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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 Modified Immediate fields */                                         \
162 V_(ImmNEONabc, 18, 16, ExtractBits)                                          \
163 V_(ImmNEONdefgh, 9, 5, ExtractBits)                                          \
164 V_(NEONModImmOp, 29, 29, ExtractBits)                                        \
165 V_(NEONCmode, 15, 12, ExtractBits)                                           \
166                                                                              \
167 /* NEON Shift Immediate fields */                                            \
168 V_(ImmNEONImmhImmb, 22, 16, ExtractBits)                                     \
169 V_(ImmNEONImmh, 22, 19, ExtractBits)                                         \
170 V_(ImmNEONImmb, 18, 16, ExtractBits)
171 // clang-format on
172 
173 #define SYSTEM_REGISTER_FIELDS_LIST(V_, M_) \
174   /* NZCV */                                \
175   V_(Flags, 31, 28, ExtractBits)            \
176   V_(N, 31, 31, ExtractBits)                \
177   V_(Z, 30, 30, ExtractBits)                \
178   V_(C, 29, 29, ExtractBits)                \
179   V_(V, 28, 28, ExtractBits)                \
180   M_(NZCV, Flags_mask)                      \
181   /* FPCR */                                \
182   V_(AHP, 26, 26, ExtractBits)              \
183   V_(DN, 25, 25, ExtractBits)               \
184   V_(FZ, 24, 24, ExtractBits)               \
185   V_(RMode, 23, 22, ExtractBits)            \
186   M_(FPCR, AHP_mask | DN_mask | FZ_mask | RMode_mask)
187 
188 // Fields offsets.
189 #define DECLARE_FIELDS_OFFSETS(Name, HighBit, LowBit, X) \
190   const int Name##_offset = LowBit;                      \
191   const int Name##_width = HighBit - LowBit + 1;         \
192   const uint32_t Name##_mask = ((1 << Name##_width) - 1) << LowBit;
193 #define NOTHING(A, B)
194 INSTRUCTION_FIELDS_LIST(DECLARE_FIELDS_OFFSETS)
195 SYSTEM_REGISTER_FIELDS_LIST(DECLARE_FIELDS_OFFSETS, NOTHING)
196 #undef NOTHING
197 #undef DECLARE_FIELDS_BITS
198 
199 // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), formed
200 // from ImmPCRelLo and ImmPCRelHi.
201 const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask;
202 
203 // Disable `clang-format` for the `enum`s below. We care about the manual
204 // formatting that `clang-format` would destroy.
205 // clang-format off
206 
207 // Condition codes.
208 enum Condition {
209   eq = 0,   // Z set            Equal.
210   ne = 1,   // Z clear          Not equal.
211   cs = 2,   // C set            Carry set.
212   cc = 3,   // C clear          Carry clear.
213   mi = 4,   // N set            Negative.
214   pl = 5,   // N clear          Positive or zero.
215   vs = 6,   // V set            Overflow.
216   vc = 7,   // V clear          No overflow.
217   hi = 8,   // C set, Z clear   Unsigned higher.
218   ls = 9,   // C clear or Z set Unsigned lower or same.
219   ge = 10,  // N == V           Greater or equal.
220   lt = 11,  // N != V           Less than.
221   gt = 12,  // Z clear, N == V  Greater than.
222   le = 13,  // Z set or N != V  Less then or equal
223   al = 14,  //                  Always.
224   nv = 15,  // Behaves as always/al.
225 
226   // Aliases.
227   hs = cs,  // C set            Unsigned higher or same.
228   lo = cc   // C clear          Unsigned lower.
229 };
230 
InvertCondition(Condition cond)231 inline Condition InvertCondition(Condition cond) {
232   // Conditions al and nv behave identically, as "always true". They can't be
233   // inverted, because there is no "always false" condition.
234   VIXL_ASSERT((cond != al) && (cond != nv));
235   return static_cast<Condition>(cond ^ 1);
236 }
237 
238 enum FPTrapFlags {
239   EnableTrap   = 1,
240   DisableTrap = 0
241 };
242 
243 enum FlagsUpdate {
244   SetFlags   = 1,
245   LeaveFlags = 0
246 };
247 
248 enum StatusFlags {
249   NoFlag    = 0,
250 
251   // Derive the flag combinations from the system register bit descriptions.
