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26 
27 #ifndef VIXL_AARCH64_CONSTANTS_AARCH64_H_
28 #define VIXL_AARCH64_CONSTANTS_AARCH64_H_
29 
30 #include "../globals-vixl.h"
31 
32 namespace vixl {
33 namespace aarch64 {
34 
35 const unsigned kNumberOfRegisters = 32;
36 const unsigned kNumberOfVRegisters = 32;
37 const unsigned kNumberOfFPRegisters = kNumberOfVRegisters;
38 // Callee saved registers are x21-x30(lr).
39 const int kNumberOfCalleeSavedRegisters = 10;
40 const int kFirstCalleeSavedRegisterIndex = 21;
41 // Callee saved FP registers are d8-d15.
42 const int kNumberOfCalleeSavedFPRegisters = 8;
43 const int kFirstCalleeSavedFPRegisterIndex = 8;
44 
45 // clang-format off
46 #define AARCH64_REGISTER_CODE_LIST(R)                                          \
47   R(0)  R(1)  R(2)  R(3)  R(4)  R(5)  R(6)  R(7)                               \
48   R(8)  R(9)  R(10) R(11) R(12) R(13) R(14) R(15)                              \
49   R(16) R(17) R(18) R(19) R(20) R(21) R(22) R(23)                              \
50   R(24) R(25) R(26) R(27) R(28) R(29) R(30) R(31)
51 
52 #define INSTRUCTION_FIELDS_LIST(V_)                                          \
53 /* Register fields */                                                        \
54 V_(Rd, 4, 0, ExtractBits)                 /* Destination register.        */ \
55 V_(Rn, 9, 5, ExtractBits)                 /* First source register.       */ \
56 V_(Rm, 20, 16, ExtractBits)               /* Second source register.      */ \
57 V_(Ra, 14, 10, ExtractBits)               /* Third source register.       */ \
58 V_(Rt, 4, 0, ExtractBits)                 /* Load/store register.         */ \
59 V_(Rt2, 14, 10, ExtractBits)              /* Load/store second register.  */ \
60 V_(Rs, 20, 16, ExtractBits)               /* Exclusive access status.     */ \
61                                                                              \
62 /* Common bits */                                                            \
63 V_(SixtyFourBits, 31, 31, ExtractBits)                                       \
64 V_(FlagsUpdate, 29, 29, ExtractBits)                                         \
65                                                                              \
66 /* PC relative addressing */                                                 \
67 V_(ImmPCRelHi, 23, 5, ExtractSignedBits)                                     \
68 V_(ImmPCRelLo, 30, 29, ExtractBits)                                          \
69                                                                              \
70 /* Add/subtract/logical shift register */                                    \
71 V_(ShiftDP, 23, 22, ExtractBits)                                             \
72 V_(ImmDPShift, 15, 10, ExtractBits)                                          \
73                                                                              \
74 /* Add/subtract immediate */                                                 \
75 V_(ImmAddSub, 21, 10, ExtractBits)                                           \
76 V_(ShiftAddSub, 23, 22, ExtractBits)                                         \
77                                                                              \
78 /* Add/substract extend */                                                   \
79 V_(ImmExtendShift, 12, 10, ExtractBits)                                      \
80 V_(ExtendMode, 15, 13, ExtractBits)                                          \
81                                                                              \
82 /* Move wide */                                                              \
83 V_(ImmMoveWide, 20, 5, ExtractBits)                                          \
84 V_(ShiftMoveWide, 22, 21, ExtractBits)                                       \
85                                                                              \
86 /* Logical immediate, bitfield and extract */                                \
87 V_(BitN, 22, 22, ExtractBits)                                                \
88 V_(ImmRotate, 21, 16, ExtractBits)                                           \
89 V_(ImmSetBits, 15, 10, ExtractBits)                                          \
90 V_(ImmR, 21, 16, ExtractBits)                                                \
91 V_(ImmS, 15, 10, ExtractBits)                                                \
92                                                                              \
93 /* Test and branch immediate */                                              \
94 V_(ImmTestBranch, 18, 5, ExtractSignedBits)                                  \
95 V_(ImmTestBranchBit40, 23, 19, ExtractBits)                                  \
96 V_(ImmTestBranchBit5, 31, 31, ExtractBits)                                   \
97                                                                              \
98 /* Conditionals */                                                           \
99 V_(Condition, 15, 12, ExtractBits)                                           \
100 V_(ConditionBranch, 3, 0, ExtractBits)                                       \
101 V_(Nzcv, 3, 0, ExtractBits)                                                  \
102 V_(ImmCondCmp, 20, 16, ExtractBits)                                          \
103 V_(ImmCondBranch, 23, 5, ExtractSignedBits)                                  \
104                                                                              \
105 /* Floating point */                                                         \
106 V_(FPType, 23, 22, ExtractBits)                                              \
107 V_(ImmFP, 20, 13, ExtractBits)                                               \
108 V_(FPScale, 15, 10, ExtractBits)                                             \
109                                                                              \
110 /* Load Store */                                                             \
111 V_(ImmLS, 20, 12, ExtractSignedBits)                                         \
112 V_(ImmLSUnsigned, 21, 10, ExtractBits)                                       \
113 V_(ImmLSPair, 21, 15, ExtractSignedBits)                                     \
114 V_(ImmShiftLS, 12, 12, ExtractBits)                                          \
115 V_(LSOpc, 23, 22, ExtractBits)                                               \
116 V_(LSVector, 26, 26, ExtractBits)                                            \
117 V_(LSSize, 31, 30, ExtractBits)                                              \
118 V_(ImmPrefetchOperation, 4, 0, ExtractBits)                                  \
119 V_(PrefetchHint, 4, 3, ExtractBits)                                          \
120 V_(PrefetchTarget, 2, 1, ExtractBits)                                        \
121 V_(PrefetchStream, 0, 0, ExtractBits)                                        \
122                                                                              \
123 /* Other immediates */                                                       \
124 V_(ImmUncondBranch, 25, 0, ExtractSignedBits)                                \
125 V_(ImmCmpBranch, 23, 5, ExtractSignedBits)                                   \
126 V_(ImmLLiteral, 23, 5, ExtractSignedBits)                                    \
127 V_(ImmException, 20, 5, ExtractBits)                                         \
128 V_(ImmHint, 11, 5, ExtractBits)                                              \
129 V_(ImmBarrierDomain, 11, 10, ExtractBits)                                    \
130 V_(ImmBarrierType, 9, 8, ExtractBits)                                        \
131                                                                              \
132 /* System (MRS, MSR, SYS) */                                                 \
133 V_(ImmSystemRegister, 20, 5, ExtractBits)                                    \
134 V_(SysO0, 19, 19, ExtractBits)                                               \
135 V_(SysOp, 18, 5, ExtractBits)                                                \
136 V_(SysOp0, 20, 19, ExtractBits)                                              \
137 V_(SysOp1, 18, 16, ExtractBits)                                              \
138 V_(SysOp2, 7, 5, ExtractBits)                                                \
139 V_(CRn, 15, 12, ExtractBits)                                                 \
140 V_(CRm, 11, 8, ExtractBits)                                                  \
141                                                                              \
142 /* Load-/store-exclusive */                                                  \
143 V_(LdStXLoad, 22, 22, ExtractBits)                                           \
144 V_(LdStXNotExclusive, 23, 23, ExtractBits)                                   \
145 V_(LdStXAcquireRelease, 15, 15, ExtractBits)                                 \
146 V_(LdStXSizeLog2, 31, 30, ExtractBits)                                       \
147 V_(LdStXPair, 21, 21, ExtractBits)                                           \
148                                                                              \
149 /* NEON generic fields */                                                    \
150 V_(NEONQ, 30, 30, ExtractBits)                                               \
151 V_(NEONSize, 23, 22, ExtractBits)                                            \
152 V_(NEONLSSize, 11, 10, ExtractBits)                                          \
153 V_(NEONS, 12, 12, ExtractBits)                                               \
154 V_(NEONL, 21, 21, ExtractBits)                                               \
155 V_(NEONM, 20, 20, ExtractBits)                                               \
156 V_(NEONH, 11, 11, ExtractBits)                                               \
157 V_(ImmNEONExt, 14, 11, ExtractBits)                                          \
158 V_(ImmNEON5, 20, 16, ExtractBits)                                            \
159 V_(ImmNEON4, 14, 11, ExtractBits)                                            \
160                                                                              \
161 /* NEON extra fields */                                                      \
162 V_(ImmRotFcadd, 12, 12, ExtractBits)                                         \
163 V_(ImmRotFcmlaVec, 12, 11, ExtractBits)                                      \
164 V_(ImmRotFcmlaSca, 14, 13, ExtractBits)                                      \
165                                                                              \
166 /* NEON Modified Immediate fields */                                         \
167 V_(ImmNEONabc, 18, 16, ExtractBits)                                          \
168 V_(ImmNEONdefgh, 9, 5, ExtractBits)                                          \
169 V_(NEONModImmOp, 29, 29, ExtractBits)                                        \
170 V_(NEONCmode, 15, 12, ExtractBits)                                           \
171                                                                              \
172 /* NEON Shift Immediate fields */                                            \
173 V_(ImmNEONImmhImmb, 22, 16, ExtractBits)                                     \
174 V_(ImmNEONImmh, 22, 19, ExtractBits)                                         \
175 V_(ImmNEONImmb, 18, 16, ExtractBits)
176 // clang-format on
177 
178 #define SYSTEM_REGISTER_FIELDS_LIST(V_, M_) \
179   /* NZCV */                                \
180   V_(Flags, 31, 28, ExtractBits)            \
181   V_(N, 31, 31, ExtractBits)                \
182   V_(Z, 30, 30, ExtractBits)                \
183   V_(C, 29, 29, ExtractBits)                \
184   V_(V, 28, 28, ExtractBits)                \
185   M_(NZCV, Flags_mask)                      \
186   /* FPCR */                                \
187   V_(AHP, 26, 26, ExtractBits)              \
188   V_(DN, 25, 25, ExtractBits)               \
189   V_(FZ, 24, 24, ExtractBits)               \
190   V_(RMode, 23, 22, ExtractBits)            \
191   M_(FPCR, AHP_mask | DN_mask | FZ_mask | RMode_mask)
192 
193 // Fields offsets.
194 #define DECLARE_FIELDS_OFFSETS(Name, HighBit, LowBit, X) \
195   const int Name##_offset = LowBit;                      \
196   const int Name##_width = HighBit - LowBit + 1;         \
197   const uint32_t Name##_mask = ((1 << Name##_width) - 1) << LowBit;
198 #define NOTHING(A, B)
199 INSTRUCTION_FIELDS_LIST(DECLARE_FIELDS_OFFSETS)
200 SYSTEM_REGISTER_FIELDS_LIST(DECLARE_FIELDS_OFFSETS, NOTHING)
201 #undef NOTHING
202 #undef DECLARE_FIELDS_BITS
203 
204 // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), formed
205 // from ImmPCRelLo and ImmPCRelHi.
206 const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask;
207 
208 // Disable `clang-format` for the `enum`s below. We care about the manual
209 // formatting that `clang-format` would destroy.
210 // clang-format off
211 
212 // Condition codes.
213 enum Condition {
214   eq = 0,   // Z set            Equal.
215   ne = 1,   // Z clear          Not equal.
216   cs = 2,   // C set            Carry set.
217   cc = 3,   // C clear          Carry clear.
218   mi = 4,   // N set            Negative.
219   pl = 5,   // N clear          Positive or zero.
220   vs = 6,   // V set            Overflow.
221   vc = 7,   // V clear          No overflow.
222   hi = 8,   // C set, Z clear   Unsigned higher.
223   ls = 9,   // C clear or Z set Unsigned lower or same.
224   ge = 10,  // N == V           Greater or equal.
225   lt = 11,  // N != V           Less than.
226   gt = 12,  // Z clear, N == V  Greater than.
227   le = 13,  // Z set or N != V  Less then or equal
228   al = 14,  //                  Always.
229   nv = 15,  // Behaves as always/al.
230 
231   // Aliases.
232   hs = cs,  // C set            Unsigned higher or same.
233   lo = cc   // C clear          Unsigned lower.
234 };
235 
InvertCondition(Condition cond)236 inline Condition InvertCondition(Condition cond) {
237   // Conditions al and nv behave identically, as "always true". They can't be
238   // inverted, because there is no "always false" condition.
239   VIXL_ASSERT((cond != al) && (cond != nv));
240   return static_cast<Condition>(cond ^ 1);
241 }
242 
243 enum FPTrapFlags {
244   EnableTrap   = 1,
245   DisableTrap = 0
246 };
247 
248 enum FlagsUpdate {
249   SetFlags   = 1,
250   LeaveFlags = 0
251 };
252 
253 enum StatusFlags {
254   NoFlag    = 0,
255 
256   // Derive the flag combinations from the system register bit descriptions.
257   NFlag     = N_mask,
258   ZFlag     = Z_mask,
259   CFlag     = C_mask,
260   VFlag     = V_mask,
261   NZFlag    = NFlag | ZFlag,
262   NCFlag    = NFlag | CFlag,
263   NVFlag    = NFlag | VFlag,
264   ZCFlag    = ZFlag | CFlag,
265   ZVFlag    = ZFlag | VFlag,
266   CVFlag    = CFlag | VFlag,
267   NZCFlag   = NFlag | ZFlag | CFlag,
268   NZVFlag   = NFlag | ZFlag | VFlag,
269   NCVFlag   = NFlag | CFlag | VFlag,
270   ZCVFlag   = ZFlag | CFlag | VFlag,
271   NZCVFlag  = NFlag | ZFlag | CFlag | VFlag,
272 
273   // Floating-point comparison results.
274   FPEqualFlag       = ZCFlag,
275   FPLessThanFlag    = NFlag,
276   FPGreaterThanFlag = CFlag,
277   FPUnorderedFlag   = CVFlag
278 };
279 
280 enum Shift {
281   NO_SHIFT = -1,
282   LSL = 0x0,
283   LSR = 0x1,
284   ASR = 0x2,
285   ROR = 0x3,
286   MSL = 0x4
287 };
288 
289 enum Extend {
290   NO_EXTEND = -1,
291   UXTB      = 0,
292   UXTH      = 1,
293   UXTW      = 2,
294   UXTX      = 3,
295   SXTB      = 4,
296   SXTH      = 5,
297   SXTW      = 6,
298   SXTX      = 7
299 };
300 
301 enum SystemHint {
302   NOP   = 0,
303   YIELD = 1,
304   WFE   = 2,
305   WFI   = 3,
306   SEV   = 4,
307   SEVL  = 5,
308   ESB   = 16,
309   CSDB  = 20
310 };
311 
312 enum BarrierDomain {
313   OuterShareable = 0,
314   NonShareable   = 1,
315   InnerShareable = 2,
316   FullSystem     = 3
317 };
318 
319 enum BarrierType {
320   BarrierOther  = 0,
321   BarrierReads  = 1,
322   BarrierWrites = 2,
323   BarrierAll    = 3
324 };
325 
326 enum PrefetchOperation {
327   PLDL1KEEP = 0x00,
328   PLDL1STRM = 0x01,
329   PLDL2KEEP = 0x02,
330   PLDL2STRM = 0x03,
331   PLDL3KEEP = 0x04,
332   PLDL3STRM = 0x05,
333 
334   PLIL1KEEP = 0x08,
335   PLIL1STRM = 0x09,
336   PLIL2KEEP = 0x0a,
337   PLIL2STRM = 0x0b,
338   PLIL3KEEP = 0x0c,
339   PLIL3STRM = 0x0d,
340 
341   PSTL1KEEP = 0x10,
342   PSTL1STRM = 0x11,
343   PSTL2KEEP = 0x12,
344   PSTL2STRM = 0x13,
345   PSTL3KEEP = 0x14,
346   PSTL3STRM = 0x15
347 };
348 
349 template<int op0, int op1, int crn, int crm, int op2>
350 class SystemRegisterEncoder {
351  public:
352   static const uint32_t value =
353       ((op0 << SysO0_offset) |
354        (op1 << SysOp1_offset) |
355        (crn << CRn_offset) |
356        (crm << CRm_offset) |
357        (op2 << SysOp2_offset)) >> ImmSystemRegister_offset;
358 };
359 
360 // System/special register names.
361 // This information is not encoded as one field but as the concatenation of
362 // multiple fields (Op0<0>, Op1, Crn, Crm, Op2).
363 enum SystemRegister {
364   NZCV = SystemRegisterEncoder<3, 3, 4, 2, 0>::value,
365   FPCR = SystemRegisterEncoder<3, 3, 4, 4, 0>::value
366 };
367 
368 template<int op1, int crn, int crm, int op2>
369 class CacheOpEncoder {
370  public:
371   static const uint32_t value =
372       ((op1 << SysOp1_offset) |
373        (crn << CRn_offset) |
374        (crm << CRm_offset) |
375        (op2 << SysOp2_offset)) >> SysOp_offset;
376 };
377 
378 enum InstructionCacheOp {
379   IVAU = CacheOpEncoder<3, 7, 5, 1>::value
380 };
381 
382 enum DataCacheOp {
383   CVAC = CacheOpEncoder<3, 7, 10, 1>::value,
384   CVAU = CacheOpEncoder<3, 7, 11, 1>::value,
385   CIVAC = CacheOpEncoder<3, 7, 14, 1>::value,
386   ZVA = CacheOpEncoder<3, 7, 4, 1>::value
387 };
388 
389 // Instruction enumerations.
390 //
391 // These are the masks that define a class of instructions, and the list of
392 // instructions within each class. Each enumeration has a Fixed, FMask and
393 // Mask value.
394 //
395 // Fixed: The fixed bits in this instruction class.
396 // FMask: The mask used to extract the fixed bits in the class.
397 // Mask:  The mask used to identify the instructions within a class.
398 //
399 // The enumerations can be used like this:
400 //
401 // VIXL_ASSERT(instr->Mask(PCRelAddressingFMask) == PCRelAddressingFixed);
402 // switch(instr->Mask(PCRelAddressingMask)) {
403 //   case ADR:  Format("adr 'Xd, 'AddrPCRelByte"); break;
404 //   case ADRP: Format("adrp 'Xd, 'AddrPCRelPage"); break;
405 //   default:   printf("Unknown instruction\n");
406 // }
407 
408 
409 // Generic fields.
410 enum GenericInstrField {
411   SixtyFourBits        = 0x80000000,
412   ThirtyTwoBits        = 0x00000000,
413 
414   FPTypeMask           = 0x00C00000,
415   FP16                 = 0x00C00000,
416   FP32                 = 0x00000000,
417   FP64                 = 0x00400000
418 };
419 
420 enum NEONFormatField {
421   NEONFormatFieldMask   = 0x40C00000,
422   NEON_Q                = 0x40000000,
423   NEON_8B               = 0x00000000,
424   NEON_16B              = NEON_8B | NEON_Q,
425   NEON_4H               = 0x00400000,
426   NEON_8H               = NEON_4H | NEON_Q,
427   NEON_2S               = 0x00800000,
428   NEON_4S               = NEON_2S | NEON_Q,
429   NEON_1D               = 0x00C00000,
430   NEON_2D               = 0x00C00000 | NEON_Q
431 };
432 
433 enum NEONFPFormatField {
434   NEONFPFormatFieldMask = 0x40400000,
435   NEON_FP_4H            = FP16,
436   NEON_FP_2S            = FP32,
437   NEON_FP_8H            = FP16 | NEON_Q,
438   NEON_FP_4S            = FP32 | NEON_Q,
439   NEON_FP_2D            = FP64 | NEON_Q
440 };
441 
442 enum NEONLSFormatField {
443   NEONLSFormatFieldMask = 0x40000C00,
444   LS_NEON_8B            = 0x00000000,
445   LS_NEON_16B           = LS_NEON_8B | NEON_Q,
446   LS_NEON_4H            = 0x00000400,
447   LS_NEON_8H            = LS_NEON_4H | NEON_Q,
448   LS_NEON_2S            = 0x00000800,
449   LS_NEON_4S            = LS_NEON_2S | NEON_Q,
450   LS_NEON_1D            = 0x00000C00,
451   LS_NEON_2D            = LS_NEON_1D | NEON_Q
452 };
453 
454 enum NEONScalarFormatField {
455   NEONScalarFormatFieldMask = 0x00C00000,
456   NEONScalar                = 0x10000000,
457   NEON_B                    = 0x00000000,
458   NEON_H                    = 0x00400000,
459   NEON_S                    = 0x00800000,
460   NEON_D                    = 0x00C00000
461 };
462 
463 // PC relative addressing.
