: Inst::SHLD(Ev,Gv,Ib);
733                0x5: Inst::SHLD(Ev,Gv);
734                default: Inst::UD2();
735            }
736            0x15: decode OPCODE_OP_BOTTOM3 {
737                0x0: push_gs();
738                0x1: pop_gs();
739                0x2: rsm_smm();
740                0x3: Inst::BTS(Ev,Gv);
741                0x4: Inst::SHRD(Ev,Gv,Ib);
742                0x5: Inst::SHRD(Ev,Gv);
743                //0x6: group15();
744                0x6: decode MODRM_MOD {
745                    0x3: decode MODRM_REG {
746                        0x5: BasicOperate::LFENCE(
747                                     {{/*Nothing*/}}, IsReadBarrier);
748                        0x6: BasicOperate::MFENCE(
749                                     {{/*Nothing*/}}, IsMemBarrier);
750                        0x7: BasicOperate::SFENCE(
751                                     {{/*Nothing*/}}, IsWriteBarrier);
752                        default: Inst::UD2();
753                    }
754                    default: decode MODRM_REG {
755                        0x0: fxsave();
756                        0x1: fxrstor();
757                        0x2: Inst::LDMXCSR(Md);
758                        0x3: Inst::STMXCSR(Md);
759                        0x4: xsave();
760                        0x5: xrstor();
761                        0x6: Inst::UD2();
762                        0x7: clflush();
763                    }
764                }
765                0x7: Inst::IMUL(Gv,Ev);
766            }
767            format Inst {
768                0x16: decode OPCODE_OP_BOTTOM3 {
769                    0x0: CMPXCHG(Eb,Gb);
770                    0x1: CMPXCHG(Ev,Gv);
771                    0x2: WarnUnimpl::lss_Gz_Mp();
772                    0x3: BTR(Ev,Gv);
773                    0x4: WarnUnimpl::lfs_Gz_Mp();
774                    0x5: WarnUnimpl::lgs_Gz_Mp();
775                    //The size of the second operand in these instructions
776                    //should really be "b" or "w", but it's set to v in order
777                    //to have a consistent register size. This shouldn't
778                    //affect behavior.
779                    0x6: MOVZX_B(Gv,Ev);
780                    0x7: MOVZX_W(Gv,Ev);
781                }
782                0x17: decode OPCODE_OP_BOTTOM3 {
783                    0x0: decode LEGACY_REP {
784                        0x0: WarnUnimpl::jmpe_Jz();
785                        0x1: WarnUnimpl::popcnt_Gv_Ev();
786                    }
787                    //0x1: group10_UD2();
788                    0x1: UD2();
789                    //0x2: group8_Ev_Ib();
790                    0x2: decode MODRM_REG {
791                        0x4: BT(Ev,Ib);
792                        0x5: BTS(Ev,Ib);
793                        0x6: BTR(Ev,Ib);
794                        0x7: BTC(Ev,Ib);
795                        default: UD2();
796                    }
797                    0x3: BTC(Ev,Gv);
798                    0x4: BSF(Gv,Ev);
799                    0x5: BSR(Gv,Ev);
800                    //The size of the second operand in these instructions
801                    //should really be "b" or "w", but it's set to v in order
802                    //to have a consistent register size. This shouldn't
803                    //affect behavior.
804                    0x6: MOVSX_B(Gv,Ev);
805                    0x7: MOVSX_W(Gv,Ev);
806                }
807                0x18: decode OPCODE_OP_BOTTOM3 {
808                    0x0: XADD(Eb,Gb);
809                    0x1: XADD(Ev,Gv);
810                    //0x7: group9();
811                    0x7: decode MODRM_REG {
812                        //Also CMPXCHG16B
813                        0x1: CMPXCHG8B(Mdp);
814                        0x6: decode LEGACY_OP {
815                            0x1: WarnUnimpl::vmclear_Mq();
816                            default: decode LEGACY_REP {
817                                0x1: WarnUnimpl::vmxon_Mq();
818                                0x0: WarnUnimpl::vmptrld_Mq();
819                            }
820                        }
821                        0x7: WarnUnimpl::vmptrst_Mq();
822                        default: UD2();
823                    }
824                    default: decode LEGACY_DECODEVAL {
825                        // no prefix
826                        0x0: decode OPCODE_OP_BOTTOM3 {
827                            0x2: CMPPS(Vo,Wo,Ib);
828                            0x3: MOVNTI(Mdp,Gdp);
829                            0x4: PINSRW(Pq,Ew,Ib);
830                            0x5: PEXTRW(Gd,PRq,Ib);