252   NFlag     = N_mask,
253   ZFlag     = Z_mask,
254   CFlag     = C_mask,
255   VFlag     = V_mask,
256   NZFlag    = NFlag | ZFlag,
257   NCFlag    = NFlag | CFlag,
258   NVFlag    = NFlag | VFlag,
259   ZCFlag    = ZFlag | CFlag,
260   ZVFlag    = ZFlag | VFlag,
261   CVFlag    = CFlag | VFlag,
262   NZCFlag   = NFlag | ZFlag | CFlag,
263   NZVFlag   = NFlag | ZFlag | VFlag,
264   NCVFlag   = NFlag | CFlag | VFlag,
265   ZCVFlag   = ZFlag | CFlag | VFlag,
266   NZCVFlag  = NFlag | ZFlag | CFlag | VFlag,
267 
268   // Floating-point comparison results.
269   FPEqualFlag       = ZCFlag,
270   FPLessThanFlag    = NFlag,
271   FPGreaterThanFlag = CFlag,
272   FPUnorderedFlag   = CVFlag
273 };
274 
275 enum Shift {
276   NO_SHIFT = -1,
277   LSL = 0x0,
278   LSR = 0x1,
279   ASR = 0x2,
280   ROR = 0x3,
281   MSL = 0x4
282 };
283 
284 enum Extend {
285   NO_EXTEND = -1,
286   UXTB      = 0,
287   UXTH      = 1,
288   UXTW      = 2,
289   UXTX      = 3,
290   SXTB      = 4,
291   SXTH      = 5,
292   SXTW      = 6,
293   SXTX      = 7
294 };
295 
296 enum SystemHint {
297   NOP   = 0,
298   YIELD = 1,
299   WFE   = 2,
300   WFI   = 3,
301   SEV   = 4,
302   SEVL  = 5
303 };
304 
305 enum BarrierDomain {
306   OuterShareable = 0,
307   NonShareable   = 1,
308   InnerShareable = 2,
309   FullSystem     = 3
310 };
311 
312 enum BarrierType {
313   BarrierOther  = 0,
314   BarrierReads  = 1,
315   BarrierWrites = 2,
316   BarrierAll    = 3
317 };
318 
319 enum PrefetchOperation {
320   PLDL1KEEP = 0x00,
321   PLDL1STRM = 0x01,
322   PLDL2KEEP = 0x02,
323   PLDL2STRM = 0x03,
324   PLDL3KEEP = 0x04,
325   PLDL3STRM = 0x05,
326 
327   PLIL1KEEP = 0x08,
328   PLIL1STRM = 0x09,
329   PLIL2KEEP = 0x0a,
330   PLIL2STRM = 0x0b,
331   PLIL3KEEP = 0x0c,
332   PLIL3STRM = 0x0d,
333 
334   PSTL1KEEP = 0x10,
335   PSTL1STRM = 0x11,
336   PSTL2KEEP = 0x12,
337   PSTL2STRM = 0x13,
338   PSTL3KEEP = 0x14,
339   PSTL3STRM = 0x15
340 };
341 
342 template<int op0, int op1, int crn, int crm, int op2>
343 class SystemRegisterEncoder {
344  public:
345   static const uint32_t value =
346       ((op0 << SysO0_offset) |
347        (op1 << SysOp1_offset) |
348        (crn << CRn_offset) |
349        (crm << CRm_offset) |
350        (op2 << SysOp2_offset)) >> ImmSystemRegister_offset;
351 };
352 
353 // System/special register names.
354 // This information is not encoded as one field but as the concatenation of
355 // multiple fields (Op0<0>, Op1, Crn, Crm, Op2).