464 enum PCRelAddressingOp {
465   PCRelAddressingFixed = 0x10000000,
466   PCRelAddressingFMask = 0x1F000000,
467   PCRelAddressingMask  = 0x9F000000,
468   ADR                  = PCRelAddressingFixed | 0x00000000,
469   ADRP                 = PCRelAddressingFixed | 0x80000000
470 };
471 
472 // Add/sub (immediate, shifted and extended.)
473 const int kSFOffset = 31;
474 enum AddSubOp {
475   AddSubOpMask      = 0x60000000,
476   AddSubSetFlagsBit = 0x20000000,
477   ADD               = 0x00000000,
478   ADDS              = ADD | AddSubSetFlagsBit,
479   SUB               = 0x40000000,
480   SUBS              = SUB | AddSubSetFlagsBit
481 };
482 
483 #define ADD_SUB_OP_LIST(V)  \
484   V(ADD),                   \
485   V(ADDS),                  \
486   V(SUB),                   \
487   V(SUBS)
488 
489 enum AddSubImmediateOp {
490   AddSubImmediateFixed = 0x11000000,
491   AddSubImmediateFMask = 0x1F000000,
492   AddSubImmediateMask  = 0xFF000000,
493   #define ADD_SUB_IMMEDIATE(A)           \
494   A##_w_imm = AddSubImmediateFixed | A,  \
495   A##_x_imm = AddSubImmediateFixed | A | SixtyFourBits
496   ADD_SUB_OP_LIST(ADD_SUB_IMMEDIATE)
497   #undef ADD_SUB_IMMEDIATE
498 };
499 
500 enum AddSubShiftedOp {
501   AddSubShiftedFixed   = 0x0B000000,
502   AddSubShiftedFMask   = 0x1F200000,
503   AddSubShiftedMask    = 0xFF200000,
504   #define ADD_SUB_SHIFTED(A)             \
505   A##_w_shift = AddSubShiftedFixed | A,  \
506   A##_x_shift = AddSubShiftedFixed | A | SixtyFourBits
507   ADD_SUB_OP_LIST(ADD_SUB_SHIFTED)
508   #undef ADD_SUB_SHIFTED
509 };
510 
511 enum AddSubExtendedOp {
512   AddSubExtendedFixed  = 0x0B200000,
513   AddSubExtendedFMask  = 0x1F200000,
514   AddSubExtendedMask   = 0xFFE00000,
515   #define ADD_SUB_EXTENDED(A)           \
516   A##_w_ext = AddSubExtendedFixed | A,  \
517   A##_x_ext = AddSubExtendedFixed | A | SixtyFourBits
518   ADD_SUB_OP_LIST(ADD_SUB_EXTENDED)
519   #undef ADD_SUB_EXTENDED
520 };
521 
522 // Add/sub with carry.
523 enum AddSubWithCarryOp {
524   AddSubWithCarryFixed = 0x1A000000,
525   AddSubWithCarryFMask = 0x1FE00000,
526   AddSubWithCarryMask  = 0xFFE0FC00,
527   ADC_w                = AddSubWithCarryFixed | ADD,
528   ADC_x                = AddSubWithCarryFixed | ADD | SixtyFourBits,
529   ADC                  = ADC_w,
530   ADCS_w               = AddSubWithCarryFixed | ADDS,
531   ADCS_x               = AddSubWithCarryFixed | ADDS | SixtyFourBits,
532   SBC_w                = AddSubWithCarryFixed | SUB,
533   SBC_x                = AddSubWithCarryFixed | SUB | SixtyFourBits,
534   SBC                  = SBC_w,
535   SBCS_w               = AddSubWithCarryFixed | SUBS,
536   SBCS_x               = AddSubWithCarryFixed | SUBS | SixtyFourBits
537 };
538 
539 
540 // Logical (immediate and shifted register).
541 enum LogicalOp {
542   LogicalOpMask = 0x60200000,
543   NOT   = 0x00200000,
544   AND   = 0x00000000,
545   BIC   = AND | NOT,
546   ORR   = 0x20000000,
547   ORN   = ORR | NOT,
548   EOR   = 0x40000000,
549   EON   = EOR | NOT,
550   ANDS  = 0x60000000,
551   BICS  = ANDS | NOT
552 };
553 
554 // Logical immediate.
555 enum LogicalImmediateOp {
556   LogicalImmediateFixed = 0x12000000,
557   LogicalImmediateFMask = 0x1F800000,
558   LogicalImmediateMask  = 0xFF800000,
559   AND_w_imm   = LogicalImmediateFixed | AND,
560   AND_x_imm   = LogicalImmediateFixed | AND | SixtyFourBits,
561   ORR_w_imm   = LogicalImmediateFixed | ORR,
562   ORR_x_imm   = LogicalImmediateFixed | ORR | SixtyFourBits,
563   EOR_w_imm   = LogicalImmediateFixed | EOR,
564   EOR_x_imm   = LogicalImmediateFixed | EOR | SixtyFourBits,
565   ANDS_w_imm  = LogicalImmediateFixed | ANDS,
566   ANDS_x_imm  = LogicalImmediateFixed | ANDS | SixtyFourBits
567 };
568 
569 // Logical shifted register.
570 enum LogicalShiftedOp {
571   LogicalShiftedFixed = 0x0A000000,
572   LogicalShiftedFMask = 0x1F000000,
573   LogicalShiftedMask  = 0xFF200000,
574   AND_w               = LogicalShiftedFixed | AND,
575   AND_x               = LogicalShiftedFixed | AND | SixtyFourBits,
576   AND_shift           = AND_w,
577   BIC_w               = LogicalShiftedFixed | BIC,
578   BIC_x               = LogicalShiftedFixed | BIC | SixtyFourBits,
579   BIC_shift           = BIC_w,
580   ORR_w               = LogicalShiftedFixed | ORR,
581   ORR_x               = LogicalShiftedFixed | ORR | SixtyFourBits,
582   ORR_shift           = ORR_w,
583   ORN_w               = LogicalShiftedFixed | ORN,
584   ORN_x               = LogicalShiftedFixed | ORN | SixtyFourBits,
585   ORN_shift           = ORN_w,
586   EOR_w               = LogicalShiftedFixed | EOR,
587   EOR_x               = LogicalShiftedFixed | EOR | SixtyFourBits,
588   EOR_shift           = EOR_w,
589   EON_w               = LogicalShiftedFixed | EON,
590   EON_x               = LogicalShiftedFixed | EON | SixtyFourBits,
591   EON_shift           = EON_w,
592   ANDS_w              = LogicalShiftedFixed | ANDS,
593   ANDS_x              = LogicalShiftedFixed | ANDS | SixtyFourBits,
594   ANDS_shift          = ANDS_w,
595   BICS_w              = LogicalShiftedFixed | BICS,
596   BICS_x              = LogicalShiftedFixed | BICS | SixtyFourBits,
597   BICS_shift          = BICS_w
598 };
599 
600 // Move wide immediate.
601 enum MoveWideImmediateOp {
602   MoveWideImmediateFixed = 0x12800000,
603   MoveWideImmediateFMask = 0x1F800000,
604   MoveWideImmediateMask  = 0xFF800000,
605   MOVN                   = 0x00000000,
606   MOVZ                   = 0x40000000,
607   MOVK                   = 0x60000000,
608   MOVN_w                 = MoveWideImmediateFixed | MOVN,
609   MOVN_x                 = MoveWideImmediateFixed | MOVN | SixtyFourBits,
610   MOVZ_w                 = MoveWideImmediateFixed | MOVZ,
611   MOVZ_x                 = MoveWideImmediateFixed | MOVZ | SixtyFourBits,
612   MOVK_w                 = MoveWideImmediateFixed | MOVK,
613   MOVK_x                 = MoveWideImmediateFixed | MOVK | SixtyFourBits
614 };
615 
616 // Bitfield.
617 const int kBitfieldNOffset = 22;
618 enum BitfieldOp {
619   BitfieldFixed = 0x13000000,
620   BitfieldFMask = 0x1F800000,
621   BitfieldMask  = 0xFF800000,
622   SBFM_w        = BitfieldFixed | 0x00000000,
623   SBFM_x        = BitfieldFixed | 0x80000000,
624   SBFM          = SBFM_w,
625   BFM_w         = BitfieldFixed | 0x20000000,
626   BFM_x         = BitfieldFixed | 0xA0000000,
627   BFM           = BFM_w,
628   UBFM_w        = BitfieldFixed | 0x40000000,
629   UBFM_x        = BitfieldFixed | 0xC0000000,
630   UBFM          = UBFM_w
631   // Bitfield N field.
632 };
633 
634 // Extract.
635 enum ExtractOp {
636   ExtractFixed = 0x13800000,
637   ExtractFMask = 0x1F800000,
638   ExtractMask  = 0xFFA00000,
639   EXTR_w       = ExtractFixed | 0x00000000,
640   EXTR_x       = ExtractFixed | 0x80000000,
641   EXTR         = EXTR_w
642 };
643 
644 // Unconditional branch.
645 enum UnconditionalBranchOp {
646   UnconditionalBranchFixed = 0x14000000,
647   UnconditionalBranchFMask = 0x7C000000,
648   UnconditionalBranchMask  = 0xFC000000,
649   B                        = UnconditionalBranchFixed | 0x00000000,
650   BL                       = UnconditionalBranchFixed | 0x80000000
651 };
652 
653 // Unconditional branch to register.
654 enum UnconditionalBranchToRegisterOp {
655   UnconditionalBranchToRegisterFixed = 0xD6000000,
656   UnconditionalBranchToRegisterFMask = 0xFE000000,
657   UnconditionalBranchToRegisterMask  = 0xFFFFFC00,
658   BR      = UnconditionalBranchToRegisterFixed | 0x001F0000,
659   BLR     = UnconditionalBranchToRegisterFixed | 0x003F0000,
660   RET     = UnconditionalBranchToRegisterFixed | 0x005F0000,
661 
662   BRAAZ  = UnconditionalBranchToRegisterFixed | 0x001F0800,
663   BRABZ  = UnconditionalBranchToRegisterFixed | 0x001F0C00,
664   BLRAAZ = UnconditionalBranchToRegisterFixed | 0x003F0800,
665   BLRABZ = UnconditionalBranchToRegisterFixed | 0x003F0C00,
666   RETAA  = UnconditionalBranchToRegisterFixed | 0x005F0800,
667   RETAB  = UnconditionalBranchToRegisterFixed | 0x005F0C00,
668   BRAA   = UnconditionalBranchToRegisterFixed | 0x011F0800,
669   BRAB   = UnconditionalBranchToRegisterFixed | 0x011F0C00,
670   BLRAA  = UnconditionalBranchToRegisterFixed | 0x013F0800,
671   BLRAB  = UnconditionalBranchToRegisterFixed | 0x013F0C00
672 };
673 
674 // Compare and branch.
675 enum CompareBranchOp {
676   CompareBranchFixed = 0x34000000,
677   CompareBranchFMask = 0x7E000000,
678   CompareBranchMask  = 0xFF000000,
679   CBZ_w              = CompareBranchFixed | 0x00000000,
680   CBZ_x              = CompareBranchFixed | 0x80000000,
681   CBZ                = CBZ_w,
682   CBNZ_w             = CompareBranchFixed | 0x01000000,
683   CBNZ_x             = CompareBranchFixed | 0x81000000,
684   CBNZ               = CBNZ_w
685 };
686 
687 // Test and branch.
688 enum TestBranchOp {
689   TestBranchFixed = 0x36000000,
690   TestBranchFMask = 0x7E000000,
691   TestBranchMask  = 0x7F000000,
692   TBZ             = TestBranchFixed | 0x00000000,
693   TBNZ            = TestBranchFixed | 0x01000000
694 };
695 
696 // Conditional branch.
697 enum ConditionalBranchOp {
698   ConditionalBranchFixed = 0x54000000,
699   ConditionalBranchFMask = 0xFE000000,
700   ConditionalBranchMask  = 0xFF000010,
701   B_cond                 = ConditionalBranchFixed | 0x00000000
702 };
703 
704 // System.
705 // System instruction encoding is complicated because some instructions use op
706 // and CR fields to encode parameters. To handle this cleanly, the system
707 // instructions are split into more than one enum.
708 
709 enum SystemOp {
710   SystemFixed = 0xD5000000,
711   SystemFMask = 0xFFC00000
712 };
713 
714 enum SystemSysRegOp {
715   SystemSysRegFixed = 0xD5100000,
716   SystemSysRegFMask = 0xFFD00000,
717   SystemSysRegMask  = 0xFFF00000,
718   MRS               = SystemSysRegFixed | 0x00200000,
719   MSR               = SystemSysRegFixed | 0x00000000
720 };
721 
722 enum SystemHintOp {
723   SystemHintFixed = 0xD503201F,
724   SystemHintFMask = 0xFFFFF01F,
725   SystemHintMask  = 0xFFFFF01F,
726   HINT            = SystemHintFixed | 0x00000000
727 };
728 
729 enum SystemSysOp {
730   SystemSysFixed  = 0xD5080000,
731   SystemSysFMask  = 0xFFF80000,
732   SystemSysMask   = 0xFFF80000,
733   SYS             = SystemSysFixed | 0x00000000
734 };
735 
736 // Exception.
737 enum ExceptionOp {
738   ExceptionFixed = 0xD4000000,
739   ExceptionFMask = 0xFF000000,
740   ExceptionMask  = 0xFFE0001F,
741   HLT            = ExceptionFixed | 0x00400000,
742   BRK            = ExceptionFixed | 0x00200000,
743   SVC            = ExceptionFixed | 0x00000001,
744   HVC            = ExceptionFixed | 0x00000002,
745   SMC            = ExceptionFixed | 0x00000003,
746   DCPS1          = ExceptionFixed | 0x00A00001,
747   DCPS2          = ExceptionFixed | 0x00A00002,
748   DCPS3          = ExceptionFixed | 0x00A00003
749 };
750 
751 enum MemBarrierOp {
752   MemBarrierFixed = 0xD503309F,
753   MemBarrierFMask = 0xFFFFF09F,
754   MemBarrierMask  = 0xFFFFF0FF,
755   DSB             = MemBarrierFixed | 0x00000000,
756   DMB             = MemBarrierFixed | 0x00000020,
757   ISB             = MemBarrierFixed | 0x00000040
758 };
759 
760 enum SystemExclusiveMonitorOp {
761   SystemExclusiveMonitorFixed = 0xD503305F,
762   SystemExclusiveMonitorFMask = 0xFFFFF0FF,
763   SystemExclusiveMonitorMask  = 0xFFFFF0FF,
764   CLREX                       = SystemExclusiveMonitorFixed
765 };
766 
767 enum SystemPAuthOp {
768   SystemPAuthFixed = 0xD503211F,
769   SystemPAuthFMask = 0xFFFFFD1F,
770   SystemPAuthMask  = 0xFFFFFFFF,
771   PACIA1716 = SystemPAuthFixed | 0x00000100,
772   PACIB1716 = SystemPAuthFixed | 0x00000140,
773   AUTIA1716 = SystemPAuthFixed | 0x00000180,
774   AUTIB1716 = SystemPAuthFixed | 0x000001C0,
775   PACIAZ    = SystemPAuthFixed | 0x00000300,
776   PACIASP   = SystemPAuthFixed | 0x00000320,
777   PACIBZ    = SystemPAuthFixed | 0x00000340,
778   PACIBSP   = SystemPAuthFixed | 0x00000360,
779   AUTIAZ    = SystemPAuthFixed | 0x00000380,
780   AUTIASP   = SystemPAuthFixed | 0x000003A0,
781   AUTIBZ    = SystemPAuthFixed | 0x000003C0,
782   AUTIBSP   = SystemPAuthFixed | 0x000003E0,
783 
784   // XPACLRI has the same fixed mask as System Hints and needs to be handled
785   // differently.
786   XPACLRI   = 0xD50320FF
787 };
788 
789 // Any load or store.
790 enum LoadStoreAnyOp {
791   LoadStoreAnyFMask = 0x0a000000,
792   LoadStoreAnyFixed = 0x08000000
793 };
794 
795 // Any load pair or store pair.
796 enum LoadStorePairAnyOp {
797   LoadStorePairAnyFMask = 0x3a000000,
798   LoadStorePairAnyFixed = 0x28000000
799 };
800 
801 #define LOAD_STORE_PAIR_OP_LIST(V)  \
802   V(STP, w,   0x00000000),          \
803   V(LDP, w,   0x00400000),          \
804   V(LDPSW, x, 0x40400000),          \
805   V(STP, x,   0x80000000),          \
806   V(LDP, x,   0x80400000),          \
807   V(STP, s,   0x04000000),          \
808   V(LDP, s,   0x04400000),          \
809   V(STP, d,   0x44000000),          \
810   V(LDP, d,   0x44400000),          \
811   V(STP, q,   0x84000000),          \
812   V(LDP, q,   0x84400000)
813 
814 // Load/store pair (post, pre and offset.)