831                            0x6: SHUFPS(Vps,Wps,Ib);
832                        }
833                        // repe (0xF3)
834                        0x4: decode OPCODE_OP_BOTTOM3 {
835                            0x2: CMPSS(Vd,Wd,Ib);
836                            default: UD2();
837                        }
838                        // operand size (0x66)
839                        0x1: decode OPCODE_OP_BOTTOM3 {
840                            0x2: CMPPD(Vo,Wo,Ib);
841                            0x4: PINSRW(Vdw,Ew,Ib);
842                            0x5: PEXTRW(Gd,VRdq,Ib);
843                            0x6: SHUFPD(Vpd,Wpd,Ib);
844                            default: UD2();
845                        }
846                        // repne (0xF2)
847                        0x8: decode OPCODE_OP_BOTTOM3 {
848                            0x2: CMPSD(Vq,Wq,Ib);
849                            default: UD2();
850                        }
851                        default: UD2();
852                    }
853                }
854                0x19: decode OPSIZE {
855                    4: BSWAP_D(Bd);
856                    8: BSWAP_Q(Bq);
857                    default: UD2();
858                }
859                0x1A: decode LEGACY_DECODEVAL {
860                    // no prefix
861                    0x0: decode OPCODE_OP_BOTTOM3 {
862                        0x1: PSRLW(Pq,Qq);
863                        0x2: PSRLD(Pq,Qq);
864                        0x3: PSRLQ(Pq,Qq);
865                        0x4: PADDQ(Pq,Qq);
866                        0x5: PMULLW(Pq,Qq);
867                        0x7: PMOVMSKB(Gd,PRq);
868                        default: UD2();
869                    }
870                    // repe (0xF3)
871                    0x4: decode OPCODE_OP_BOTTOM3 {
872                        0x6: MOVQ2DQ(Vo,PRq);
873                        default: UD2();
874                    }
875                    // operand size (0x66)
876                    0x1: decode OPCODE_OP_BOTTOM3 {
877                        0x0: WarnUnimpl::addsubpd_Vo_Wo();
878                        0x1: PSRLW(Vo,Wo);
879                        0x2: PSRLD(Vo,Wo);
880                        0x3: PSRLQ(Vo,Wo);
881                        0x4: PADDQ(Vo,Wo);
882                        0x5: PMULLW(Vo,Wo);
883                        0x6: MOVQ(Wq,Vq);
884                        0x7: PMOVMSKB(Gd,VRo);
885                    }
886                    // repne (0xF2)
887                    0x8: decode OPCODE_OP_BOTTOM3 {
888                        0x0: WarnUnimpl::addsubps_Vo_Wo();
889                        0x6: MOVDQ2Q(Pq,VRq);
890                        default: UD2();
891                    }
892                    default: UD2();
893                }
894                0x1B: decode LEGACY_DECODEVAL {
895                    // no prefix
896                    0x0: decode OPCODE_OP_BOTTOM3 {
897                        0x0: PSUBUSB(Pq,Qq);
898                        0x1: PSUBUSW(Pq,Qq);
899                        0x2: PMINUB(Pq,Qq);
900                        0x3: PAND(Pq,Qq);
901                        0x4: PADDUSB(Pq,Qq);
902                        0x5: PADDUSW(Pq,Qq);
903                        0x6: PMAXUB(Pq,Qq);
904                        0x7: PANDN(Pq,Qq);
905                    }
906                    // operand size (0x66)
907                    0x1: decode OPCODE_OP_BOTTOM3 {
908                        0x0: PSUBUSB(Vo,Wo);
909                        0x1: PSUBUSW(Vo,Wo);
910                        0x2: PMINUB(Vo,Wo);
911                        0x3: PAND(Vo,Wo);
912                        0x4: PADDUSB(Vo,Wo);
913                        0x5: PADDUSW(Vo,Wo);
914                        0x6: PMAXUB(Vo,Wo);
915                        0x7: PANDN(Vo,Wo);
916                    }
917                    default: UD2();
918                }
919                0x1C: decode LEGACY_DECODEVAL {
920                    // no prefix
921                    0x0: decode OPCODE_OP_BOTTOM3 {
922                        0x0: PAVGB(Pq,Qq);
923                        0x1: PSRAW(Pq,Qq);
924                        0x2: PSRAD(Pq,Qq);
925                        0x3: PAVGW(Pq,Qq);
926                        0x4: PMULHUW(Pq,Qq);
927                        0x5: PMULHW(Pq,Qq);
928                        0x7: WarnUnimpl::movntq_Mq_Pq();
929                        default: UD2();
930                    }
931                    // repe (0xF3)
932                    0x4: decode OPCODE_OP_BOTTOM3 {
933                        0x6: CVTDQ2PD(Vo,Wq);