356 enum SystemRegister {
357   NZCV = SystemRegisterEncoder<3, 3, 4, 2, 0>::value,
358   FPCR = SystemRegisterEncoder<3, 3, 4, 4, 0>::value
359 };
360 
361 enum InstructionCacheOp {
362   IVAU = ((0x3 << SysOp1_offset) |
363           (0x7 << CRn_offset) |
364           (0x5 << CRm_offset) |
365           (0x1 << SysOp2_offset)) >> SysOp_offset
366 };
367 
368 enum DataCacheOp {
369   CVAC  = ((0x3 << SysOp1_offset) |
370            (0x7 << CRn_offset) |
371            (0xa << CRm_offset) |
372            (0x1 << SysOp2_offset)) >> SysOp_offset,
373   CVAU  = ((0x3 << SysOp1_offset) |
374            (0x7 << CRn_offset) |
375            (0xb << CRm_offset) |
376            (0x1 << SysOp2_offset)) >> SysOp_offset,
377   CIVAC = ((0x3 << SysOp1_offset) |
378            (0x7 << CRn_offset) |
379            (0xe << CRm_offset) |
380            (0x1 << SysOp2_offset)) >> SysOp_offset,
381   ZVA   = ((0x3 << SysOp1_offset) |
382            (0x7 << CRn_offset) |
383            (0x4 << CRm_offset) |
384            (0x1 << SysOp2_offset)) >> SysOp_offset
385 };
386 
387 // Instruction enumerations.
388 //
389 // These are the masks that define a class of instructions, and the list of
390 // instructions within each class. Each enumeration has a Fixed, FMask and
391 // Mask value.
392 //
393 // Fixed: The fixed bits in this instruction class.
394 // FMask: The mask used to extract the fixed bits in the class.
395 // Mask:  The mask used to identify the instructions within a class.
396 //
397 // The enumerations can be used like this:
398 //
399 // VIXL_ASSERT(instr->Mask(PCRelAddressingFMask) == PCRelAddressingFixed);
400 // switch(instr->Mask(PCRelAddressingMask)) {
401 //   case ADR:  Format("adr 'Xd, 'AddrPCRelByte"); break;
402 //   case ADRP: Format("adrp 'Xd, 'AddrPCRelPage"); break;
403 //   default:   printf("Unknown instruction\n");
404 // }
405 
406 
407 // Generic fields.
408 enum GenericInstrField {
409   SixtyFourBits        = 0x80000000,
410   ThirtyTwoBits        = 0x00000000,
411   FP32                 = 0x00000000,
412   FP64                 = 0x00400000
413 };
414 
415 enum NEONFormatField {
416   NEONFormatFieldMask   = 0x40C00000,
417   NEON_Q                = 0x40000000,
418   NEON_8B               = 0x00000000,
419   NEON_16B              = NEON_8B | NEON_Q,
420   NEON_4H               = 0x00400000,
421   NEON_8H               = NEON_4H | NEON_Q,
422   NEON_2S               = 0x00800000,
423   NEON_4S               = NEON_2S | NEON_Q,
424   NEON_1D               = 0x00C00000,
425   NEON_2D               = 0x00C00000 | NEON_Q
426 };
427 
428 enum NEONFPFormatField {
429   NEONFPFormatFieldMask = 0x40400000,
430   NEON_FP_2S            = FP32,
431   NEON_FP_4S            = FP32 | NEON_Q,
432   NEON_FP_2D            = FP64 | NEON_Q
433 };
434 
435 enum NEONLSFormatField {
436   NEONLSFormatFieldMask = 0x40000C00,
437   LS_NEON_8B            = 0x00000000,
438   LS_NEON_16B           = LS_NEON_8B | NEON_Q,
439   LS_NEON_4H            = 0x00000400,
440   LS_NEON_8H            = LS_NEON_4H | NEON_Q,
441   LS_NEON_2S            = 0x00000800,
442   LS_NEON_4S            = LS_NEON_2S | NEON_Q,
443   LS_NEON_1D            = 0x00000C00,
444   LS_NEON_2D            = LS_NEON_1D | NEON_Q
445 };
446 
447 enum NEONScalarFormatField {
448   NEONScalarFormatFieldMask = 0x00C00000,
449   NEONScalar                = 0x10000000,
450   NEON_B                    = 0x00000000,
451   NEON_H                    = 0x00400000,
452   NEON_S                    = 0x00800000,
453   NEON_D                    = 0x00C00000
454 };
455 
456 // PC relative addressing.
457 enum PCRelAddressingOp {
458   PCRelAddressingFixed = 0x10000000,
459   PCRelAddressingFMask = 0x1F000000,
460   PCRelAddressingMask  = 0x9F000000,
461   ADR                  = PCRelAddressingFixed | 0x00000000,
462   ADRP                 = PCRelAddressingFixed | 0x80000000
463 };
464 
465 // Add/sub (immediate, shifted and extended.)