815 enum LoadStorePairOp {
816   LoadStorePairMask = 0xC4400000,
817   LoadStorePairLBit = 1 << 22,
818   #define LOAD_STORE_PAIR(A, B, C) \
819   A##_##B = C
820   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR)
821   #undef LOAD_STORE_PAIR
822 };
823 
824 enum LoadStorePairPostIndexOp {
825   LoadStorePairPostIndexFixed = 0x28800000,
826   LoadStorePairPostIndexFMask = 0x3B800000,
827   LoadStorePairPostIndexMask  = 0xFFC00000,
828   #define LOAD_STORE_PAIR_POST_INDEX(A, B, C)  \
829   A##_##B##_post = LoadStorePairPostIndexFixed | A##_##B
830   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_POST_INDEX)
831   #undef LOAD_STORE_PAIR_POST_INDEX
832 };
833 
834 enum LoadStorePairPreIndexOp {
835   LoadStorePairPreIndexFixed = 0x29800000,
836   LoadStorePairPreIndexFMask = 0x3B800000,
837   LoadStorePairPreIndexMask  = 0xFFC00000,
838   #define LOAD_STORE_PAIR_PRE_INDEX(A, B, C)  \
839   A##_##B##_pre = LoadStorePairPreIndexFixed | A##_##B
840   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_PRE_INDEX)
841   #undef LOAD_STORE_PAIR_PRE_INDEX
842 };
843 
844 enum LoadStorePairOffsetOp {
845   LoadStorePairOffsetFixed = 0x29000000,
846   LoadStorePairOffsetFMask = 0x3B800000,
847   LoadStorePairOffsetMask  = 0xFFC00000,
848   #define LOAD_STORE_PAIR_OFFSET(A, B, C)  \
849   A##_##B##_off = LoadStorePairOffsetFixed | A##_##B
850   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_OFFSET)
851   #undef LOAD_STORE_PAIR_OFFSET
852 };
853 
854 enum LoadStorePairNonTemporalOp {
855   LoadStorePairNonTemporalFixed = 0x28000000,
856   LoadStorePairNonTemporalFMask = 0x3B800000,
857   LoadStorePairNonTemporalMask  = 0xFFC00000,
858   LoadStorePairNonTemporalLBit = 1 << 22,
859   STNP_w = LoadStorePairNonTemporalFixed | STP_w,
860   LDNP_w = LoadStorePairNonTemporalFixed | LDP_w,
861   STNP_x = LoadStorePairNonTemporalFixed | STP_x,
862   LDNP_x = LoadStorePairNonTemporalFixed | LDP_x,
863   STNP_s = LoadStorePairNonTemporalFixed | STP_s,
864   LDNP_s = LoadStorePairNonTemporalFixed | LDP_s,
865   STNP_d = LoadStorePairNonTemporalFixed | STP_d,
866   LDNP_d = LoadStorePairNonTemporalFixed | LDP_d,
867   STNP_q = LoadStorePairNonTemporalFixed | STP_q,
868   LDNP_q = LoadStorePairNonTemporalFixed | LDP_q
869 };
870 
871 // Load literal.
872 enum LoadLiteralOp {
873   LoadLiteralFixed = 0x18000000,
874   LoadLiteralFMask = 0x3B000000,
875   LoadLiteralMask  = 0xFF000000,
876   LDR_w_lit        = LoadLiteralFixed | 0x00000000,
877   LDR_x_lit        = LoadLiteralFixed | 0x40000000,
878   LDRSW_x_lit      = LoadLiteralFixed | 0x80000000,
879   PRFM_lit         = LoadLiteralFixed | 0xC0000000,
880   LDR_s_lit        = LoadLiteralFixed | 0x04000000,
881   LDR_d_lit        = LoadLiteralFixed | 0x44000000,
882   LDR_q_lit        = LoadLiteralFixed | 0x84000000
883 };
884 
885 #define LOAD_STORE_OP_LIST(V)     \
886   V(ST, RB, w,  0x00000000),  \
887   V(ST, RH, w,  0x40000000),  \
888   V(ST, R, w,   0x80000000),  \
889   V(ST, R, x,   0xC0000000),  \
890   V(LD, RB, w,  0x00400000),  \
891   V(LD, RH, w,  0x40400000),  \
892   V(LD, R, w,   0x80400000),  \
893   V(LD, R, x,   0xC0400000),  \
894   V(LD, RSB, x, 0x00800000),  \
895   V(LD, RSH, x, 0x40800000),  \
896   V(LD, RSW, x, 0x80800000),  \
897   V(LD, RSB, w, 0x00C00000),  \
898   V(LD, RSH, w, 0x40C00000),  \
899   V(ST, R, b,   0x04000000),  \
900   V(ST, R, h,   0x44000000),  \
901   V(ST, R, s,   0x84000000),  \
902   V(ST, R, d,   0xC4000000),  \
903   V(ST, R, q,   0x04800000),  \
904   V(LD, R, b,   0x04400000),  \
905   V(LD, R, h,   0x44400000),  \
906   V(LD, R, s,   0x84400000),  \
907   V(LD, R, d,   0xC4400000),  \
908   V(LD, R, q,   0x04C00000)
909 
910 // Load/store (post, pre, offset and unsigned.)
911 enum LoadStoreOp {
912   LoadStoreMask = 0xC4C00000,
913   LoadStoreVMask = 0x04000000,
914   #define LOAD_STORE(A, B, C, D)  \
915   A##B##_##C = D
916   LOAD_STORE_OP_LIST(LOAD_STORE),
917   #undef LOAD_STORE
918   PRFM = 0xC0800000
919 };
920 
921 // Load/store unscaled offset.
922 enum LoadStoreUnscaledOffsetOp {
923   LoadStoreUnscaledOffsetFixed = 0x38000000,
924   LoadStoreUnscaledOffsetFMask = 0x3B200C00,
925   LoadStoreUnscaledOffsetMask  = 0xFFE00C00,
926   PRFUM                        = LoadStoreUnscaledOffsetFixed | PRFM,
927   #define LOAD_STORE_UNSCALED(A, B, C, D)  \
928   A##U##B##_##C = LoadStoreUnscaledOffsetFixed | D
929   LOAD_STORE_OP_LIST(LOAD_STORE_UNSCALED)
930   #undef LOAD_STORE_UNSCALED
931 };
932 
933 // Load/store post index.
934 enum LoadStorePostIndex {
935   LoadStorePostIndexFixed = 0x38000400,
936   LoadStorePostIndexFMask = 0x3B200C00,
937   LoadStorePostIndexMask  = 0xFFE00C00,
938   #define LOAD_STORE_POST_INDEX(A, B, C, D)  \
939   A##B##_##C##_post = LoadStorePostIndexFixed | D
940   LOAD_STORE_OP_LIST(LOAD_STORE_POST_INDEX)
941   #undef LOAD_STORE_POST_INDEX
942 };
943 
944 // Load/store pre index.
945 enum LoadStorePreIndex {
946   LoadStorePreIndexFixed = 0x38000C00,
947   LoadStorePreIndexFMask = 0x3B200C00,
948   LoadStorePreIndexMask  = 0xFFE00C00,
949   #define LOAD_STORE_PRE_INDEX(A, B, C, D)  \
950   A##B##_##C##_pre = LoadStorePreIndexFixed | D
951   LOAD_STORE_OP_LIST(LOAD_STORE_PRE_INDEX)
952   #undef LOAD_STORE_PRE_INDEX
953 };
954 
955 // Load/store unsigned offset.
956 enum LoadStoreUnsignedOffset {
957   LoadStoreUnsignedOffsetFixed = 0x39000000,
958   LoadStoreUnsignedOffsetFMask = 0x3B000000,
959   LoadStoreUnsignedOffsetMask  = 0xFFC00000,
960   PRFM_unsigned                = LoadStoreUnsignedOffsetFixed | PRFM,
961   #define LOAD_STORE_UNSIGNED_OFFSET(A, B, C, D) \
962   A##B##_##C##_unsigned = LoadStoreUnsignedOffsetFixed | D
963   LOAD_STORE_OP_LIST(LOAD_STORE_UNSIGNED_OFFSET)
964   #undef LOAD_STORE_UNSIGNED_OFFSET
965 };
966 
967 // Load/store register offset.
968 enum LoadStoreRegisterOffset {
969   LoadStoreRegisterOffsetFixed = 0x38200800,
970   LoadStoreRegisterOffsetFMask = 0x3B200C00,
971   LoadStoreRegisterOffsetMask  = 0xFFE00C00,
972   PRFM_reg                     = LoadStoreRegisterOffsetFixed | PRFM,
973   #define LOAD_STORE_REGISTER_OFFSET(A, B, C, D) \
974   A##B##_##C##_reg = LoadStoreRegisterOffsetFixed | D
975   LOAD_STORE_OP_LIST(LOAD_STORE_REGISTER_OFFSET)
976   #undef LOAD_STORE_REGISTER_OFFSET
977 };
978 
979 enum LoadStoreExclusive {
980   LoadStoreExclusiveFixed = 0x08000000,
981   LoadStoreExclusiveFMask = 0x3F000000,
982   LoadStoreExclusiveMask  = 0xFFE08000,
983   STXRB_w  = LoadStoreExclusiveFixed | 0x00000000,
984   STXRH_w  = LoadStoreExclusiveFixed | 0x40000000,
985   STXR_w   = LoadStoreExclusiveFixed | 0x80000000,
986   STXR_x   = LoadStoreExclusiveFixed | 0xC0000000,
987   LDXRB_w  = LoadStoreExclusiveFixed | 0x00400000,
988   LDXRH_w  = LoadStoreExclusiveFixed | 0x40400000,
989   LDXR_w   = LoadStoreExclusiveFixed | 0x80400000,
990   LDXR_x   = LoadStoreExclusiveFixed | 0xC0400000,
991   STXP_w   = LoadStoreExclusiveFixed | 0x80200000,
992   STXP_x   = LoadStoreExclusiveFixed | 0xC0200000,
993   LDXP_w   = LoadStoreExclusiveFixed | 0x80600000,
994   LDXP_x   = LoadStoreExclusiveFixed | 0xC0600000,
995   STLXRB_w = LoadStoreExclusiveFixed | 0x00008000,
996   STLXRH_w = LoadStoreExclusiveFixed | 0x40008000,
997   STLXR_w  = LoadStoreExclusiveFixed | 0x80008000,
998   STLXR_x  = LoadStoreExclusiveFixed | 0xC0008000,
999   LDAXRB_w = LoadStoreExclusiveFixed | 0x00408000,
1000   LDAXRH_w = LoadStoreExclusiveFixed | 0x40408000,
1001   LDAXR_w  = LoadStoreExclusiveFixed | 0x80408000,
1002   LDAXR_x  = LoadStoreExclusiveFixed | 0xC0408000,
1003   STLXP_w  = LoadStoreExclusiveFixed | 0x80208000,
1004   STLXP_x  = LoadStoreExclusiveFixed | 0xC0208000,
1005   LDAXP_w  = LoadStoreExclusiveFixed | 0x80608000,
1006   LDAXP_x  = LoadStoreExclusiveFixed | 0xC0608000,
1007   STLRB_w  = LoadStoreExclusiveFixed | 0x00808000,
1008   STLRH_w  = LoadStoreExclusiveFixed | 0x40808000,
1009   STLR_w   = LoadStoreExclusiveFixed | 0x80808000,
1010   STLR_x   = LoadStoreExclusiveFixed | 0xC0808000,
1011   LDARB_w  = LoadStoreExclusiveFixed | 0x00C08000,
1012   LDARH_w  = LoadStoreExclusiveFixed | 0x40C08000,
1013   LDAR_w   = LoadStoreExclusiveFixed | 0x80C08000,
1014   LDAR_x   = LoadStoreExclusiveFixed | 0xC0C08000,
1015 
1016   // v8.1 Load/store LORegion ops
1017   STLLRB   = LoadStoreExclusiveFixed | 0x00800000,
1018   LDLARB   = LoadStoreExclusiveFixed | 0x00C00000,
1019   STLLRH   = LoadStoreExclusiveFixed | 0x40800000,
1020   LDLARH   = LoadStoreExclusiveFixed | 0x40C00000,
1021   STLLR_w  = LoadStoreExclusiveFixed | 0x80800000,
1022   LDLAR_w  = LoadStoreExclusiveFixed | 0x80C00000,
1023   STLLR_x  = LoadStoreExclusiveFixed | 0xC0800000,
1024   LDLAR_x  = LoadStoreExclusiveFixed | 0xC0C00000,
1025 
1026   // v8.1 Load/store exclusive ops
1027   LSEBit_l  = 0x00400000,
1028   LSEBit_o0 = 0x00008000,
1029   LSEBit_sz = 0x40000000,
1030   CASFixed  = LoadStoreExclusiveFixed | 0x80A00000,
1031   CASBFixed = LoadStoreExclusiveFixed | 0x00A00000,
1032   CASHFixed = LoadStoreExclusiveFixed | 0x40A00000,
1033   CASPFixed = LoadStoreExclusiveFixed | 0x00200000,
1034   CAS_w    = CASFixed,
1035   CAS_x    = CASFixed | LSEBit_sz,
1036   CASA_w   = CASFixed | LSEBit_l,
1037   CASA_x   = CASFixed | LSEBit_l | LSEBit_sz,
1038   CASL_w   = CASFixed | LSEBit_o0,
1039   CASL_x   = CASFixed | LSEBit_o0 | LSEBit_sz,
1040   CASAL_w  = CASFixed | LSEBit_l | LSEBit_o0,
1041   CASAL_x  = CASFixed | LSEBit_l | LSEBit_o0 | LSEBit_sz,
1042   CASB     = CASBFixed,
1043   CASAB    = CASBFixed | LSEBit_l,
1044   CASLB    = CASBFixed | LSEBit_o0,
1045   CASALB   = CASBFixed | LSEBit_l | LSEBit_o0,
1046   CASH     = CASHFixed,
1047   CASAH    = CASHFixed | LSEBit_l,
1048   CASLH    = CASHFixed | LSEBit_o0,
1049   CASALH   = CASHFixed | LSEBit_l | LSEBit_o0,
1050   CASP_w   = CASPFixed,
1051   CASP_x   = CASPFixed | LSEBit_sz,
1052   CASPA_w  = CASPFixed | LSEBit_l,
1053   CASPA_x  = CASPFixed | LSEBit_l | LSEBit_sz,
1054   CASPL_w  = CASPFixed | LSEBit_o0,
1055   CASPL_x  = CASPFixed | LSEBit_o0 | LSEBit_sz,
1056   CASPAL_w = CASPFixed | LSEBit_l | LSEBit_o0,
1057   CASPAL_x = CASPFixed | LSEBit_l | LSEBit_o0 | LSEBit_sz
1058 };
1059 
1060 #define ATOMIC_MEMORY_SIMPLE_OPC_LIST(V) \
1061   V(LDADD, 0x00000000),                  \
1062   V(LDCLR, 0x00001000),                  \
1063   V(LDEOR, 0x00002000),                  \
1064   V(LDSET, 0x00003000),                  \
1065   V(LDSMAX, 0x00004000),                 \
1066   V(LDSMIN, 0x00005000),                 \
1067   V(LDUMAX, 0x00006000),                 \
1068   V(LDUMIN, 0x00007000)
1069 
1070 // Atomic memory.
1071 enum AtomicMemoryOp {
1072   AtomicMemoryFixed = 0x38200000,
1073   AtomicMemoryFMask = 0x3B200C00,
1074   AtomicMemoryMask = 0xFFE0FC00,
1075   SWPB = AtomicMemoryFixed | 0x00008000,
1076   SWPAB = AtomicMemoryFixed | 0x00808000,
1077   SWPLB = AtomicMemoryFixed | 0x00408000,
1078   SWPALB = AtomicMemoryFixed | 0x00C08000,
1079   SWPH = AtomicMemoryFixed | 0x40008000,
1080   SWPAH = AtomicMemoryFixed | 0x40808000,
1081   SWPLH = AtomicMemoryFixed | 0x40408000,
1082   SWPALH = AtomicMemoryFixed | 0x40C08000,
1083   SWP_w = AtomicMemoryFixed | 0x80008000,
1084   SWPA_w = AtomicMemoryFixed | 0x80808000,
1085   SWPL_w = AtomicMemoryFixed | 0x80408000,
1086   SWPAL_w = AtomicMemoryFixed | 0x80C08000,
1087   SWP_x = AtomicMemoryFixed | 0xC0008000,
1088   SWPA_x = AtomicMemoryFixed | 0xC0808000,
1089   SWPL_x = AtomicMemoryFixed | 0xC0408000,
1090   SWPAL_x = AtomicMemoryFixed | 0xC0C08000,
1091   LDAPRB = AtomicMemoryFixed | 0x0080C000,
1092   LDAPRH = AtomicMemoryFixed | 0x4080C000,
1093   LDAPR_w = AtomicMemoryFixed | 0x8080C000,
1094   LDAPR_x = AtomicMemoryFixed | 0xC080C000,
1095 
1096   AtomicMemorySimpleFMask = 0x3B208C00,
1097   AtomicMemorySimpleOpMask = 0x00007000,
1098 #define ATOMIC_MEMORY_SIMPLE(N, OP)              \
1099   N##Op = OP,                                    \
1100   N##B = AtomicMemoryFixed | OP,                 \
1101   N##AB = AtomicMemoryFixed | OP | 0x00800000,   \
1102   N##LB = AtomicMemoryFixed | OP | 0x00400000,   \
1103   N##ALB = AtomicMemoryFixed | OP | 0x00C00000,  \
1104   N##H = AtomicMemoryFixed | OP | 0x40000000,    \
1105   N##AH = AtomicMemoryFixed | OP | 0x40800000,   \
1106   N##LH = AtomicMemoryFixed | OP | 0x40400000,   \
1107   N##ALH = AtomicMemoryFixed | OP | 0x40C00000,  \
1108   N##_w = AtomicMemoryFixed | OP | 0x80000000,   \
1109   N##A_w = AtomicMemoryFixed | OP | 0x80800000,  \
1110   N##L_w = AtomicMemoryFixed | OP | 0x80400000,  \
1111   N##AL_w = AtomicMemoryFixed | OP | 0x80C00000, \
1112   N##_x = AtomicMemoryFixed | OP | 0xC0000000,   \
1113   N##A_x = AtomicMemoryFixed | OP | 0xC0800000,  \
1114   N##L_x = AtomicMemoryFixed | OP | 0xC0400000,  \
1115   N##AL_x = AtomicMemoryFixed | OP | 0xC0C00000
1116 
1117   ATOMIC_MEMORY_SIMPLE_OPC_LIST(ATOMIC_MEMORY_SIMPLE)
1118 #undef ATOMIC_MEMORY_SIMPLE
1119 };
1120 
1121 // Conditional compare.
1122 enum ConditionalCompareOp {
1123   ConditionalCompareMask = 0x60000000,
1124   CCMN                   = 0x20000000,
1125   CCMP                   = 0x60000000
1126 };
1127 
1128 // Conditional compare register.
1129 enum ConditionalCompareRegisterOp {
1130   ConditionalCompareRegisterFixed = 0x1A400000,
1131   ConditionalCompareRegisterFMask = 0x1FE00800,
1132   ConditionalCompareRegisterMask  = 0xFFE00C10,
1133   CCMN_w = ConditionalCompareRegisterFixed | CCMN,
1134   CCMN_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMN,
1135   CCMP_w = ConditionalCompareRegisterFixed | CCMP,
1136   CCMP_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMP
1137 };
1138 
1139 // Conditional compare immediate.
1140 enum ConditionalCompareImmediateOp {
1141   ConditionalCompareImmediateFixed = 0x1A400800,
1142   ConditionalCompareImmediateFMask = 0x1FE00800,
1143   ConditionalCompareImmediateMask  = 0xFFE00C10,
1144   CCMN_w_imm = ConditionalCompareImmediateFixed | CCMN,
1145   CCMN_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMN,
1146   CCMP_w_imm = ConditionalCompareImmediateFixed | CCMP,
1147   CCMP_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMP
1148 };
1149 
1150 // Conditional select.
1151 enum ConditionalSelectOp {
1152   ConditionalSelectFixed = 0x1A800000,
1153   ConditionalSelectFMask = 0x1FE00000,
1154   ConditionalSelectMask  = 0xFFE00C00,
1155   CSEL_w                 = ConditionalSelectFixed | 0x00000000,
1156   CSEL_x                 = ConditionalSelectFixed | 0x80000000,
1157   CSEL                   = CSEL_w,
1158   CSINC_w                = ConditionalSelectFixed | 0x00000400,
1159   CSINC_x                = ConditionalSelectFixed | 0x80000400,
1160   CSINC                  = CSINC_w,
1161   CSINV_w                = ConditionalSelectFixed | 0x40000000,
1162   CSINV_x                = ConditionalSelectFixed | 0xC0000000,
1163   CSINV                  = CSINV_w,
1164   CSNEG_w                = ConditionalSelectFixed | 0x40000400,
1165   CSNEG_x                = ConditionalSelectFixed | 0xC0000400,
1166   CSNEG                  = CSNEG_w
1167 };
1168 
1169 // Data processing 1 source.