934                        default: UD2();
935                    }
936                    // operand size (0x66)
937                    0x1: decode OPCODE_OP_BOTTOM3 {
938                        0x0: PAVGB(Vo,Wo);
939                        0x1: PSRAW(Vo,Wo);
940                        0x2: PSRAD(Vo,Wo);
941                        0x3: PAVGW(Vo,Wo);
942                        0x4: PMULHUW(Vo,Wo);
943                        0x5: PMULHW(Vo,Wo);
944                        0x6: CVTTPD2DQ(Vo,Wo);
945                        0x7: WarnUnimpl::movntdq_Mo_Vo();
946                    }
947                    // repne (0xF2)
948                    0x8: decode OPCODE_OP_BOTTOM3 {
949                        0x6: CVTPD2DQ(Vo,Wo);
950                        default: UD2();
951                    }
952                    default: UD2();
953                }
954                0x1D: decode LEGACY_DECODEVAL {
955                    // no prefix
956                    0x0: decode OPCODE_OP_BOTTOM3 {
957                        0x0: PSUBSB(Pq,Qq);
958                        0x1: PSUBSW(Pq,Qq);
959                        0x2: PMINSW(Pq,Qq);
960                        0x3: POR(Pq,Qq);
961                        0x4: PADDSB(Pq,Qq);
962                        0x5: PADDSW(Pq,Qq);
963                        0x6: PMAXSW(Pq,Qq);
964                        0x7: PXOR(Pq,Qq);
965                    }
966                    // operand size (0x66)
967                    0x1: decode OPCODE_OP_BOTTOM3 {
968                        0x0: PSUBSB(Vo,Wo);
969                        0x1: PSUBSW(Vo,Wo);
970                        0x2: PMINSW(Vo,Wo);
971                        0x3: POR(Vo,Wo);
972                        0x4: PADDSB(Vo,Wo);
973                        0x5: PADDSW(Vo,Wo);
974                        0x6: PMAXSW(Vo,Wo);
975                        0x7: PXOR(Vo,Wo);
976                    }
977                    default: UD2();
978                }
979                0x1E: decode LEGACY_DECODEVAL {
980                    // no prefix
981                    0x0: decode OPCODE_OP_BOTTOM3 {
982                        0x1: PSLLW(Pq,Qq);
983                        0x2: PSLLD(Pq,Qq);
984                        0x3: PSLLQ(Pq,Qq);
985                        0x4: PMULUDQ(Pq,Qq);
986                        0x5: PMADDWD(Pq,Qq);
987                        0x6: PSADBW(Pq,Qq);
988                        0x7: MASKMOVQ(Pq,PRq);
989                        default: UD2();
990                    }
991                    // operand size (0x66)
992                    0x1: decode OPCODE_OP_BOTTOM3 {
993                        0x1: PSLLW(Vo,Wo);
994                        0x2: PSLLD(Vo,Wo);
995                        0x3: PSLLQ(Vo,Wo);
996                        0x4: PMULUDQ(Vo,Wo);
997                        0x5: PMADDWD(Vo,Wo);
998                        0x6: PSADBW(Vo,Wo);
999                        0x7: MASKMOVDQU(Vo,VRo);
1000                        default: UD2();
1001                    }
1002                    // repne (0xF2)
1003                    0x8: decode OPCODE_OP_BOTTOM3 {
1004                        0x0: WarnUnimpl::lddqu_Vo_Mo();
1005                        default: UD2();
1006                    }
1007                    default: UD2();
1008                }
1009                0x1F: decode LEGACY_DECODEVAL {
1010                    // no prefix
1011                    0x0: decode OPCODE_OP_BOTTOM3 {
1012                        0x0: PSUBB(Pq,Qq);
1013                        0x1: PSUBW(Pq,Qq);
1014                        0x2: PSUBD(Pq,Qq);
1015                        0x3: PSUBQ(Pq,Qq);
1016                        0x4: PADDB(Pq,Qq);
1017                        0x5: PADDW(Pq,Qq);
1018                        0x6: PADDD(Pq,Qq);
1019                        0x7: UD2();
1020                    }
1021                    // operand size (0x66)
1022                    0x1: decode OPCODE_OP_BOTTOM3 {
1023                        0x0: PSUBB(Vo,Wo);
1024                        0x1: PSUBW(Vo,Wo);
1025                        0x2: PSUBD(Vo,Wo);
1026                        0x3: PSUBQ(Vo,Wo);
1027                        0x4: PADDB(Vo,Wo);
1028                        0x5: PADDW(Vo,Wo);
1029                        0x6: PADDD(Vo,Wo);
1030                        0x7: UD2();
1031                    }
1032                    default: UD2();
1033                }
1034            }
1035            default: FailUnimpl::twoByteOps();
1036        }
1037    }
1038    default: M5InternalError::error(
1039        {{"Unexpected first opcode byte in two byte opcode!"}});
1040}
1041