466 const int kSFOffset = 31;
467 enum AddSubOp {
468   AddSubOpMask      = 0x60000000,
469   AddSubSetFlagsBit = 0x20000000,
470   ADD               = 0x00000000,
471   ADDS              = ADD | AddSubSetFlagsBit,
472   SUB               = 0x40000000,
473   SUBS              = SUB | AddSubSetFlagsBit
474 };
475 
476 #define ADD_SUB_OP_LIST(V)  \
477   V(ADD),                   \
478   V(ADDS),                  \
479   V(SUB),                   \
480   V(SUBS)
481 
482 enum AddSubImmediateOp {
483   AddSubImmediateFixed = 0x11000000,
484   AddSubImmediateFMask = 0x1F000000,
485   AddSubImmediateMask  = 0xFF000000,
486   #define ADD_SUB_IMMEDIATE(A)           \
487   A##_w_imm = AddSubImmediateFixed | A,  \
488   A##_x_imm = AddSubImmediateFixed | A | SixtyFourBits
489   ADD_SUB_OP_LIST(ADD_SUB_IMMEDIATE)
490   #undef ADD_SUB_IMMEDIATE
491 };
492 
493 enum AddSubShiftedOp {
494   AddSubShiftedFixed   = 0x0B000000,
495   AddSubShiftedFMask   = 0x1F200000,
496   AddSubShiftedMask    = 0xFF200000,
497   #define ADD_SUB_SHIFTED(A)             \
498   A##_w_shift = AddSubShiftedFixed | A,  \
499   A##_x_shift = AddSubShiftedFixed | A | SixtyFourBits
500   ADD_SUB_OP_LIST(ADD_SUB_SHIFTED)
501   #undef ADD_SUB_SHIFTED
502 };
503 
504 enum AddSubExtendedOp {
505   AddSubExtendedFixed  = 0x0B200000,
506   AddSubExtendedFMask  = 0x1F200000,
507   AddSubExtendedMask   = 0xFFE00000,
508   #define ADD_SUB_EXTENDED(A)           \
509   A##_w_ext = AddSubExtendedFixed | A,  \
510   A##_x_ext = AddSubExtendedFixed | A | SixtyFourBits
511   ADD_SUB_OP_LIST(ADD_SUB_EXTENDED)
512   #undef ADD_SUB_EXTENDED
513 };
514 
515 // Add/sub with carry.
516 enum AddSubWithCarryOp {
517   AddSubWithCarryFixed = 0x1A000000,
518   AddSubWithCarryFMask = 0x1FE00000,
519   AddSubWithCarryMask  = 0xFFE0FC00,
520   ADC_w                = AddSubWithCarryFixed | ADD,
521   ADC_x                = AddSubWithCarryFixed | ADD | SixtyFourBits,
522   ADC                  = ADC_w,
523   ADCS_w               = AddSubWithCarryFixed | ADDS,
524   ADCS_x               = AddSubWithCarryFixed | ADDS | SixtyFourBits,
525   SBC_w                = AddSubWithCarryFixed | SUB,
526   SBC_x                = AddSubWithCarryFixed | SUB | SixtyFourBits,
527   SBC                  = SBC_w,
528   SBCS_w               = AddSubWithCarryFixed | SUBS,
529   SBCS_x               = AddSubWithCarryFixed | SUBS | SixtyFourBits
530 };
531 
532 
533 // Logical (immediate and shifted register).
534 enum LogicalOp {
535   LogicalOpMask = 0x60200000,
536   NOT   = 0x00200000,
537   AND   = 0x00000000,
538   BIC   = AND | NOT,
539   ORR   = 0x20000000,
540   ORN   = ORR | NOT,
541   EOR   = 0x40000000,
542   EON   = EOR | NOT,
543   ANDS  = 0x60000000,
544   BICS  = ANDS | NOT
545 };
546 
547 // Logical immediate.