1170 enum DataProcessing1SourceOp {
1171   DataProcessing1SourceFixed = 0x5AC00000,
1172   DataProcessing1SourceFMask = 0x5FE00000,
1173   DataProcessing1SourceMask  = 0xFFFFFC00,
1174   RBIT    = DataProcessing1SourceFixed | 0x00000000,
1175   RBIT_w  = RBIT,
1176   RBIT_x  = RBIT | SixtyFourBits,
1177   REV16   = DataProcessing1SourceFixed | 0x00000400,
1178   REV16_w = REV16,
1179   REV16_x = REV16 | SixtyFourBits,
1180   REV     = DataProcessing1SourceFixed | 0x00000800,
1181   REV_w   = REV,
1182   REV32_x = REV | SixtyFourBits,
1183   REV_x   = DataProcessing1SourceFixed | SixtyFourBits | 0x00000C00,
1184   CLZ     = DataProcessing1SourceFixed | 0x00001000,
1185   CLZ_w   = CLZ,
1186   CLZ_x   = CLZ | SixtyFourBits,
1187   CLS     = DataProcessing1SourceFixed | 0x00001400,
1188   CLS_w   = CLS,
1189   CLS_x   = CLS | SixtyFourBits,
1190 
1191   // Pointer authentication instructions in Armv8.3.
1192   PACIA  = DataProcessing1SourceFixed | 0x80010000,
1193   PACIB  = DataProcessing1SourceFixed | 0x80010400,
1194   PACDA  = DataProcessing1SourceFixed | 0x80010800,
1195   PACDB  = DataProcessing1SourceFixed | 0x80010C00,
1196   AUTIA  = DataProcessing1SourceFixed | 0x80011000,
1197   AUTIB  = DataProcessing1SourceFixed | 0x80011400,
1198   AUTDA  = DataProcessing1SourceFixed | 0x80011800,
1199   AUTDB  = DataProcessing1SourceFixed | 0x80011C00,
1200   PACIZA = DataProcessing1SourceFixed | 0x80012000,
1201   PACIZB = DataProcessing1SourceFixed | 0x80012400,
1202   PACDZA = DataProcessing1SourceFixed | 0x80012800,
1203   PACDZB = DataProcessing1SourceFixed | 0x80012C00,
1204   AUTIZA = DataProcessing1SourceFixed | 0x80013000,
1205   AUTIZB = DataProcessing1SourceFixed | 0x80013400,
1206   AUTDZA = DataProcessing1SourceFixed | 0x80013800,
1207   AUTDZB = DataProcessing1SourceFixed | 0x80013C00,
1208   XPACI  = DataProcessing1SourceFixed | 0x80014000,
1209   XPACD  = DataProcessing1SourceFixed | 0x80014400
1210 };
1211 
1212 // Data processing 2 source.
1213 enum DataProcessing2SourceOp {
1214   DataProcessing2SourceFixed = 0x1AC00000,
1215   DataProcessing2SourceFMask = 0x5FE00000,
1216   DataProcessing2SourceMask  = 0xFFE0FC00,
1217   UDIV_w  = DataProcessing2SourceFixed | 0x00000800,
1218   UDIV_x  = DataProcessing2SourceFixed | 0x80000800,
1219   UDIV    = UDIV_w,
1220   SDIV_w  = DataProcessing2SourceFixed | 0x00000C00,
1221   SDIV_x  = DataProcessing2SourceFixed | 0x80000C00,
1222   SDIV    = SDIV_w,
1223   LSLV_w  = DataProcessing2SourceFixed | 0x00002000,
1224   LSLV_x  = DataProcessing2SourceFixed | 0x80002000,
1225   LSLV    = LSLV_w,
1226   LSRV_w  = DataProcessing2SourceFixed | 0x00002400,
1227   LSRV_x  = DataProcessing2SourceFixed | 0x80002400,
1228   LSRV    = LSRV_w,
1229   ASRV_w  = DataProcessing2SourceFixed | 0x00002800,
1230   ASRV_x  = DataProcessing2SourceFixed | 0x80002800,
1231   ASRV    = ASRV_w,
1232   RORV_w  = DataProcessing2SourceFixed | 0x00002C00,
1233   RORV_x  = DataProcessing2SourceFixed | 0x80002C00,
1234   RORV    = RORV_w,
1235   PACGA   = DataProcessing2SourceFixed | SixtyFourBits | 0x00003000,
1236   CRC32B  = DataProcessing2SourceFixed | 0x00004000,
1237   CRC32H  = DataProcessing2SourceFixed | 0x00004400,
1238   CRC32W  = DataProcessing2SourceFixed | 0x00004800,
1239   CRC32X  = DataProcessing2SourceFixed | SixtyFourBits | 0x00004C00,
1240   CRC32CB = DataProcessing2SourceFixed | 0x00005000,
1241   CRC32CH = DataProcessing2SourceFixed | 0x00005400,
1242   CRC32CW = DataProcessing2SourceFixed | 0x00005800,
1243   CRC32CX = DataProcessing2SourceFixed | SixtyFourBits | 0x00005C00
1244 };
1245 
1246 // Data processing 3 source.
1247 enum DataProcessing3SourceOp {
1248   DataProcessing3SourceFixed = 0x1B000000,
1249   DataProcessing3SourceFMask = 0x1F000000,
1250   DataProcessing3SourceMask  = 0xFFE08000,
1251   MADD_w                     = DataProcessing3SourceFixed | 0x00000000,
1252   MADD_x                     = DataProcessing3SourceFixed | 0x80000000,
1253   MADD                       = MADD_w,
1254   MSUB_w                     = DataProcessing3SourceFixed | 0x00008000,
1255   MSUB_x                     = DataProcessing3SourceFixed | 0x80008000,
1256   MSUB                       = MSUB_w,
1257   SMADDL_x                   = DataProcessing3SourceFixed | 0x80200000,
1258   SMSUBL_x                   = DataProcessing3SourceFixed | 0x80208000,
1259   SMULH_x                    = DataProcessing3SourceFixed | 0x80400000,
1260   UMADDL_x                   = DataProcessing3SourceFixed | 0x80A00000,
1261   UMSUBL_x                   = DataProcessing3SourceFixed | 0x80A08000,
1262   UMULH_x                    = DataProcessing3SourceFixed | 0x80C00000
1263 };
1264 
1265 // Floating point compare.
1266 enum FPCompareOp {
1267   FPCompareFixed = 0x1E202000,
1268   FPCompareFMask = 0x5F203C00,
1269   FPCompareMask  = 0xFFE0FC1F,
1270   FCMP_h         = FPCompareFixed | FP16 | 0x00000000,
1271   FCMP_s         = FPCompareFixed | 0x00000000,
1272   FCMP_d         = FPCompareFixed | FP64 | 0x00000000,
1273   FCMP           = FCMP_s,
1274   FCMP_h_zero    = FPCompareFixed | FP16 | 0x00000008,
1275   FCMP_s_zero    = FPCompareFixed | 0x00000008,
1276   FCMP_d_zero    = FPCompareFixed | FP64 | 0x00000008,
1277   FCMP_zero      = FCMP_s_zero,
1278   FCMPE_h        = FPCompareFixed | FP16 | 0x00000010,
1279   FCMPE_s        = FPCompareFixed | 0x00000010,
1280   FCMPE_d        = FPCompareFixed | FP64 | 0x00000010,
1281   FCMPE          = FCMPE_s,
1282   FCMPE_h_zero   = FPCompareFixed | FP16 | 0x00000018,
1283   FCMPE_s_zero   = FPCompareFixed | 0x00000018,
1284   FCMPE_d_zero   = FPCompareFixed | FP64 | 0x00000018,
1285   FCMPE_zero     = FCMPE_s_zero
1286 };
1287 
1288 // Floating point conditional compare.
1289 enum FPConditionalCompareOp {
1290   FPConditionalCompareFixed = 0x1E200400,
1291   FPConditionalCompareFMask = 0x5F200C00,
1292   FPConditionalCompareMask  = 0xFFE00C10,
1293   FCCMP_h                   = FPConditionalCompareFixed | FP16 | 0x00000000,
1294   FCCMP_s                   = FPConditionalCompareFixed | 0x00000000,
1295   FCCMP_d                   = FPConditionalCompareFixed | FP64 | 0x00000000,
1296   FCCMP                     = FCCMP_s,
1297   FCCMPE_h                  = FPConditionalCompareFixed | FP16 | 0x00000010,
1298   FCCMPE_s                  = FPConditionalCompareFixed | 0x00000010,
1299   FCCMPE_d                  = FPConditionalCompareFixed | FP64 | 0x00000010,
1300   FCCMPE                    = FCCMPE_s
1301 };
1302 
1303 // Floating point conditional select.
1304 enum FPConditionalSelectOp {
1305   FPConditionalSelectFixed = 0x1E200C00,
1306   FPConditionalSelectFMask = 0x5F200C00,
1307   FPConditionalSelectMask  = 0xFFE00C00,
1308   FCSEL_h                  = FPConditionalSelectFixed | FP16 | 0x00000000,
1309   FCSEL_s                  = FPConditionalSelectFixed | 0x00000000,
1310   FCSEL_d                  = FPConditionalSelectFixed | FP64 | 0x00000000,
1311   FCSEL                    = FCSEL_s
1312 };
1313 
1314 // Floating point immediate.
1315 enum FPImmediateOp {
1316   FPImmediateFixed = 0x1E201000,
1317   FPImmediateFMask = 0x5F201C00,
1318   FPImmediateMask  = 0xFFE01C00,
1319   FMOV_h_imm       = FPImmediateFixed | FP16 | 0x00000000,
1320   FMOV_s_imm       = FPImmediateFixed | 0x00000000,
1321   FMOV_d_imm       = FPImmediateFixed | FP64 | 0x00000000
1322 };
1323 
1324 // Floating point data processing 1 source.
1325 enum FPDataProcessing1SourceOp {
1326   FPDataProcessing1SourceFixed = 0x1E204000,
1327   FPDataProcessing1SourceFMask = 0x5F207C00,
1328   FPDataProcessing1SourceMask  = 0xFFFFFC00,
1329   FMOV_h   = FPDataProcessing1SourceFixed | FP16 | 0x00000000,
1330   FMOV_s   = FPDataProcessing1SourceFixed | 0x00000000,
1331   FMOV_d   = FPDataProcessing1SourceFixed | FP64 | 0x00000000,
1332   FMOV     = FMOV_s,
1333   FABS_h   = FPDataProcessing1SourceFixed | FP16 | 0x00008000,
1334   FABS_s   = FPDataProcessing1SourceFixed | 0x00008000,
1335   FABS_d   = FPDataProcessing1SourceFixed | FP64 | 0x00008000,
1336   FABS     = FABS_s,
1337   FNEG_h   = FPDataProcessing1SourceFixed | FP16 | 0x00010000,
1338   FNEG_s   = FPDataProcessing1SourceFixed | 0x00010000,
1339   FNEG_d   = FPDataProcessing1SourceFixed | FP64 | 0x00010000,
1340   FNEG     = FNEG_s,
1341   FSQRT_h  = FPDataProcessing1SourceFixed | FP16 | 0x00018000,
1342   FSQRT_s  = FPDataProcessing1SourceFixed | 0x00018000,
1343   FSQRT_d  = FPDataProcessing1SourceFixed | FP64 | 0x00018000,
1344   FSQRT    = FSQRT_s,
1345   FCVT_ds  = FPDataProcessing1SourceFixed | 0x00028000,
1346   FCVT_sd  = FPDataProcessing1SourceFixed | FP64 | 0x00020000,
1347   FCVT_hs  = FPDataProcessing1SourceFixed | 0x00038000,
1348   FCVT_hd  = FPDataProcessing1SourceFixed | FP64 | 0x00038000,
1349   FCVT_sh  = FPDataProcessing1SourceFixed | 0x00C20000,
1350   FCVT_dh  = FPDataProcessing1SourceFixed | 0x00C28000,
1351   FRINTN_h = FPDataProcessing1SourceFixed | FP16 | 0x00040000,
1352   FRINTN_s = FPDataProcessing1SourceFixed | 0x00040000,
1353   FRINTN_d = FPDataProcessing1SourceFixed | FP64 | 0x00040000,
1354   FRINTN   = FRINTN_s,
1355   FRINTP_h = FPDataProcessing1SourceFixed | FP16 | 0x00048000,
1356   FRINTP_s = FPDataProcessing1SourceFixed | 0x00048000,
1357   FRINTP_d = FPDataProcessing1SourceFixed | FP64 | 0x00048000,
1358   FRINTP   = FRINTP_s,
1359   FRINTM_h = FPDataProcessing1SourceFixed | FP16 | 0x00050000,
1360   FRINTM_s = FPDataProcessing1SourceFixed | 0x00050000,
1361   FRINTM_d = FPDataProcessing1SourceFixed | FP64 | 0x00050000,
1362   FRINTM   = FRINTM_s,
1363   FRINTZ_h = FPDataProcessing1SourceFixed | FP16 | 0x00058000,
1364   FRINTZ_s = FPDataProcessing1SourceFixed | 0x00058000,
1365   FRINTZ_d = FPDataProcessing1SourceFixed | FP64 | 0x00058000,
1366   FRINTZ   = FRINTZ_s,
1367   FRINTA_h = FPDataProcessing1SourceFixed | FP16 | 0x00060000,
1368   FRINTA_s = FPDataProcessing1SourceFixed | 0x00060000,
1369   FRINTA_d = FPDataProcessing1SourceFixed | FP64 | 0x00060000,
1370   FRINTA   = FRINTA_s,
1371   FRINTX_h = FPDataProcessing1SourceFixed | FP16 | 0x00070000,
1372   FRINTX_s = FPDataProcessing1SourceFixed | 0x00070000,
1373   FRINTX_d = FPDataProcessing1SourceFixed | FP64 | 0x00070000,
1374   FRINTX   = FRINTX_s,
1375   FRINTI_h = FPDataProcessing1SourceFixed | FP16 | 0x00078000,
1376   FRINTI_s = FPDataProcessing1SourceFixed | 0x00078000,
1377   FRINTI_d = FPDataProcessing1SourceFixed | FP64 | 0x00078000,
1378   FRINTI   = FRINTI_s
1379 };
1380 
1381 // Floating point data processing 2 source.
1382 enum FPDataProcessing2SourceOp {
1383   FPDataProcessing2SourceFixed = 0x1E200800,
1384   FPDataProcessing2SourceFMask = 0x5F200C00,
1385   FPDataProcessing2SourceMask  = 0xFFE0FC00,
1386   FMUL     = FPDataProcessing2SourceFixed | 0x00000000,
1387   FMUL_h   = FMUL | FP16,
1388   FMUL_s   = FMUL,
1389   FMUL_d   = FMUL | FP64,
1390   FDIV     = FPDataProcessing2SourceFixed | 0x00001000,
1391   FDIV_h   = FDIV | FP16,
1392   FDIV_s   = FDIV,
1393   FDIV_d   = FDIV | FP64,
1394   FADD     = FPDataProcessing2SourceFixed | 0x00002000,
1395   FADD_h   = FADD | FP16,
1396   FADD_s   = FADD,
1397   FADD_d   = FADD | FP64,
1398   FSUB     = FPDataProcessing2SourceFixed | 0x00003000,
1399   FSUB_h   = FSUB | FP16,
1400   FSUB_s   = FSUB,
1401   FSUB_d   = FSUB | FP64,
1402   FMAX     = FPDataProcessing2SourceFixed | 0x00004000,
1403   FMAX_h   = FMAX | FP16,
1404   FMAX_s   = FMAX,
1405   FMAX_d   = FMAX | FP64,
1406   FMIN     = FPDataProcessing2SourceFixed | 0x00005000,
1407   FMIN_h   = FMIN | FP16,
1408   FMIN_s   = FMIN,
1409   FMIN_d   = FMIN | FP64,
1410   FMAXNM   = FPDataProcessing2SourceFixed | 0x00006000,
1411   FMAXNM_h = FMAXNM | FP16,
1412   FMAXNM_s = FMAXNM,
1413   FMAXNM_d = FMAXNM | FP64,
1414   FMINNM   = FPDataProcessing2SourceFixed | 0x00007000,
1415   FMINNM_h = FMINNM | FP16,
1416   FMINNM_s = FMINNM,
1417   FMINNM_d = FMINNM | FP64,
1418   FNMUL    = FPDataProcessing2SourceFixed | 0x00008000,
1419   FNMUL_h  = FNMUL | FP16,
1420   FNMUL_s  = FNMUL,
1421   FNMUL_d  = FNMUL | FP64
1422 };
1423 
1424 // Floating point data processing 3 source.
1425 enum FPDataProcessing3SourceOp {
1426   FPDataProcessing3SourceFixed = 0x1F000000,
1427   FPDataProcessing3SourceFMask = 0x5F000000,
1428   FPDataProcessing3SourceMask  = 0xFFE08000,
1429   FMADD_h                      = FPDataProcessing3SourceFixed | 0x00C00000,
1430   FMSUB_h                      = FPDataProcessing3SourceFixed | 0x00C08000,
1431   FNMADD_h                     = FPDataProcessing3SourceFixed | 0x00E00000,
1432   FNMSUB_h                     = FPDataProcessing3SourceFixed | 0x00E08000,
1433   FMADD_s                      = FPDataProcessing3SourceFixed | 0x00000000,
1434   FMSUB_s                      = FPDataProcessing3SourceFixed | 0x00008000,
1435   FNMADD_s                     = FPDataProcessing3SourceFixed | 0x00200000,
1436   FNMSUB_s                     = FPDataProcessing3SourceFixed | 0x00208000,
1437   FMADD_d                      = FPDataProcessing3SourceFixed | 0x00400000,
1438   FMSUB_d                      = FPDataProcessing3SourceFixed | 0x00408000,
1439   FNMADD_d                     = FPDataProcessing3SourceFixed | 0x00600000,
1440   FNMSUB_d                     = FPDataProcessing3SourceFixed | 0x00608000
1441 };
1442 
1443 // Conversion between floating point and integer.