548 enum LogicalImmediateOp {
549   LogicalImmediateFixed = 0x12000000,
550   LogicalImmediateFMask = 0x1F800000,
551   LogicalImmediateMask  = 0xFF800000,
552   AND_w_imm   = LogicalImmediateFixed | AND,
553   AND_x_imm   = LogicalImmediateFixed | AND | SixtyFourBits,
554   ORR_w_imm   = LogicalImmediateFixed | ORR,
555   ORR_x_imm   = LogicalImmediateFixed | ORR | SixtyFourBits,
556   EOR_w_imm   = LogicalImmediateFixed | EOR,
557   EOR_x_imm   = LogicalImmediateFixed | EOR | SixtyFourBits,
558   ANDS_w_imm  = LogicalImmediateFixed | ANDS,
559   ANDS_x_imm  = LogicalImmediateFixed | ANDS | SixtyFourBits
560 };
561 
562 // Logical shifted register.
563 enum LogicalShiftedOp {
564   LogicalShiftedFixed = 0x0A000000,
565   LogicalShiftedFMask = 0x1F000000,
566   LogicalShiftedMask  = 0xFF200000,
567   AND_w               = LogicalShiftedFixed | AND,
568   AND_x               = LogicalShiftedFixed | AND | SixtyFourBits,
569   AND_shift           = AND_w,
570   BIC_w               = LogicalShiftedFixed | BIC,
571   BIC_x               = LogicalShiftedFixed | BIC | SixtyFourBits,
572   BIC_shift           = BIC_w,
573   ORR_w               = LogicalShiftedFixed | ORR,
574   ORR_x               = LogicalShiftedFixed | ORR | SixtyFourBits,
575   ORR_shift           = ORR_w,
576   ORN_w               = LogicalShiftedFixed | ORN,
577   ORN_x               = LogicalShiftedFixed | ORN | SixtyFourBits,
578   ORN_shift           = ORN_w,
579   EOR_w               = LogicalShiftedFixed | EOR,
580   EOR_x               = LogicalShiftedFixed | EOR | SixtyFourBits,
581   EOR_shift           = EOR_w,
582   EON_w               = LogicalShiftedFixed | EON,
583   EON_x               = LogicalShiftedFixed | EON | SixtyFourBits,
584   EON_shift           = EON_w,
585   ANDS_w              = LogicalShiftedFixed | ANDS,
586   ANDS_x              = LogicalShiftedFixed | ANDS | SixtyFourBits,
587   ANDS_shift          = ANDS_w,
588   BICS_w              = LogicalShiftedFixed | BICS,
589   BICS_x              = LogicalShiftedFixed | BICS | SixtyFourBits,
590   BICS_shift          = BICS_w
591 };
592 
593 // Move wide immediate.
594 enum MoveWideImmediateOp {
595   MoveWideImmediateFixed = 0x12800000,
596   MoveWideImmediateFMask = 0x1F800000,
597   MoveWideImmediateMask  = 0xFF800000,
598   MOVN                   = 0x00000000,
599   MOVZ                   = 0x40000000,
600   MOVK                   = 0x60000000,
601   MOVN_w                 = MoveWideImmediateFixed | MOVN,
602   MOVN_x                 = MoveWideImmediateFixed | MOVN | SixtyFourBits,
603   MOVZ_w                 = MoveWideImmediateFixed | MOVZ,
604   MOVZ_x                 = MoveWideImmediateFixed | MOVZ | SixtyFourBits,
605   MOVK_w                 = MoveWideImmediateFixed | MOVK,
606   MOVK_x                 = MoveWideImmediateFixed | MOVK | SixtyFourBits
607 };
608 
609 // Bitfield.
610 const int kBitfieldNOffset = 22;
611 enum BitfieldOp {
612   BitfieldFixed = 0x13000000,
613   BitfieldFMask = 0x1F800000,
614   BitfieldMask  = 0xFF800000,
615   SBFM_w        = BitfieldFixed | 0x00000000,
616   SBFM_x        = BitfieldFixed | 0x80000000,
617   SBFM          = SBFM_w,
618   BFM_w         = BitfieldFixed | 0x20000000,
619   BFM_x         = BitfieldFixed | 0xA0000000,
620   BFM           = BFM_w,
621   UBFM_w        = BitfieldFixed | 0x40000000,
622   UBFM_x        = BitfieldFixed | 0xC0000000,
623   UBFM          = UBFM_w
624   // Bitfield N field.