1444 enum FPIntegerConvertOp {
1445   FPIntegerConvertFixed = 0x1E200000,
1446   FPIntegerConvertFMask = 0x5F20FC00,
1447   FPIntegerConvertMask  = 0xFFFFFC00,
1448   FCVTNS    = FPIntegerConvertFixed | 0x00000000,
1449   FCVTNS_wh = FCVTNS | FP16,
1450   FCVTNS_xh = FCVTNS | SixtyFourBits | FP16,
1451   FCVTNS_ws = FCVTNS,
1452   FCVTNS_xs = FCVTNS | SixtyFourBits,
1453   FCVTNS_wd = FCVTNS | FP64,
1454   FCVTNS_xd = FCVTNS | SixtyFourBits | FP64,
1455   FCVTNU    = FPIntegerConvertFixed | 0x00010000,
1456   FCVTNU_wh = FCVTNU | FP16,
1457   FCVTNU_xh = FCVTNU | SixtyFourBits | FP16,
1458   FCVTNU_ws = FCVTNU,
1459   FCVTNU_xs = FCVTNU | SixtyFourBits,
1460   FCVTNU_wd = FCVTNU | FP64,
1461   FCVTNU_xd = FCVTNU | SixtyFourBits | FP64,
1462   FCVTPS    = FPIntegerConvertFixed | 0x00080000,
1463   FCVTPS_wh = FCVTPS | FP16,
1464   FCVTPS_xh = FCVTPS | SixtyFourBits | FP16,
1465   FCVTPS_ws = FCVTPS,
1466   FCVTPS_xs = FCVTPS | SixtyFourBits,
1467   FCVTPS_wd = FCVTPS | FP64,
1468   FCVTPS_xd = FCVTPS | SixtyFourBits | FP64,
1469   FCVTPU    = FPIntegerConvertFixed | 0x00090000,
1470   FCVTPU_wh = FCVTPU | FP16,
1471   FCVTPU_xh = FCVTPU | SixtyFourBits | FP16,
1472   FCVTPU_ws = FCVTPU,
1473   FCVTPU_xs = FCVTPU | SixtyFourBits,
1474   FCVTPU_wd = FCVTPU | FP64,
1475   FCVTPU_xd = FCVTPU | SixtyFourBits | FP64,
1476   FCVTMS    = FPIntegerConvertFixed | 0x00100000,
1477   FCVTMS_wh = FCVTMS | FP16,
1478   FCVTMS_xh = FCVTMS | SixtyFourBits | FP16,
1479   FCVTMS_ws = FCVTMS,
1480   FCVTMS_xs = FCVTMS | SixtyFourBits,
1481   FCVTMS_wd = FCVTMS | FP64,
1482   FCVTMS_xd = FCVTMS | SixtyFourBits | FP64,
1483   FCVTMU    = FPIntegerConvertFixed | 0x00110000,
1484   FCVTMU_wh = FCVTMU | FP16,
1485   FCVTMU_xh = FCVTMU | SixtyFourBits | FP16,
1486   FCVTMU_ws = FCVTMU,
1487   FCVTMU_xs = FCVTMU | SixtyFourBits,
1488   FCVTMU_wd = FCVTMU | FP64,
1489   FCVTMU_xd = FCVTMU | SixtyFourBits | FP64,
1490   FCVTZS    = FPIntegerConvertFixed | 0x00180000,
1491   FCVTZS_wh = FCVTZS | FP16,
1492   FCVTZS_xh = FCVTZS | SixtyFourBits | FP16,
1493   FCVTZS_ws = FCVTZS,
1494   FCVTZS_xs = FCVTZS | SixtyFourBits,
1495   FCVTZS_wd = FCVTZS | FP64,
1496   FCVTZS_xd = FCVTZS | SixtyFourBits | FP64,
1497   FCVTZU    = FPIntegerConvertFixed | 0x00190000,
1498   FCVTZU_wh = FCVTZU | FP16,
1499   FCVTZU_xh = FCVTZU | SixtyFourBits | FP16,
1500   FCVTZU_ws = FCVTZU,
1501   FCVTZU_xs = FCVTZU | SixtyFourBits,
1502   FCVTZU_wd = FCVTZU | FP64,
1503   FCVTZU_xd = FCVTZU | SixtyFourBits | FP64,
1504   SCVTF     = FPIntegerConvertFixed | 0x00020000,
1505   SCVTF_hw  = SCVTF | FP16,
1506   SCVTF_hx  = SCVTF | SixtyFourBits | FP16,
1507   SCVTF_sw  = SCVTF,
1508   SCVTF_sx  = SCVTF | SixtyFourBits,
1509   SCVTF_dw  = SCVTF | FP64,
1510   SCVTF_dx  = SCVTF | SixtyFourBits | FP64,
1511   UCVTF     = FPIntegerConvertFixed | 0x00030000,
1512   UCVTF_hw  = UCVTF | FP16,
1513   UCVTF_hx  = UCVTF | SixtyFourBits | FP16,
1514   UCVTF_sw  = UCVTF,
1515   UCVTF_sx  = UCVTF | SixtyFourBits,
1516   UCVTF_dw  = UCVTF | FP64,
1517   UCVTF_dx  = UCVTF | SixtyFourBits | FP64,
1518   FCVTAS    = FPIntegerConvertFixed | 0x00040000,
1519   FCVTAS_wh = FCVTAS | FP16,
1520   FCVTAS_xh = FCVTAS | SixtyFourBits | FP16,
1521   FCVTAS_ws = FCVTAS,
1522   FCVTAS_xs = FCVTAS | SixtyFourBits,
1523   FCVTAS_wd = FCVTAS | FP64,
1524   FCVTAS_xd = FCVTAS | SixtyFourBits | FP64,
1525   FCVTAU    = FPIntegerConvertFixed | 0x00050000,
1526   FCVTAU_wh = FCVTAU | FP16,
1527   FCVTAU_xh = FCVTAU | SixtyFourBits | FP16,
1528   FCVTAU_ws = FCVTAU,
1529   FCVTAU_xs = FCVTAU | SixtyFourBits,
1530   FCVTAU_wd = FCVTAU | FP64,
1531   FCVTAU_xd = FCVTAU | SixtyFourBits | FP64,
1532   FMOV_wh   = FPIntegerConvertFixed | 0x00060000 | FP16,
1533   FMOV_hw   = FPIntegerConvertFixed | 0x00070000 | FP16,
1534   FMOV_xh   = FMOV_wh | SixtyFourBits,
1535   FMOV_hx   = FMOV_hw | SixtyFourBits,
1536   FMOV_ws   = FPIntegerConvertFixed | 0x00060000,
1537   FMOV_sw   = FPIntegerConvertFixed | 0x00070000,
1538   FMOV_xd   = FMOV_ws | SixtyFourBits | FP64,
1539   FMOV_dx   = FMOV_sw | SixtyFourBits | FP64,
1540   FMOV_d1_x = FPIntegerConvertFixed | SixtyFourBits | 0x008F0000,
1541   FMOV_x_d1 = FPIntegerConvertFixed | SixtyFourBits | 0x008E0000,
1542   FJCVTZS   = FPIntegerConvertFixed | FP64 | 0x001E0000
1543 };
1544 
1545 // Conversion between fixed point and floating point.
1546 enum FPFixedPointConvertOp {
1547   FPFixedPointConvertFixed = 0x1E000000,
1548   FPFixedPointConvertFMask = 0x5F200000,
1549   FPFixedPointConvertMask  = 0xFFFF0000,
1550   FCVTZS_fixed    = FPFixedPointConvertFixed | 0x00180000,
1551   FCVTZS_wh_fixed = FCVTZS_fixed | FP16,
1552   FCVTZS_xh_fixed = FCVTZS_fixed | SixtyFourBits | FP16,
1553   FCVTZS_ws_fixed = FCVTZS_fixed,
1554   FCVTZS_xs_fixed = FCVTZS_fixed | SixtyFourBits,
1555   FCVTZS_wd_fixed = FCVTZS_fixed | FP64,
1556   FCVTZS_xd_fixed = FCVTZS_fixed | SixtyFourBits | FP64,
1557   FCVTZU_fixed    = FPFixedPointConvertFixed | 0x00190000,
1558   FCVTZU_wh_fixed = FCVTZU_fixed | FP16,
1559   FCVTZU_xh_fixed = FCVTZU_fixed | SixtyFourBits | FP16,
1560   FCVTZU_ws_fixed = FCVTZU_fixed,
1561   FCVTZU_xs_fixed = FCVTZU_fixed | SixtyFourBits,
1562   FCVTZU_wd_fixed = FCVTZU_fixed | FP64,
1563   FCVTZU_xd_fixed = FCVTZU_fixed | SixtyFourBits | FP64,
1564   SCVTF_fixed     = FPFixedPointConvertFixed | 0x00020000,
1565   SCVTF_hw_fixed  = SCVTF_fixed | FP16,
1566   SCVTF_hx_fixed  = SCVTF_fixed | SixtyFourBits | FP16,
1567   SCVTF_sw_fixed  = SCVTF_fixed,
1568   SCVTF_sx_fixed  = SCVTF_fixed | SixtyFourBits,
1569   SCVTF_dw_fixed  = SCVTF_fixed | FP64,
1570   SCVTF_dx_fixed  = SCVTF_fixed | SixtyFourBits | FP64,
1571   UCVTF_fixed     = FPFixedPointConvertFixed | 0x00030000,
1572   UCVTF_hw_fixed  = UCVTF_fixed | FP16,
1573   UCVTF_hx_fixed  = UCVTF_fixed | SixtyFourBits | FP16,
1574   UCVTF_sw_fixed  = UCVTF_fixed,
1575   UCVTF_sx_fixed  = UCVTF_fixed | SixtyFourBits,
1576   UCVTF_dw_fixed  = UCVTF_fixed | FP64,
1577   UCVTF_dx_fixed  = UCVTF_fixed | SixtyFourBits | FP64
1578 };
1579 
1580 // Crypto - two register SHA.
1581 enum Crypto2RegSHAOp {
1582   Crypto2RegSHAFixed = 0x5E280800,
1583   Crypto2RegSHAFMask = 0xFF3E0C00
1584 };
1585 
1586 // Crypto - three register SHA.
1587 enum Crypto3RegSHAOp {
1588   Crypto3RegSHAFixed = 0x5E000000,
1589   Crypto3RegSHAFMask = 0xFF208C00
1590 };
1591 
1592 // Crypto - AES.
1593 enum CryptoAESOp {
1594   CryptoAESFixed = 0x4E280800,
1595   CryptoAESFMask = 0xFF3E0C00
1596 };
1597 
1598 // NEON instructions with two register operands.
1599 enum NEON2RegMiscOp {
1600   NEON2RegMiscFixed = 0x0E200800,
1601   NEON2RegMiscFMask = 0x9F3E0C00,
1602   NEON2RegMiscMask  = 0xBF3FFC00,
1603   NEON2RegMiscUBit  = 0x20000000,
1604   NEON_REV64     = NEON2RegMiscFixed | 0x00000000,
1605   NEON_REV32     = NEON2RegMiscFixed | 0x20000000,
1606   NEON_REV16     = NEON2RegMiscFixed | 0x00001000,
1607   NEON_SADDLP    = NEON2RegMiscFixed | 0x00002000,
1608   NEON_UADDLP    = NEON_SADDLP | NEON2RegMiscUBit,
1609   NEON_SUQADD    = NEON2RegMiscFixed | 0x00003000,
1610   NEON_USQADD    = NEON_SUQADD | NEON2RegMiscUBit,
1611   NEON_CLS       = NEON2RegMiscFixed | 0x00004000,
1612   NEON_CLZ       = NEON2RegMiscFixed | 0x20004000,
1613   NEON_CNT       = NEON2RegMiscFixed | 0x00005000,
1614   NEON_RBIT_NOT  = NEON2RegMiscFixed | 0x20005000,
1615   NEON_SADALP    = NEON2RegMiscFixed | 0x00006000,
1616   NEON_UADALP    = NEON_SADALP | NEON2RegMiscUBit,
1617   NEON_SQABS     = NEON2RegMiscFixed | 0x00007000,
1618   NEON_SQNEG     = NEON2RegMiscFixed | 0x20007000,
1619   NEON_CMGT_zero = NEON2RegMiscFixed | 0x00008000,
1620   NEON_CMGE_zero = NEON2RegMiscFixed | 0x20008000,
1621   NEON_CMEQ_zero = NEON2RegMiscFixed | 0x00009000,
1622   NEON_CMLE_zero = NEON2RegMiscFixed | 0x20009000,
1623   NEON_CMLT_zero = NEON2RegMiscFixed | 0x0000A000,
1624   NEON_ABS       = NEON2RegMiscFixed | 0x0000B000,
1625   NEON_NEG       = NEON2RegMiscFixed | 0x2000B000,
1626   NEON_XTN       = NEON2RegMiscFixed | 0x00012000,
1627   NEON_SQXTUN    = NEON2RegMiscFixed | 0x20012000,
1628   NEON_SHLL      = NEON2RegMiscFixed | 0x20013000,
1629   NEON_SQXTN     = NEON2RegMiscFixed | 0x00014000,
1630   NEON_UQXTN     = NEON_SQXTN | NEON2RegMiscUBit,
1631 
1632   NEON2RegMiscOpcode = 0x0001F000,
1633   NEON_RBIT_NOT_opcode = NEON_RBIT_NOT & NEON2RegMiscOpcode,
1634   NEON_NEG_opcode = NEON_NEG & NEON2RegMiscOpcode,
1635   NEON_XTN_opcode = NEON_XTN & NEON2RegMiscOpcode,
1636   NEON_UQXTN_opcode = NEON_UQXTN & NEON2RegMiscOpcode,
1637 
1638   // These instructions use only one bit of the size field. The other bit is
1639   // used to distinguish between instructions.
1640   NEON2RegMiscFPMask = NEON2RegMiscMask | 0x00800000,
1641   NEON_FABS   = NEON2RegMiscFixed | 0x0080F000,
1642   NEON_FNEG   = NEON2RegMiscFixed | 0x2080F000,
1643   NEON_FCVTN  = NEON2RegMiscFixed | 0x00016000,
1644   NEON_FCVTXN = NEON2RegMiscFixed | 0x20016000,
1645   NEON_FCVTL  = NEON2RegMiscFixed | 0x00017000,
1646   NEON_FRINTN = NEON2RegMiscFixed | 0x00018000,
1647   NEON_FRINTA = NEON2RegMiscFixed | 0x20018000,
1648   NEON_FRINTP = NEON2RegMiscFixed | 0x00818000,
1649   NEON_FRINTM = NEON2RegMiscFixed | 0x00019000,
1650   NEON_FRINTX = NEON2RegMiscFixed | 0x20019000,
1651   NEON_FRINTZ = NEON2RegMiscFixed | 0x00819000,
1652   NEON_FRINTI = NEON2RegMiscFixed | 0x20819000,
1653   NEON_FCVTNS = NEON2RegMiscFixed | 0x0001A000,
1654   NEON_FCVTNU = NEON_FCVTNS | NEON2RegMiscUBit,
1655   NEON_FCVTPS = NEON2RegMiscFixed | 0x0081A000,
1656   NEON_FCVTPU = NEON_FCVTPS | NEON2RegMiscUBit,
1657   NEON_FCVTMS = NEON2RegMiscFixed | 0x0001B000,
1658   NEON_FCVTMU = NEON_FCVTMS | NEON2RegMiscUBit,
1659   NEON_FCVTZS = NEON2RegMiscFixed | 0x0081B000,
1660   NEON_FCVTZU = NEON_FCVTZS | NEON2RegMiscUBit,
1661   NEON_FCVTAS = NEON2RegMiscFixed | 0x0001C000,
1662   NEON_FCVTAU = NEON_FCVTAS | NEON2RegMiscUBit,
1663   NEON_FSQRT  = NEON2RegMiscFixed | 0x2081F000,
1664   NEON_SCVTF  = NEON2RegMiscFixed | 0x0001D000,
1665   NEON_UCVTF  = NEON_SCVTF | NEON2RegMiscUBit,
1666   NEON_URSQRTE = NEON2RegMiscFixed | 0x2081C000,
1667   NEON_URECPE  = NEON2RegMiscFixed | 0x0081C000,
1668   NEON_FRSQRTE = NEON2RegMiscFixed | 0x2081D000,
1669   NEON_FRECPE  = NEON2RegMiscFixed | 0x0081D000,
1670   NEON_FCMGT_zero = NEON2RegMiscFixed | 0x0080C000,
1671   NEON_FCMGE_zero = NEON2RegMiscFixed | 0x2080C000,
1672   NEON_FCMEQ_zero = NEON2RegMiscFixed | 0x0080D000,
1673   NEON_FCMLE_zero = NEON2RegMiscFixed | 0x2080D000,
1674   NEON_FCMLT_zero = NEON2RegMiscFixed | 0x0080E000,
1675 
1676   NEON_FCVTL_opcode = NEON_FCVTL & NEON2RegMiscOpcode,
1677   NEON_FCVTN_opcode = NEON_FCVTN & NEON2RegMiscOpcode
1678 };
1679 
1680 // NEON instructions with two register operands (FP16).
1681 enum NEON2RegMiscFP16Op {
1682   NEON2RegMiscFP16Fixed = 0x0E780800,
1683   NEON2RegMiscFP16FMask = 0x9F7E0C00,
1684   NEON2RegMiscFP16Mask  = 0xBFFFFC00,
1685   NEON_FRINTN_H     = NEON2RegMiscFP16Fixed | 0x00018000,
1686   NEON_FRINTM_H     = NEON2RegMiscFP16Fixed | 0x00019000,
1687   NEON_FCVTNS_H     = NEON2RegMiscFP16Fixed | 0x0001A000,
1688   NEON_FCVTMS_H     = NEON2RegMiscFP16Fixed | 0x0001B000,
1689   NEON_FCVTAS_H     = NEON2RegMiscFP16Fixed | 0x0001C000,
1690   NEON_SCVTF_H      = NEON2RegMiscFP16Fixed | 0x0001D000,
1691   NEON_FCMGT_H_zero = NEON2RegMiscFP16Fixed | 0x0080C000,
1692   NEON_FCMEQ_H_zero = NEON2RegMiscFP16Fixed | 0x0080D000,
1693   NEON_FCMLT_H_zero = NEON2RegMiscFP16Fixed | 0x0080E000,
1694   NEON_FABS_H       = NEON2RegMiscFP16Fixed | 0x0080F000,
1695   NEON_FRINTP_H     = NEON2RegMiscFP16Fixed | 0x00818000,
1696   NEON_FRINTZ_H     = NEON2RegMiscFP16Fixed | 0x00819000,
1697   NEON_FCVTPS_H     = NEON2RegMiscFP16Fixed | 0x0081A000,
1698   NEON_FCVTZS_H     = NEON2RegMiscFP16Fixed | 0x0081B000,
1699   NEON_FRECPE_H     = NEON2RegMiscFP16Fixed | 0x0081D000,
1700   NEON_FRINTA_H     = NEON2RegMiscFP16Fixed | 0x20018000,
1701   NEON_FRINTX_H     = NEON2RegMiscFP16Fixed | 0x20019000,
1702   NEON_FCVTNU_H     = NEON2RegMiscFP16Fixed | 0x2001A000,
1703   NEON_FCVTMU_H     = NEON2RegMiscFP16Fixed | 0x2001B000,
1704   NEON_FCVTAU_H     = NEON2RegMiscFP16Fixed | 0x2001C000,
1705   NEON_UCVTF_H      = NEON2RegMiscFP16Fixed | 0x2001D000,
1706   NEON_FCMGE_H_zero = NEON2RegMiscFP16Fixed | 0x2080C000,
1707   NEON_FCMLE_H_zero = NEON2RegMiscFP16Fixed | 0x2080D000,
1708   NEON_FNEG_H       = NEON2RegMiscFP16Fixed | 0x2080F000,
1709   NEON_FRINTI_H     = NEON2RegMiscFP16Fixed | 0x20819000,
1710   NEON_FCVTPU_H     = NEON2RegMiscFP16Fixed | 0x2081A000,
1711   NEON_FCVTZU_H     = NEON2RegMiscFP16Fixed | 0x2081B000,
1712   NEON_FRSQRTE_H    = NEON2RegMiscFP16Fixed | 0x2081D000,
1713   NEON_FSQRT_H      = NEON2RegMiscFP16Fixed | 0x2081F000
1714 };
1715 
1716 // NEON instructions with three same-type operands.