625 };
626 
627 // Extract.
628 enum ExtractOp {
629   ExtractFixed = 0x13800000,
630   ExtractFMask = 0x1F800000,
631   ExtractMask  = 0xFFA00000,
632   EXTR_w       = ExtractFixed | 0x00000000,
633   EXTR_x       = ExtractFixed | 0x80000000,
634   EXTR         = EXTR_w
635 };
636 
637 // Unconditional branch.
638 enum UnconditionalBranchOp {
639   UnconditionalBranchFixed = 0x14000000,
640   UnconditionalBranchFMask = 0x7C000000,
641   UnconditionalBranchMask  = 0xFC000000,
642   B                        = UnconditionalBranchFixed | 0x00000000,
643   BL                       = UnconditionalBranchFixed | 0x80000000
644 };
645 
646 // Unconditional branch to register.
647 enum UnconditionalBranchToRegisterOp {
648   UnconditionalBranchToRegisterFixed = 0xD6000000,
649   UnconditionalBranchToRegisterFMask = 0xFE000000,
650   UnconditionalBranchToRegisterMask  = 0xFFFFFC1F,
651   BR      = UnconditionalBranchToRegisterFixed | 0x001F0000,
652   BLR     = UnconditionalBranchToRegisterFixed | 0x003F0000,
653   RET     = UnconditionalBranchToRegisterFixed | 0x005F0000
654 };
655 
656 // Compare and branch.
657 enum CompareBranchOp {
658   CompareBranchFixed = 0x34000000,
659   CompareBranchFMask = 0x7E000000,
660   CompareBranchMask  = 0xFF000000,
661   CBZ_w              = CompareBranchFixed | 0x00000000,
662   CBZ_x              = CompareBranchFixed | 0x80000000,
663   CBZ                = CBZ_w,
664   CBNZ_w             = CompareBranchFixed | 0x01000000,
665   CBNZ_x             = CompareBranchFixed | 0x81000000,
666   CBNZ               = CBNZ_w
667 };
668 
669 // Test and branch.
670 enum TestBranchOp {
671   TestBranchFixed = 0x36000000,
672   TestBranchFMask = 0x7E000000,
673   TestBranchMask  = 0x7F000000,
674   TBZ             = TestBranchFixed | 0x00000000,
675   TBNZ            = TestBranchFixed | 0x01000000
676 };
677 
678 // Conditional branch.
679 enum ConditionalBranchOp {
680   ConditionalBranchFixed = 0x54000000,
681   ConditionalBranchFMask = 0xFE000000,
682   ConditionalBranchMask  = 0xFF000010,
683   B_cond                 = ConditionalBranchFixed | 0x00000000
684 };
685 
686 // System.
687 // System instruction encoding is complicated because some instructions use op
688 // and CR fields to encode parameters. To handle this cleanly, the system
689 // instructions are split into more than one enum.
690 
691 enum SystemOp {
692   SystemFixed = 0xD5000000,
693   SystemFMask = 0xFFC00000
694 };
695 
696 enum SystemSysRegOp {
697   SystemSysRegFixed = 0xD5100000,
698   SystemSysRegFMask = 0xFFD00000,
699   SystemSysRegMask  = 0xFFF00000,
700   MRS               = SystemSysRegFixed | 0x00200000,
701   MSR               = SystemSysRegFixed | 0x00000000
702 };
703 
704 enum SystemHintOp {
705   SystemHintFixed = 0xD503201F,
706   SystemHintFMask = 0xFFFFF01F,
707   SystemHintMask  = 0xFFFFF01F,
708   HINT            = SystemHintFixed | 0x00000000
709 };
710 
711 enum SystemSysOp {
712   SystemSysFixed  = 0xD5080000,
713   SystemSysFMask  = 0xFFF80000,
714   SystemSysMask   = 0xFFF80000,
715   SYS             = SystemSysFixed | 0x00000000
716 };
717 
718 // Exception.