1717 enum NEON3SameOp {
1718   NEON3SameFixed = 0x0E200400,
1719   NEON3SameFMask = 0x9F200400,
1720   NEON3SameMask =  0xBF20FC00,
1721   NEON3SameUBit =  0x20000000,
1722   NEON_ADD    = NEON3SameFixed | 0x00008000,
1723   NEON_ADDP   = NEON3SameFixed | 0x0000B800,
1724   NEON_SHADD  = NEON3SameFixed | 0x00000000,
1725   NEON_SHSUB  = NEON3SameFixed | 0x00002000,
1726   NEON_SRHADD = NEON3SameFixed | 0x00001000,
1727   NEON_CMEQ   = NEON3SameFixed | NEON3SameUBit | 0x00008800,
1728   NEON_CMGE   = NEON3SameFixed | 0x00003800,
1729   NEON_CMGT   = NEON3SameFixed | 0x00003000,
1730   NEON_CMHI   = NEON3SameFixed | NEON3SameUBit | NEON_CMGT,
1731   NEON_CMHS   = NEON3SameFixed | NEON3SameUBit | NEON_CMGE,
1732   NEON_CMTST  = NEON3SameFixed | 0x00008800,
1733   NEON_MLA    = NEON3SameFixed | 0x00009000,
1734   NEON_MLS    = NEON3SameFixed | 0x20009000,
1735   NEON_MUL    = NEON3SameFixed | 0x00009800,
1736   NEON_PMUL   = NEON3SameFixed | 0x20009800,
1737   NEON_SRSHL  = NEON3SameFixed | 0x00005000,
1738   NEON_SQSHL  = NEON3SameFixed | 0x00004800,
1739   NEON_SQRSHL = NEON3SameFixed | 0x00005800,
1740   NEON_SSHL   = NEON3SameFixed | 0x00004000,
1741   NEON_SMAX   = NEON3SameFixed | 0x00006000,
1742   NEON_SMAXP  = NEON3SameFixed | 0x0000A000,
1743   NEON_SMIN   = NEON3SameFixed | 0x00006800,
1744   NEON_SMINP  = NEON3SameFixed | 0x0000A800,
1745   NEON_SABD   = NEON3SameFixed | 0x00007000,
1746   NEON_SABA   = NEON3SameFixed | 0x00007800,
1747   NEON_UABD   = NEON3SameFixed | NEON3SameUBit | NEON_SABD,
1748   NEON_UABA   = NEON3SameFixed | NEON3SameUBit | NEON_SABA,
1749   NEON_SQADD  = NEON3SameFixed | 0x00000800,
1750   NEON_SQSUB  = NEON3SameFixed | 0x00002800,
1751   NEON_SUB    = NEON3SameFixed | NEON3SameUBit | 0x00008000,
1752   NEON_UHADD  = NEON3SameFixed | NEON3SameUBit | NEON_SHADD,
1753   NEON_UHSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SHSUB,
1754   NEON_URHADD = NEON3SameFixed | NEON3SameUBit | NEON_SRHADD,
1755   NEON_UMAX   = NEON3SameFixed | NEON3SameUBit | NEON_SMAX,
1756   NEON_UMAXP  = NEON3SameFixed | NEON3SameUBit | NEON_SMAXP,
1757   NEON_UMIN   = NEON3SameFixed | NEON3SameUBit | NEON_SMIN,
1758   NEON_UMINP  = NEON3SameFixed | NEON3SameUBit | NEON_SMINP,
1759   NEON_URSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SRSHL,
1760   NEON_UQADD  = NEON3SameFixed | NEON3SameUBit | NEON_SQADD,
1761   NEON_UQRSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQRSHL,
1762   NEON_UQSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SQSHL,
1763   NEON_UQSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SQSUB,
1764   NEON_USHL   = NEON3SameFixed | NEON3SameUBit | NEON_SSHL,
1765   NEON_SQDMULH  = NEON3SameFixed | 0x0000B000,
1766   NEON_SQRDMULH = NEON3SameFixed | 0x2000B000,
1767 
1768   // NEON floating point instructions with three same-type operands.
1769   NEON3SameFPFixed = NEON3SameFixed | 0x0000C000,
1770   NEON3SameFPFMask = NEON3SameFMask | 0x0000C000,
1771   NEON3SameFPMask = NEON3SameMask | 0x00800000,
1772   NEON_FADD    = NEON3SameFixed | 0x0000D000,
1773   NEON_FSUB    = NEON3SameFixed | 0x0080D000,
1774   NEON_FMUL    = NEON3SameFixed | 0x2000D800,
1775   NEON_FDIV    = NEON3SameFixed | 0x2000F800,
1776   NEON_FMAX    = NEON3SameFixed | 0x0000F000,
1777   NEON_FMAXNM  = NEON3SameFixed | 0x0000C000,
1778   NEON_FMAXP   = NEON3SameFixed | 0x2000F000,
1779   NEON_FMAXNMP = NEON3SameFixed | 0x2000C000,
1780   NEON_FMIN    = NEON3SameFixed | 0x0080F000,
1781   NEON_FMINNM  = NEON3SameFixed | 0x0080C000,
1782   NEON_FMINP   = NEON3SameFixed | 0x2080F000,
1783   NEON_FMINNMP = NEON3SameFixed | 0x2080C000,
1784   NEON_FMLA    = NEON3SameFixed | 0x0000C800,
1785   NEON_FMLS    = NEON3SameFixed | 0x0080C800,
1786   NEON_FMULX   = NEON3SameFixed | 0x0000D800,
1787   NEON_FRECPS  = NEON3SameFixed | 0x0000F800,
1788   NEON_FRSQRTS = NEON3SameFixed | 0x0080F800,
1789   NEON_FABD    = NEON3SameFixed | 0x2080D000,
1790   NEON_FADDP   = NEON3SameFixed | 0x2000D000,
1791   NEON_FCMEQ   = NEON3SameFixed | 0x0000E000,
1792   NEON_FCMGE   = NEON3SameFixed | 0x2000E000,
1793   NEON_FCMGT   = NEON3SameFixed | 0x2080E000,
1794   NEON_FACGE   = NEON3SameFixed | 0x2000E800,
1795   NEON_FACGT   = NEON3SameFixed | 0x2080E800,
1796 
1797   // NEON logical instructions with three same-type operands.
1798   NEON3SameLogicalFixed = NEON3SameFixed | 0x00001800,
1799   NEON3SameLogicalFMask = NEON3SameFMask | 0x0000F800,
1800   NEON3SameLogicalMask = 0xBFE0FC00,
1801   NEON3SameLogicalFormatMask = NEON_Q,
1802   NEON_AND = NEON3SameLogicalFixed | 0x00000000,
1803   NEON_ORR = NEON3SameLogicalFixed | 0x00A00000,
1804   NEON_ORN = NEON3SameLogicalFixed | 0x00C00000,
1805   NEON_EOR = NEON3SameLogicalFixed | 0x20000000,
1806   NEON_BIC = NEON3SameLogicalFixed | 0x00400000,
1807   NEON_BIF = NEON3SameLogicalFixed | 0x20C00000,
1808   NEON_BIT = NEON3SameLogicalFixed | 0x20800000,
1809   NEON_BSL = NEON3SameLogicalFixed | 0x20400000
1810 };
1811 
1812 
1813 enum NEON3SameFP16 {
1814   NEON3SameFP16Fixed = 0x0E400400,
1815   NEON3SameFP16FMask = 0x9F60C400,
1816   NEON3SameFP16Mask =  0xBFE0FC00,
1817   NEON_FMAXNM_H  = NEON3SameFP16Fixed | 0x00000000,
1818   NEON_FMLA_H    = NEON3SameFP16Fixed | 0x00000800,
1819   NEON_FADD_H    = NEON3SameFP16Fixed | 0x00001000,
1820   NEON_FMULX_H   = NEON3SameFP16Fixed | 0x00001800,
1821   NEON_FCMEQ_H   = NEON3SameFP16Fixed | 0x00002000,
1822   NEON_FMAX_H    = NEON3SameFP16Fixed | 0x00003000,
1823   NEON_FRECPS_H  = NEON3SameFP16Fixed | 0x00003800,
1824   NEON_FMINNM_H  = NEON3SameFP16Fixed | 0x00800000,
1825   NEON_FMLS_H    = NEON3SameFP16Fixed | 0x00800800,
1826   NEON_FSUB_H    = NEON3SameFP16Fixed | 0x00801000,
1827   NEON_FMIN_H    = NEON3SameFP16Fixed | 0x00803000,
1828   NEON_FRSQRTS_H = NEON3SameFP16Fixed | 0x00803800,
1829   NEON_FMAXNMP_H = NEON3SameFP16Fixed | 0x20000000,
1830   NEON_FADDP_H   = NEON3SameFP16Fixed | 0x20001000,
1831   NEON_FMUL_H    = NEON3SameFP16Fixed | 0x20001800,
1832   NEON_FCMGE_H   = NEON3SameFP16Fixed | 0x20002000,
1833   NEON_FACGE_H   = NEON3SameFP16Fixed | 0x20002800,
1834   NEON_FMAXP_H   = NEON3SameFP16Fixed | 0x20003000,
1835   NEON_FDIV_H    = NEON3SameFP16Fixed | 0x20003800,
1836   NEON_FMINNMP_H = NEON3SameFP16Fixed | 0x20800000,
1837   NEON_FABD_H    = NEON3SameFP16Fixed | 0x20801000,
1838   NEON_FCMGT_H   = NEON3SameFP16Fixed | 0x20802000,
1839   NEON_FACGT_H   = NEON3SameFP16Fixed | 0x20802800,
1840   NEON_FMINP_H   = NEON3SameFP16Fixed | 0x20803000
1841 };
1842 
1843 
1844 // 'Extra' NEON instructions with three same-type operands.
1845 enum NEON3SameExtraOp {
1846   NEON3SameExtraFixed = 0x0E008400,
1847   NEON3SameExtraUBit = 0x20000000,
1848   NEON3SameExtraFMask = 0x9E208400,
1849   NEON3SameExtraMask = 0xBE20FC00,
1850   NEON_SQRDMLAH = NEON3SameExtraFixed | NEON3SameExtraUBit,
1851   NEON_SQRDMLSH = NEON3SameExtraFixed | NEON3SameExtraUBit | 0x00000800,
1852   NEON_SDOT = NEON3SameExtraFixed | 0x00001000,
1853   NEON_UDOT = NEON3SameExtraFixed | NEON3SameExtraUBit | 0x00001000,
1854 
1855   /* v8.3 Complex Numbers */
1856   NEON3SameExtraFCFixed = 0x2E00C400,
1857   NEON3SameExtraFCFMask = 0xBF20C400,
1858   // FCMLA fixes opcode<3:2>, and uses opcode<1:0> to encode <rotate>.
1859   NEON3SameExtraFCMLAMask = NEON3SameExtraFCFMask | 0x00006000,
1860   NEON_FCMLA = NEON3SameExtraFCFixed,
1861   // FCADD fixes opcode<3:2, 0>, and uses opcode<1> to encode <rotate>.
1862   NEON3SameExtraFCADDMask = NEON3SameExtraFCFMask | 0x00006800,
1863   NEON_FCADD = NEON3SameExtraFCFixed | 0x00002000
1864   // Other encodings under NEON3SameExtraFCFMask are UNALLOCATED.
1865 };
1866 
1867 // NEON instructions with three different-type operands.
1868 enum NEON3DifferentOp {
1869   NEON3DifferentFixed = 0x0E200000,
1870   NEON3DifferentFMask = 0x9F200C00,
1871   NEON3DifferentMask  = 0xFF20FC00,
1872   NEON_ADDHN    = NEON3DifferentFixed | 0x00004000,
1873   NEON_ADDHN2   = NEON_ADDHN | NEON_Q,
1874   NEON_PMULL    = NEON3DifferentFixed | 0x0000E000,
1875   NEON_PMULL2   = NEON_PMULL | NEON_Q,
1876   NEON_RADDHN   = NEON3DifferentFixed | 0x20004000,
1877   NEON_RADDHN2  = NEON_RADDHN | NEON_Q,
1878   NEON_RSUBHN   = NEON3DifferentFixed | 0x20006000,
1879   NEON_RSUBHN2  = NEON_RSUBHN | NEON_Q,
1880   NEON_SABAL    = NEON3DifferentFixed | 0x00005000,
1881   NEON_SABAL2   = NEON_SABAL | NEON_Q,
1882   NEON_SABDL    = NEON3DifferentFixed | 0x00007000,
1883   NEON_SABDL2   = NEON_SABDL | NEON_Q,
1884   NEON_SADDL    = NEON3DifferentFixed | 0x00000000,
1885   NEON_SADDL2   = NEON_SADDL | NEON_Q,
1886   NEON_SADDW    = NEON3DifferentFixed | 0x00001000,
1887   NEON_SADDW2   = NEON_SADDW | NEON_Q,
1888   NEON_SMLAL    = NEON3DifferentFixed | 0x00008000,
1889   NEON_SMLAL2   = NEON_SMLAL | NEON_Q,
1890   NEON_SMLSL    = NEON3DifferentFixed | 0x0000A000,
1891   NEON_SMLSL2   = NEON_SMLSL | NEON_Q,
1892   NEON_SMULL    = NEON3DifferentFixed | 0x0000C000,
1893   NEON_SMULL2   = NEON_SMULL | NEON_Q,
1894   NEON_SSUBL    = NEON3DifferentFixed | 0x00002000,
1895   NEON_SSUBL2   = NEON_SSUBL | NEON_Q,
1896   NEON_SSUBW    = NEON3DifferentFixed | 0x00003000,
1897   NEON_SSUBW2   = NEON_SSUBW | NEON_Q,
1898   NEON_SQDMLAL  = NEON3DifferentFixed | 0x00009000,
1899   NEON_SQDMLAL2 = NEON_SQDMLAL | NEON_Q,
1900   NEON_SQDMLSL  = NEON3DifferentFixed | 0x0000B000,
1901   NEON_SQDMLSL2 = NEON_SQDMLSL | NEON_Q,
1902   NEON_SQDMULL  = NEON3DifferentFixed | 0x0000D000,
1903   NEON_SQDMULL2 = NEON_SQDMULL | NEON_Q,
1904   NEON_SUBHN    = NEON3DifferentFixed | 0x00006000,
1905   NEON_SUBHN2   = NEON_SUBHN | NEON_Q,
1906   NEON_UABAL    = NEON_SABAL | NEON3SameUBit,
1907   NEON_UABAL2   = NEON_UABAL | NEON_Q,
1908   NEON_UABDL    = NEON_SABDL | NEON3SameUBit,
1909   NEON_UABDL2   = NEON_UABDL | NEON_Q,
1910   NEON_UADDL    = NEON_SADDL | NEON3SameUBit,
1911   NEON_UADDL2   = NEON_UADDL | NEON_Q,
1912   NEON_UADDW    = NEON_SADDW | NEON3SameUBit,
1913   NEON_UADDW2   = NEON_UADDW | NEON_Q,
1914   NEON_UMLAL    = NEON_SMLAL | NEON3SameUBit,
1915   NEON_UMLAL2   = NEON_UMLAL | NEON_Q,
1916   NEON_UMLSL    = NEON_SMLSL | NEON3SameUBit,
1917   NEON_UMLSL2   = NEON_UMLSL | NEON_Q,
1918   NEON_UMULL    = NEON_SMULL | NEON3SameUBit,
1919   NEON_UMULL2   = NEON_UMULL | NEON_Q,
1920   NEON_USUBL    = NEON_SSUBL | NEON3SameUBit,
1921   NEON_USUBL2   = NEON_USUBL | NEON_Q,
1922   NEON_USUBW    = NEON_SSUBW | NEON3SameUBit,
1923   NEON_USUBW2   = NEON_USUBW | NEON_Q
1924 };
1925 
1926 // NEON instructions operating across vectors.
1927 enum NEONAcrossLanesOp {
1928   NEONAcrossLanesFixed = 0x0E300800,
1929   NEONAcrossLanesFMask = 0x9F3E0C00,
1930   NEONAcrossLanesMask  = 0xBF3FFC00,
1931   NEON_ADDV   = NEONAcrossLanesFixed | 0x0001B000,
1932   NEON_SADDLV = NEONAcrossLanesFixed | 0x00003000,
1933   NEON_UADDLV = NEONAcrossLanesFixed | 0x20003000,
1934   NEON_SMAXV  = NEONAcrossLanesFixed | 0x0000A000,
1935   NEON_SMINV  = NEONAcrossLanesFixed | 0x0001A000,
1936   NEON_UMAXV  = NEONAcrossLanesFixed | 0x2000A000,
1937   NEON_UMINV  = NEONAcrossLanesFixed | 0x2001A000,
1938 
1939   NEONAcrossLanesFP16Fixed = NEONAcrossLanesFixed | 0x0000C000,
1940   NEONAcrossLanesFP16FMask = NEONAcrossLanesFMask | 0x2000C000,
1941   NEONAcrossLanesFP16Mask  = NEONAcrossLanesMask  | 0x20800000,
1942   NEON_FMAXNMV_H = NEONAcrossLanesFP16Fixed | 0x00000000,
1943   NEON_FMAXV_H   = NEONAcrossLanesFP16Fixed | 0x00003000,
1944   NEON_FMINNMV_H = NEONAcrossLanesFP16Fixed | 0x00800000,
1945   NEON_FMINV_H   = NEONAcrossLanesFP16Fixed | 0x00803000,
1946 
1947   // NEON floating point across instructions.
1948   NEONAcrossLanesFPFixed = NEONAcrossLanesFixed | 0x2000C000,
1949   NEONAcrossLanesFPFMask = NEONAcrossLanesFMask | 0x2000C000,
1950   NEONAcrossLanesFPMask  = NEONAcrossLanesMask  | 0x20800000,
1951 
1952   NEON_FMAXV   = NEONAcrossLanesFPFixed | 0x2000F000,
1953   NEON_FMINV   = NEONAcrossLanesFPFixed | 0x2080F000,
1954   NEON_FMAXNMV = NEONAcrossLanesFPFixed | 0x2000C000,
1955   NEON_FMINNMV = NEONAcrossLanesFPFixed | 0x2080C000
1956 };
1957 
1958 // NEON instructions with indexed element operand.
1959 enum NEONByIndexedElementOp {
1960   NEONByIndexedElementFixed = 0x0F000000,
1961   NEONByIndexedElementFMask = 0x9F000400,
1962   NEONByIndexedElementMask  = 0xBF00F400,
1963   NEON_MUL_byelement   = NEONByIndexedElementFixed | 0x00008000,
1964   NEON_MLA_byelement   = NEONByIndexedElementFixed | 0x20000000,
1965   NEON_MLS_byelement   = NEONByIndexedElementFixed | 0x20004000,
1966   NEON_SMULL_byelement = NEONByIndexedElementFixed | 0x0000A000,
1967   NEON_SMLAL_byelement = NEONByIndexedElementFixed | 0x00002000,
1968   NEON_SMLSL_byelement = NEONByIndexedElementFixed | 0x00006000,
1969   NEON_UMULL_byelement = NEONByIndexedElementFixed | 0x2000A000,
1970   NEON_UMLAL_byelement = NEONByIndexedElementFixed | 0x20002000,
1971   NEON_UMLSL_byelement = NEONByIndexedElementFixed | 0x20006000,
1972   NEON_SQDMULL_byelement = NEONByIndexedElementFixed | 0x0000B000,
1973   NEON_SQDMLAL_byelement = NEONByIndexedElementFixed | 0x00003000,
1974   NEON_SQDMLSL_byelement = NEONByIndexedElementFixed | 0x00007000,
1975   NEON_SQDMULH_byelement  = NEONByIndexedElementFixed | 0x0000C000,
1976   NEON_SQRDMULH_byelement = NEONByIndexedElementFixed | 0x0000D000,
1977   NEON_SDOT_byelement = NEONByIndexedElementFixed | 0x0000E000,
1978   NEON_SQRDMLAH_byelement = NEONByIndexedElementFixed | 0x2000D000,
1979   NEON_UDOT_byelement = NEONByIndexedElementFixed | 0x2000E000,
1980   NEON_SQRDMLSH_byelement = NEONByIndexedElementFixed | 0x2000F000,
1981   NEON_FMLA_H_byelement   = NEONByIndexedElementFixed | 0x00001000,
1982   NEON_FMLS_H_byelement   = NEONByIndexedElementFixed | 0x00005000,
1983   NEON_FMUL_H_byelement   = NEONByIndexedElementFixed | 0x00009000,
1984   NEON_FMULX_H_byelement  = NEONByIndexedElementFixed | 0x20009000,
1985 
1986   // Floating point instructions.
1987   NEONByIndexedElementFPFixed = NEONByIndexedElementFixed | 0x00800000,
1988   NEONByIndexedElementFPMask = NEONByIndexedElementMask | 0x00800000,
1989   NEON_FMLA_byelement  = NEONByIndexedElementFPFixed | 0x00001000,
1990   NEON_FMLS_byelement  = NEONByIndexedElementFPFixed | 0x00005000,
1991   NEON_FMUL_byelement  = NEONByIndexedElementFPFixed | 0x00009000,
1992   NEON_FMULX_byelement = NEONByIndexedElementFPFixed | 0x20009000,
1993   NEON_FCMLA_byelement = NEONByIndexedElementFixed | 0x20001000,
1994 
1995   // Complex instruction(s) this is necessary because 'rot' encoding moves into the NEONByIndex..Mask space
1996   NEONByIndexedElementFPComplexMask = 0xBF009400
1997 };
1998 
1999 // NEON register copy.
2000 enum NEONCopyOp {
2001   NEONCopyFixed = 0x0E000400,
2002   NEONCopyFMask = 0x9FE08400,
2003   NEONCopyMask  = 0x3FE08400,
2004   NEONCopyInsElementMask = NEONCopyMask | 0x40000000,
2005   NEONCopyInsGeneralMask = NEONCopyMask | 0x40007800,
2006   NEONCopyDupElementMask = NEONCopyMask | 0x20007800,
2007   NEONCopyDupGeneralMask = NEONCopyDupElementMask,
2008   NEONCopyUmovMask       = NEONCopyMask | 0x20007800,
2009   NEONCopySmovMask       = NEONCopyMask | 0x20007800,
2010   NEON_INS_ELEMENT       = NEONCopyFixed | 0x60000000,
2011   NEON_INS_GENERAL       = NEONCopyFixed | 0x40001800,
2012   NEON_DUP_ELEMENT       = NEONCopyFixed | 0x00000000,
2013   NEON_DUP_GENERAL       = NEONCopyFixed | 0x00000800,
2014   NEON_SMOV              = NEONCopyFixed | 0x00002800,
2015   NEON_UMOV              = NEONCopyFixed | 0x00003800
2016 };
2017 
2018 // NEON extract.
2019 enum NEONExtractOp {
2020   NEONExtractFixed = 0x2E000000,
2021   NEONExtractFMask = 0xBF208400,
2022   NEONExtractMask =  0xBFE08400,
2023   NEON_EXT = NEONExtractFixed | 0x00000000
2024 };
2025 
2026 enum NEONLoadStoreMultiOp {
2027   NEONLoadStoreMultiL    = 0x00400000,
2028   NEONLoadStoreMulti1_1v = 0x00007000,
2029   NEONLoadStoreMulti1_2v = 0x0000A000,
2030   NEONLoadStoreMulti1_3v = 0x00006000,
2031   NEONLoadStoreMulti1_4v = 0x00002000,
2032   NEONLoadStoreMulti2    = 0x00008000,
2033   NEONLoadStoreMulti3    = 0x00004000,
2034   NEONLoadStoreMulti4    = 0x00000000
2035 };
2036 
2037 // NEON load/store multiple structures.
2038 enum NEONLoadStoreMultiStructOp {
2039   NEONLoadStoreMultiStructFixed = 0x0C000000,
2040   NEONLoadStoreMultiStructFMask = 0xBFBF0000,
2041   NEONLoadStoreMultiStructMask  = 0xBFFFF000,
2042   NEONLoadStoreMultiStructStore = NEONLoadStoreMultiStructFixed,
2043   NEONLoadStoreMultiStructLoad  = NEONLoadStoreMultiStructFixed |
2044                                   NEONLoadStoreMultiL,
2045   NEON_LD1_1v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_1v,
2046   NEON_LD1_2v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_2v,
2047   NEON_LD1_3v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_3v,
2048   NEON_LD1_4v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_4v,
2049   NEON_LD2    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti2,
2050   NEON_LD3    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti3,
2051   NEON_LD4    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti4,
2052   NEON_ST1_1v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_1v,
2053   NEON_ST1_2v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_2v,
2054   NEON_ST1_3v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_3v,
2055   NEON_ST1_4v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_4v,
2056   NEON_ST2    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti2,
2057   NEON_ST3    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti3,
2058   NEON_ST4    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti4
2059 };
2060 
2061 // NEON load/store multiple structures with post-index addressing.
2062 enum NEONLoadStoreMultiStructPostIndexOp {
2063   NEONLoadStoreMultiStructPostIndexFixed = 0x0C800000,
2064   NEONLoadStoreMultiStructPostIndexFMask = 0xBFA00000,
2065   NEONLoadStoreMultiStructPostIndexMask  = 0xBFE0F000,
2066   NEONLoadStoreMultiStructPostIndex = 0x00800000,
2067   NEON_LD1_1v_post = NEON_LD1_1v | NEONLoadStoreMultiStructPostIndex,
2068   NEON_LD1_2v_post = NEON_LD1_2v | NEONLoadStoreMultiStructPostIndex,
2069   NEON_LD1_3v_post = NEON_LD1_3v | NEONLoadStoreMultiStructPostIndex,
2070   NEON_LD1_4v_post = NEON_LD1_4v | NEONLoadStoreMultiStructPostIndex,
2071   NEON_LD2_post = NEON_LD2 | NEONLoadStoreMultiStructPostIndex,
2072   NEON_LD3_post = NEON_LD3 | NEONLoadStoreMultiStructPostIndex,
2073   NEON_LD4_post = NEON_LD4 | NEONLoadStoreMultiStructPostIndex,
2074   NEON_ST1_1v_post = NEON_ST1_1v | NEONLoadStoreMultiStructPostIndex,
2075   NEON_ST1_2v_post = NEON_ST1_2v | NEONLoadStoreMultiStructPostIndex,
2076   NEON_ST1_3v_post = NEON_ST1_3v | NEONLoadStoreMultiStructPostIndex,
2077   NEON_ST1_4v_post = NEON_ST1_4v | NEONLoadStoreMultiStructPostIndex,
2078   NEON_ST2_post = NEON_ST2 | NEONLoadStoreMultiStructPostIndex,
2079   NEON_ST3_post = NEON_ST3 | NEONLoadStoreMultiStructPostIndex,
2080   NEON_ST4_post = NEON_ST4 | NEONLoadStoreMultiStructPostIndex
2081 };
2082 
2083 enum NEONLoadStoreSingleOp {
2084   NEONLoadStoreSingle1        = 0x00000000,
2085   NEONLoadStoreSingle2        = 0x00200000,
2086   NEONLoadStoreSingle3        = 0x00002000,
2087   NEONLoadStoreSingle4        = 0x00202000,
2088   NEONLoadStoreSingleL        = 0x00400000,
2089   NEONLoadStoreSingle_b       = 0x00000000,
2090   NEONLoadStoreSingle_h       = 0x00004000,
2091   NEONLoadStoreSingle_s       = 0x00008000,
2092   NEONLoadStoreSingle_d       = 0x00008400,
2093   NEONLoadStoreSingleAllLanes = 0x0000C000,
2094   NEONLoadStoreSingleLenMask  = 0x00202000
2095 };
2096 
2097 // NEON load/store single structure.
2098 enum NEONLoadStoreSingleStructOp {
2099   NEONLoadStoreSingleStructFixed = 0x0D000000,
2100   NEONLoadStoreSingleStructFMask = 0xBF9F0000,
2101   NEONLoadStoreSingleStructMask  = 0xBFFFE000,
2102   NEONLoadStoreSingleStructStore = NEONLoadStoreSingleStructFixed,
2103   NEONLoadStoreSingleStructLoad  = NEONLoadStoreSingleStructFixed |
2104                                    NEONLoadStoreSingleL,
2105   NEONLoadStoreSingleStructLoad1 = NEONLoadStoreSingle1 |
2106                                    NEONLoadStoreSingleStructLoad,
2107   NEONLoadStoreSingleStructLoad2 = NEONLoadStoreSingle2 |
2108                                    NEONLoadStoreSingleStructLoad,
2109   NEONLoadStoreSingleStructLoad3 = NEONLoadStoreSingle3 |
2110                                    NEONLoadStoreSingleStructLoad,
2111   NEONLoadStoreSingleStructLoad4 = NEONLoadStoreSingle4 |
2112                                    NEONLoadStoreSingleStructLoad,
2113   NEONLoadStoreSingleStructStore1 = NEONLoadStoreSingle1 |
2114                                     NEONLoadStoreSingleStructFixed,
2115   NEONLoadStoreSingleStructStore2 = NEONLoadStoreSingle2 |
2116                                     NEONLoadStoreSingleStructFixed,
2117   NEONLoadStoreSingleStructStore3 = NEONLoadStoreSingle3 |
2118                                     NEONLoadStoreSingleStructFixed,
2119   NEONLoadStoreSingleStructStore4 = NEONLoadStoreSingle4 |
2120                                     NEONLoadStoreSingleStructFixed,
2121   NEON_LD1_b = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_b,
2122   NEON_LD1_h = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_h,
2123   NEON_LD1_s = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_s,
2124   NEON_LD1_d = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_d,
2125   NEON_LD1R  = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingleAllLanes,
2126   NEON_ST1_b = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_b,
2127   NEON_ST1_h = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_h,
2128   NEON_ST1_s = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_s,
2129   NEON_ST1_d = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_d,
2130 
2131   NEON_LD2_b = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_b,
2132   NEON_LD2_h = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_h,
2133   NEON_LD2_s = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_s,
2134   NEON_LD2_d = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_d,
2135   NEON_LD2R  = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingleAllLanes,
2136   NEON_ST2_b = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_b,
2137   NEON_ST2_h = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_h,
2138   NEON_ST2_s = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_s,
2139   NEON_ST2_d = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_d,
2140 
2141   NEON_LD3_b = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_b,
2142   NEON_LD3_h = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_h,
2143   NEON_LD3_s = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_s,
2144   NEON_LD3_d = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_d,
2145   NEON_LD3R  = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingleAllLanes,
2146   NEON_ST3_b = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_b,
2147   NEON_ST3_h = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_h,
2148   NEON_ST3_s = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_s,
2149   NEON_ST3_d = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_d,
2150 
2151   NEON_LD4_b = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_b,
2152   NEON_LD4_h = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_h,
2153   NEON_LD4_s = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_s,
2154   NEON_LD4_d = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_d,
2155   NEON_LD4R  = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingleAllLanes,
2156   NEON_ST4_b = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_b,
2157   NEON_ST4_h = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_h,
2158   NEON_ST4_s = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_s,
2159   NEON_ST4_d = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_d
2160 };
2161 
2162 // NEON load/store single structure with post-index addressing.
2163 enum NEONLoadStoreSingleStructPostIndexOp {
2164   NEONLoadStoreSingleStructPostIndexFixed = 0x0D800000,
2165   NEONLoadStoreSingleStructPostIndexFMask = 0xBF800000,
2166   NEONLoadStoreSingleStructPostIndexMask  = 0xBFE0E000,
2167   NEONLoadStoreSingleStructPostIndex =      0x00800000,
2168   NEON_LD1_b_post = NEON_LD1_b | NEONLoadStoreSingleStructPostIndex,
2169   NEON_LD1_h_post = NEON_LD1_h | NEONLoadStoreSingleStructPostIndex,
2170   NEON_LD1_s_post = NEON_LD1_s | NEONLoadStoreSingleStructPostIndex,
2171   NEON_LD1_d_post = NEON_LD1_d | NEONLoadStoreSingleStructPostIndex,
2172   NEON_LD1R_post  = NEON_LD1R | NEONLoadStoreSingleStructPostIndex,
2173   NEON_ST1_b_post = NEON_ST1_b | NEONLoadStoreSingleStructPostIndex,
2174   NEON_ST1_h_post = NEON_ST1_h | NEONLoadStoreSingleStructPostIndex,
2175   NEON_ST1_s_post = NEON_ST1_s | NEONLoadStoreSingleStructPostIndex,
2176   NEON_ST1_d_post = NEON_ST1_d | NEONLoadStoreSingleStructPostIndex,
2177 
2178   NEON_LD2_b_post = NEON_LD2_b | NEONLoadStoreSingleStructPostIndex,
2179   NEON_LD2_h_post = NEON_LD2_h | NEONLoadStoreSingleStructPostIndex,
2180   NEON_LD2_s_post = NEON_LD2_s | NEONLoadStoreSingleStructPostIndex,
2181   NEON_LD2_d_post = NEON_LD2_d | NEONLoadStoreSingleStructPostIndex,
2182   NEON_LD2R_post  = NEON_LD2R | NEONLoadStoreSingleStructPostIndex,
2183   NEON_ST2_b_post = NEON_ST2_b | NEONLoadStoreSingleStructPostIndex,
2184   NEON_ST2_h_post = NEON_ST2_h | NEONLoadStoreSingleStructPostIndex,
2185   NEON_ST2_s_post = NEON_ST2_s | NEONLoadStoreSingleStructPostIndex,
2186   NEON_ST2_d_post = NEON_ST2_d | NEONLoadStoreSingleStructPostIndex,
2187 
2188   NEON_LD3_b_post = NEON_LD3_b | NEONLoadStoreSingleStructPostIndex,
2189   NEON_LD3_h_post = NEON_LD3_h | NEONLoadStoreSingleStructPostIndex,
2190   NEON_LD3_s_post = NEON_LD3_s | NEONLoadStoreSingleStructPostIndex,
2191   NEON_LD3_d_post = NEON_LD3_d | NEONLoadStoreSingleStructPostIndex,
2192   NEON_LD3R_post  = NEON_LD3R | NEONLoadStoreSingleStructPostIndex,
2193   NEON_ST3_b_post = NEON_ST3_b | NEONLoadStoreSingleStructPostIndex,
2194   NEON_ST3_h_post = NEON_ST3_h | NEONLoadStoreSingleStructPostIndex,
2195   NEON_ST3_s_post = NEON_ST3_s | NEONLoadStoreSingleStructPostIndex,
2196   NEON_ST3_d_post = NEON_ST3_d | NEONLoadStoreSingleStructPostIndex,
2197 
2198   NEON_LD4_b_post = NEON_LD4_b | NEONLoadStoreSingleStructPostIndex,
2199   NEON_LD4_h_post = NEON_LD4_h | NEONLoadStoreSingleStructPostIndex,
2200   NEON_LD4_s_post = NEON_LD4_s | NEONLoadStoreSingleStructPostIndex,
2201   NEON_LD4_d_post = NEON_LD4_d | NEONLoadStoreSingleStructPostIndex,
2202   NEON_LD4R_post  = NEON_LD4R | NEONLoadStoreSingleStructPostIndex,
2203   NEON_ST4_b_post = NEON_ST4_b | NEONLoadStoreSingleStructPostIndex,
2204   NEON_ST4_h_post = NEON_ST4_h | NEONLoadStoreSingleStructPostIndex,
2205   NEON_ST4_s_post = NEON_ST4_s | NEONLoadStoreSingleStructPostIndex,
2206   NEON_ST4_d_post = NEON_ST4_d | NEONLoadStoreSingleStructPostIndex
2207 };
2208 
2209 // NEON modified immediate.
2210 enum NEONModifiedImmediateOp {
2211   NEONModifiedImmediateFixed = 0x0F000400,
2212   NEONModifiedImmediateFMask = 0x9FF80400,
2213   NEONModifiedImmediateOpBit = 0x20000000,
2214   NEONModifiedImmediate_FMOV = NEONModifiedImmediateFixed | 0x00000800,
2215   NEONModifiedImmediate_MOVI = NEONModifiedImmediateFixed | 0x00000000,
2216   NEONModifiedImmediate_MVNI = NEONModifiedImmediateFixed | 0x20000000,
2217   NEONModifiedImmediate_ORR  = NEONModifiedImmediateFixed | 0x00001000,
2218   NEONModifiedImmediate_BIC  = NEONModifiedImmediateFixed | 0x20001000
2219 };
2220 
2221 // NEON shift immediate.
2222 enum NEONShiftImmediateOp {
2223   NEONShiftImmediateFixed = 0x0F000400,
2224   NEONShiftImmediateFMask = 0x9F800400,
2225   NEONShiftImmediateMask  = 0xBF80FC00,
2226   NEONShiftImmediateUBit  = 0x20000000,
2227   NEON_SHL      = NEONShiftImmediateFixed | 0x00005000,
2228   NEON_SSHLL    = NEONShiftImmediateFixed | 0x0000A000,
2229   NEON_USHLL    = NEONShiftImmediateFixed | 0x2000A000,
2230   NEON_SLI      = NEONShiftImmediateFixed | 0x20005000,
2231   NEON_SRI      = NEONShiftImmediateFixed | 0x20004000,
2232   NEON_SHRN     = NEONShiftImmediateFixed | 0x00008000,
2233   NEON_RSHRN    = NEONShiftImmediateFixed | 0x00008800,
2234   NEON_UQSHRN   = NEONShiftImmediateFixed | 0x20009000,
2235   NEON_UQRSHRN  = NEONShiftImmediateFixed | 0x20009800,
2236   NEON_SQSHRN   = NEONShiftImmediateFixed | 0x00009000,
2237   NEON_SQRSHRN  = NEONShiftImmediateFixed | 0x00009800,
2238   NEON_SQSHRUN  = NEONShiftImmediateFixed | 0x20008000,
2239   NEON_SQRSHRUN = NEONShiftImmediateFixed | 0x20008800,
2240   NEON_SSHR     = NEONShiftImmediateFixed | 0x00000000,
2241   NEON_SRSHR    = NEONShiftImmediateFixed | 0x00002000,
2242   NEON_USHR     = NEONShiftImmediateFixed | 0x20000000,
2243   NEON_URSHR    = NEONShiftImmediateFixed | 0x20002000,
2244   NEON_SSRA     = NEONShiftImmediateFixed | 0x00001000,
2245   NEON_SRSRA    = NEONShiftImmediateFixed | 0x00003000,
2246   NEON_USRA     = NEONShiftImmediateFixed | 0x20001000,
2247   NEON_URSRA    = NEONShiftImmediateFixed | 0x20003000,
2248   NEON_SQSHLU   = NEONShiftImmediateFixed | 0x20006000,
2249   NEON_SCVTF_imm = NEONShiftImmediateFixed | 0x0000E000,
2250   NEON_UCVTF_imm = NEONShiftImmediateFixed | 0x2000E000,
2251   NEON_FCVTZS_imm = NEONShiftImmediateFixed | 0x0000F800,
2252   NEON_FCVTZU_imm = NEONShiftImmediateFixed | 0x2000F800,
2253   NEON_SQSHL_imm = NEONShiftImmediateFixed | 0x00007000,
2254   NEON_UQSHL_imm = NEONShiftImmediateFixed | 0x20007000
2255 };
2256 
2257 // NEON table.
2258 enum NEONTableOp {
2259   NEONTableFixed = 0x0E000000,
2260   NEONTableFMask = 0xBF208C00,
2261   NEONTableExt   = 0x00001000,
2262   NEONTableMask  = 0xBF20FC00,
2263   NEON_TBL_1v    = NEONTableFixed | 0x00000000,
2264   NEON_TBL_2v    = NEONTableFixed | 0x00002000,
2265   NEON_TBL_3v    = NEONTableFixed | 0x00004000,
2266   NEON_TBL_4v    = NEONTableFixed | 0x00006000,
2267   NEON_TBX_1v    = NEON_TBL_1v | NEONTableExt,
2268   NEON_TBX_2v    = NEON_TBL_2v | NEONTableExt,
2269   NEON_TBX_3v    = NEON_TBL_3v | NEONTableExt,
2270   NEON_TBX_4v    = NEON_TBL_4v | NEONTableExt
2271 };
2272 
2273 // NEON perm.
2274 enum NEONPermOp {
2275   NEONPermFixed = 0x0E000800,
2276   NEONPermFMask = 0xBF208C00,
2277   NEONPermMask  = 0x3F20FC00,
2278   NEON_UZP1 = NEONPermFixed | 0x00001000,
2279   NEON_TRN1 = NEONPermFixed | 0x00002000,
2280   NEON_ZIP1 = NEONPermFixed | 0x00003000,
2281   NEON_UZP2 = NEONPermFixed | 0x00005000,
2282   NEON_TRN2 = NEONPermFixed | 0x00006000,
2283   NEON_ZIP2 = NEONPermFixed | 0x00007000
2284 };
2285 
2286 // NEON scalar instructions with two register operands.
2287 enum NEONScalar2RegMiscOp {
2288   NEONScalar2RegMiscFixed = 0x5E200800,
2289   NEONScalar2RegMiscFMask = 0xDF3E0C00,
2290   NEONScalar2RegMiscMask = NEON_Q | NEONScalar | NEON2RegMiscMask,
2291   NEON_CMGT_zero_scalar = NEON_Q | NEONScalar | NEON_CMGT_zero,
2292   NEON_CMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_CMEQ_zero,
2293   NEON_CMLT_zero_scalar = NEON_Q | NEONScalar | NEON_CMLT_zero,
2294   NEON_CMGE_zero_scalar = NEON_Q | NEONScalar | NEON_CMGE_zero,
2295   NEON_CMLE_zero_scalar = NEON_Q | NEONScalar | NEON_CMLE_zero,
2296   NEON_ABS_scalar       = NEON_Q | NEONScalar | NEON_ABS,
2297   NEON_SQABS_scalar     = NEON_Q | NEONScalar | NEON_SQABS,
2298   NEON_NEG_scalar       = NEON_Q | NEONScalar | NEON_NEG,
2299   NEON_SQNEG_scalar     = NEON_Q | NEONScalar | NEON_SQNEG,
2300   NEON_SQXTN_scalar     = NEON_Q | NEONScalar | NEON_SQXTN,
2301   NEON_UQXTN_scalar     = NEON_Q | NEONScalar | NEON_UQXTN,
2302   NEON_SQXTUN_scalar    = NEON_Q | NEONScalar | NEON_SQXTUN,
2303   NEON_SUQADD_scalar    = NEON_Q | NEONScalar | NEON_SUQADD,
2304   NEON_USQADD_scalar    = NEON_Q | NEONScalar | NEON_USQADD,
2305 
2306   NEONScalar2RegMiscOpcode = NEON2RegMiscOpcode,
2307   NEON_NEG_scalar_opcode = NEON_NEG_scalar & NEONScalar2RegMiscOpcode,
2308 
2309   NEONScalar2RegMiscFPMask  = NEONScalar2RegMiscMask | 0x00800000,
2310   NEON_FRSQRTE_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE,
2311   NEON_FRECPE_scalar     = NEON_Q | NEONScalar | NEON_FRECPE,
2312   NEON_SCVTF_scalar      = NEON_Q | NEONScalar | NEON_SCVTF,
2313   NEON_UCVTF_scalar      = NEON_Q | NEONScalar | NEON_UCVTF,
2314   NEON_FCMGT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_zero,
2315   NEON_FCMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_zero,
2316   NEON_FCMLT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_zero,
2317   NEON_FCMGE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_zero,
2318   NEON_FCMLE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_zero,
2319   NEON_FRECPX_scalar     = NEONScalar2RegMiscFixed | 0x0081F000,
2320   NEON_FCVTNS_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS,
2321   NEON_FCVTNU_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU,
2322   NEON_FCVTPS_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS,
2323   NEON_FCVTPU_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU,
2324   NEON_FCVTMS_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS,
2325   NEON_FCVTMU_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU,
2326   NEON_FCVTZS_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS,
2327   NEON_FCVTZU_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU,
2328   NEON_FCVTAS_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS,
2329   NEON_FCVTAU_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU,
2330   NEON_FCVTXN_scalar     = NEON_Q | NEONScalar | NEON_FCVTXN
2331 };
2332 
2333 // NEON instructions with two register operands (FP16).
2334 enum NEONScalar2RegMiscFP16Op {
2335   NEONScalar2RegMiscFP16Fixed = 0x5E780800,
2336   NEONScalar2RegMiscFP16FMask = 0xDF7E0C00,
2337   NEONScalar2RegMiscFP16Mask  = 0xFFFFFC00,
2338   NEON_FCVTNS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS_H,
2339   NEON_FCVTMS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS_H,
2340   NEON_FCVTAS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS_H,
2341   NEON_SCVTF_H_scalar      = NEON_Q | NEONScalar | NEON_SCVTF_H,
2342   NEON_FCMGT_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_H_zero,
2343   NEON_FCMEQ_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_H_zero,
2344   NEON_FCMLT_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_H_zero,
2345   NEON_FCVTPS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS_H,
2346   NEON_FCVTZS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS_H,
2347   NEON_FRECPE_H_scalar     = NEON_Q | NEONScalar | NEON_FRECPE_H,
2348   NEON_FRECPX_H_scalar     = NEONScalar2RegMiscFP16Fixed | 0x0081F000,
2349   NEON_FCVTNU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU_H,
2350   NEON_FCVTMU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU_H,
2351   NEON_FCVTAU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU_H,
2352   NEON_UCVTF_H_scalar      = NEON_Q | NEONScalar | NEON_UCVTF_H,
2353   NEON_FCMGE_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_H_zero,
2354   NEON_FCMLE_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_H_zero,
2355   NEON_FCVTPU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU_H,
2356   NEON_FCVTZU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU_H,
2357   NEON_FRSQRTE_H_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE_H
2358 };
2359 
2360 // NEON scalar instructions with three same-type operands.
2361 enum NEONScalar3SameOp {
2362   NEONScalar3SameFixed = 0x5E200400,
2363   NEONScalar3SameFMask = 0xDF200400,
2364   NEONScalar3SameMask  = 0xFF20FC00,
2365   NEON_ADD_scalar    = NEON_Q | NEONScalar | NEON_ADD,
2366   NEON_CMEQ_scalar   = NEON_Q | NEONScalar | NEON_CMEQ,
2367   NEON_CMGE_scalar   = NEON_Q | NEONScalar | NEON_CMGE,
2368   NEON_CMGT_scalar   = NEON_Q | NEONScalar | NEON_CMGT,
2369   NEON_CMHI_scalar   = NEON_Q | NEONScalar | NEON_CMHI,
2370   NEON_CMHS_scalar   = NEON_Q | NEONScalar | NEON_CMHS,
2371   NEON_CMTST_scalar  = NEON_Q | NEONScalar | NEON_CMTST,
2372   NEON_SUB_scalar    = NEON_Q | NEONScalar | NEON_SUB,
2373   NEON_UQADD_scalar  = NEON_Q | NEONScalar | NEON_UQADD,
2374   NEON_SQADD_scalar  = NEON_Q | NEONScalar | NEON_SQADD,
2375   NEON_UQSUB_scalar  = NEON_Q | NEONScalar | NEON_UQSUB,
2376   NEON_SQSUB_scalar  = NEON_Q | NEONScalar | NEON_SQSUB,
2377   NEON_USHL_scalar   = NEON_Q | NEONScalar | NEON_USHL,
2378   NEON_SSHL_scalar   = NEON_Q | NEONScalar | NEON_SSHL,
2379   NEON_UQSHL_scalar  = NEON_Q | NEONScalar | NEON_UQSHL,
2380   NEON_SQSHL_scalar  = NEON_Q | NEONScalar | NEON_SQSHL,
2381   NEON_URSHL_scalar  = NEON_Q | NEONScalar | NEON_URSHL,
2382   NEON_SRSHL_scalar  = NEON_Q | NEONScalar | NEON_SRSHL,
2383   NEON_UQRSHL_scalar = NEON_Q | NEONScalar | NEON_UQRSHL,
2384   NEON_SQRSHL_scalar = NEON_Q | NEONScalar | NEON_SQRSHL,
2385   NEON_SQDMULH_scalar = NEON_Q | NEONScalar | NEON_SQDMULH,
2386   NEON_SQRDMULH_scalar = NEON_Q | NEONScalar | NEON_SQRDMULH,
2387 
2388   // NEON floating point scalar instructions with three same-type operands.
2389   NEONScalar3SameFPFixed = NEONScalar3SameFixed | 0x0000C000,
2390   NEONScalar3SameFPFMask = NEONScalar3SameFMask | 0x0000C000,
2391   NEONScalar3SameFPMask  = NEONScalar3SameMask | 0x00800000,
2392   NEON_FACGE_scalar   = NEON_Q | NEONScalar | NEON_FACGE,
2393   NEON_FACGT_scalar   = NEON_Q | NEONScalar | NEON_FACGT,
2394   NEON_FCMEQ_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ,
2395   NEON_FCMGE_scalar   = NEON_Q | NEONScalar | NEON_FCMGE,
2396   NEON_FCMGT_scalar   = NEON_Q | NEONScalar | NEON_FCMGT,
2397   NEON_FMULX_scalar   = NEON_Q | NEONScalar | NEON_FMULX,
2398   NEON_FRECPS_scalar  = NEON_Q | NEONScalar | NEON_FRECPS,
2399   NEON_FRSQRTS_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS,
2400   NEON_FABD_scalar    = NEON_Q | NEONScalar | NEON_FABD
2401 };
2402 
2403 // NEON scalar FP16 instructions with three same-type operands.
2404 enum NEONScalar3SameFP16Op {
2405   NEONScalar3SameFP16Fixed = 0x5E400400,
2406   NEONScalar3SameFP16FMask = 0xDF60C400,
2407   NEONScalar3SameFP16Mask  = 0xFFE0FC00,
2408   NEON_FABD_H_scalar    = NEON_Q | NEONScalar | NEON_FABD_H,
2409   NEON_FMULX_H_scalar   = NEON_Q | NEONScalar | NEON_FMULX_H,
2410   NEON_FCMEQ_H_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ_H,
2411   NEON_FCMGE_H_scalar   = NEON_Q | NEONScalar | NEON_FCMGE_H,
2412   NEON_FCMGT_H_scalar   = NEON_Q | NEONScalar | NEON_FCMGT_H,
2413   NEON_FACGE_H_scalar   = NEON_Q | NEONScalar | NEON_FACGE_H,
2414   NEON_FACGT_H_scalar   = NEON_Q | NEONScalar | NEON_FACGT_H,
2415   NEON_FRECPS_H_scalar  = NEON_Q | NEONScalar | NEON_FRECPS_H,
2416   NEON_FRSQRTS_H_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS_H
2417 };
2418 
2419 // 'Extra' NEON scalar instructions with three same-type operands.
2420 enum NEONScalar3SameExtraOp {
2421   NEONScalar3SameExtraFixed = 0x5E008400,
2422   NEONScalar3SameExtraFMask = 0xDF208400,
2423   NEONScalar3SameExtraMask = 0xFF20FC00,
2424   NEON_SQRDMLAH_scalar = NEON_Q | NEONScalar | NEON_SQRDMLAH,
2425   NEON_SQRDMLSH_scalar = NEON_Q | NEONScalar | NEON_SQRDMLSH
2426 };
2427 
2428 // NEON scalar instructions with three different-type operands.
2429 enum NEONScalar3DiffOp {
2430   NEONScalar3DiffFixed = 0x5E200000,
2431   NEONScalar3DiffFMask = 0xDF200C00,
2432   NEONScalar3DiffMask  = NEON_Q | NEONScalar | NEON3DifferentMask,
2433   NEON_SQDMLAL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL,
2434   NEON_SQDMLSL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL,
2435   NEON_SQDMULL_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL
2436 };
2437 
2438 // NEON scalar instructions with indexed element operand.
2439 enum NEONScalarByIndexedElementOp {
2440   NEONScalarByIndexedElementFixed = 0x5F000000,
2441   NEONScalarByIndexedElementFMask = 0xDF000400,
2442   NEONScalarByIndexedElementMask  = 0xFF00F400,
2443   NEON_SQDMLAL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL_byelement,
2444   NEON_SQDMLSL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL_byelement,
2445   NEON_SQDMULL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL_byelement,
2446   NEON_SQDMULH_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULH_byelement,
2447   NEON_SQRDMULH_byelement_scalar
2448     = NEON_Q | NEONScalar | NEON_SQRDMULH_byelement,
2449   NEON_SQRDMLAH_byelement_scalar
2450     = NEON_Q | NEONScalar | NEON_SQRDMLAH_byelement,
2451   NEON_SQRDMLSH_byelement_scalar
2452     = NEON_Q | NEONScalar | NEON_SQRDMLSH_byelement,
2453   NEON_FMLA_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_H_byelement,
2454   NEON_FMLS_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_H_byelement,
2455   NEON_FMUL_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_H_byelement,
2456   NEON_FMULX_H_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_H_byelement,
2457 
2458   // Floating point instructions.
2459   NEONScalarByIndexedElementFPFixed
2460     = NEONScalarByIndexedElementFixed | 0x00800000,
2461   NEONScalarByIndexedElementFPMask
2462     = NEONScalarByIndexedElementMask | 0x00800000,
2463   NEON_FMLA_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_byelement,
2464   NEON_FMLS_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_byelement,
2465   NEON_FMUL_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_byelement,
2466   NEON_FMULX_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_byelement
2467 };
2468 
2469 // NEON scalar register copy.
2470 enum NEONScalarCopyOp {
2471   NEONScalarCopyFixed = 0x5E000400,
2472   NEONScalarCopyFMask = 0xDFE08400,
2473   NEONScalarCopyMask  = 0xFFE0FC00,
2474   NEON_DUP_ELEMENT_scalar = NEON_Q | NEONScalar | NEON_DUP_ELEMENT
2475 };
2476 
2477 // NEON scalar pairwise instructions.
2478 enum NEONScalarPairwiseOp {
2479   NEONScalarPairwiseFixed = 0x5E300800,
2480   NEONScalarPairwiseFMask = 0xDF3E0C00,
2481   NEONScalarPairwiseMask  = 0xFFB1F800,
2482   NEON_ADDP_scalar      = NEONScalarPairwiseFixed | 0x0081B000,
2483   NEON_FMAXNMP_h_scalar = NEONScalarPairwiseFixed | 0x0000C000,
2484   NEON_FADDP_h_scalar   = NEONScalarPairwiseFixed | 0x0000D000,
2485   NEON_FMAXP_h_scalar   = NEONScalarPairwiseFixed | 0x0000F000,
2486   NEON_FMINNMP_h_scalar = NEONScalarPairwiseFixed | 0x0080C000,
2487   NEON_FMINP_h_scalar   = NEONScalarPairwiseFixed | 0x0080F000,
2488   NEON_FMAXNMP_scalar   = NEONScalarPairwiseFixed | 0x2000C000,
2489   NEON_FMINNMP_scalar   = NEONScalarPairwiseFixed | 0x2080C000,
2490   NEON_FADDP_scalar     = NEONScalarPairwiseFixed | 0x2000D000,
2491   NEON_FMAXP_scalar     = NEONScalarPairwiseFixed | 0x2000F000,
2492   NEON_FMINP_scalar     = NEONScalarPairwiseFixed | 0x2080F000
2493 };
2494 
2495 // NEON scalar shift immediate.
2496 enum NEONScalarShiftImmediateOp {
2497   NEONScalarShiftImmediateFixed = 0x5F000400,
2498   NEONScalarShiftImmediateFMask = 0xDF800400,
2499   NEONScalarShiftImmediateMask  = 0xFF80FC00,
2500   NEON_SHL_scalar  =       NEON_Q | NEONScalar | NEON_SHL,
2501   NEON_SLI_scalar  =       NEON_Q | NEONScalar | NEON_SLI,
2502   NEON_SRI_scalar  =       NEON_Q | NEONScalar | NEON_SRI,
2503   NEON_SSHR_scalar =       NEON_Q | NEONScalar | NEON_SSHR,
2504   NEON_USHR_scalar =       NEON_Q | NEONScalar | NEON_USHR,
2505   NEON_SRSHR_scalar =      NEON_Q | NEONScalar | NEON_SRSHR,
2506   NEON_URSHR_scalar =      NEON_Q | NEONScalar | NEON_URSHR,
2507   NEON_SSRA_scalar =       NEON_Q | NEONScalar | NEON_SSRA,
2508   NEON_USRA_scalar =       NEON_Q | NEONScalar | NEON_USRA,
2509   NEON_SRSRA_scalar =      NEON_Q | NEONScalar | NEON_SRSRA,
2510   NEON_URSRA_scalar =      NEON_Q | NEONScalar | NEON_URSRA,
2511   NEON_UQSHRN_scalar =     NEON_Q | NEONScalar | NEON_UQSHRN,
2512   NEON_UQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_UQRSHRN,
2513   NEON_SQSHRN_scalar =     NEON_Q | NEONScalar | NEON_SQSHRN,
2514   NEON_SQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_SQRSHRN,
2515   NEON_SQSHRUN_scalar =    NEON_Q | NEONScalar | NEON_SQSHRUN,
2516   NEON_SQRSHRUN_scalar =   NEON_Q | NEONScalar | NEON_SQRSHRUN,
2517   NEON_SQSHLU_scalar =     NEON_Q | NEONScalar | NEON_SQSHLU,
2518   NEON_SQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_SQSHL_imm,
2519   NEON_UQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_UQSHL_imm,
2520   NEON_SCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_SCVTF_imm,
2521   NEON_UCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_UCVTF_imm,
2522   NEON_FCVTZS_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZS_imm,
2523   NEON_FCVTZU_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZU_imm
2524 };
2525 
2526 // Unimplemented and unallocated instructions. These are defined to make fixed
2527 // bit assertion easier.
2528 enum UnimplementedOp {
2529   UnimplementedFixed = 0x00000000,
2530   UnimplementedFMask = 0x00000000
2531 };
2532 
2533 enum UnallocatedOp {
2534   UnallocatedFixed = 0x00000000,
2535   UnallocatedFMask = 0x00000000
2536 };
2537 
2538 // Re-enable `clang-format` after the `enum`s.
2539 // clang-format on
2540 
2541 }  // namespace aarch64
2542 }  // namespace vixl
2543 
2544 #endif  // VIXL_AARCH64_CONSTANTS_AARCH64_H_
2545