719 enum ExceptionOp {
720   ExceptionFixed = 0xD4000000,
721   ExceptionFMask = 0xFF000000,
722   ExceptionMask  = 0xFFE0001F,
723   HLT            = ExceptionFixed | 0x00400000,
724   BRK            = ExceptionFixed | 0x00200000,
725   SVC            = ExceptionFixed | 0x00000001,
726   HVC            = ExceptionFixed | 0x00000002,
727   SMC            = ExceptionFixed | 0x00000003,
728   DCPS1          = ExceptionFixed | 0x00A00001,
729   DCPS2          = ExceptionFixed | 0x00A00002,
730   DCPS3          = ExceptionFixed | 0x00A00003
731 };
732 
733 enum MemBarrierOp {
734   MemBarrierFixed = 0xD503309F,
735   MemBarrierFMask = 0xFFFFF09F,
736   MemBarrierMask  = 0xFFFFF0FF,
737   DSB             = MemBarrierFixed | 0x00000000,
738   DMB             = MemBarrierFixed | 0x00000020,
739   ISB             = MemBarrierFixed | 0x00000040
740 };
741 
742 enum SystemExclusiveMonitorOp {
743   SystemExclusiveMonitorFixed = 0xD503305F,
744   SystemExclusiveMonitorFMask = 0xFFFFF0FF,
745   SystemExclusiveMonitorMask  = 0xFFFFF0FF,
746   CLREX                       = SystemExclusiveMonitorFixed
747 };
748 
749 // Any load or store.
750 enum LoadStoreAnyOp {
751   LoadStoreAnyFMask = 0x0a000000,
752   LoadStoreAnyFixed = 0x08000000
753 };
754 
755 // Any load pair or store pair.
756 enum LoadStorePairAnyOp {
757   LoadStorePairAnyFMask = 0x3a000000,
758   LoadStorePairAnyFixed = 0x28000000
759 };
760 
761 #define LOAD_STORE_PAIR_OP_LIST(V)  \
762   V(STP, w,   0x00000000),          \
763   V(LDP, w,   0x00400000),          \
764   V(LDPSW, x, 0x40400000),          \
765   V(STP, x,   0x80000000),          \
766   V(LDP, x,   0x80400000),          \
767   V(STP, s,   0x04000000),          \
768   V(LDP, s,   0x04400000),          \
769   V(STP, d,   0x44000000),          \
770   V(LDP, d,   0x44400000),          \
771   V(STP, q,   0x84000000),          \
772   V(LDP, q,   0x84400000)
773 
774 // Load/store pair (post, pre and offset.)
775 enum LoadStorePairOp {
776   LoadStorePairMask = 0xC4400000,
777   LoadStorePairLBit = 1 << 22,
778   #define LOAD_STORE_PAIR(A, B, C) \
779   A##_##B = C
780   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR)
781   #undef LOAD_STORE_PAIR
782 };
783 
784 enum LoadStorePairPostIndexOp {
785   LoadStorePairPostIndexFixed = 0x28800000,
786   LoadStorePairPostIndexFMask = 0x3B800000,
787   LoadStorePairPostIndexMask  = 0xFFC00000,
788   #define LOAD_STORE_PAIR_POST_INDEX(A, B, C)  \
789   A##_##B##_post = LoadStorePairPostIndexFixed | A##_##B
790   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_POST_INDEX)
791   #undef LOAD_STORE_PAIR_POST_INDEX
792 };
793 
794 enum LoadStorePairPreIndexOp {
795   LoadStorePairPreIndexFixed = 0x29800000,
796   LoadStorePairPreIndexFMask = 0x3B800000,
797   LoadStorePairPreIndexMask  = 0xFFC00000,
798   #define LOAD_STORE_PAIR_PRE_INDEX(A, B, C)  \
799   A##_##B##_pre = LoadStorePairPreIndexFixed | A##_##B
800   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_PRE_INDEX)
801   #undef LOAD_STORE_PAIR_PRE_INDEX
802 };
803 
804 enum LoadStorePairOffsetOp {
805   LoadStorePairOffsetFixed = 0x29000000,
806   LoadStorePairOffsetFMask = 0x3B800000,
807   LoadStorePairOffsetMask  = 0xFFC00000,
808   #define LOAD_STORE_PAIR_OFFSET(A, B, C)  \
809   A##_##B##_off = LoadStorePairOffsetFixed | A##_##B
810   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_OFFSET)
811   #undef LOAD_STORE_PAIR_OFFSET
812 };
813 
814 enum LoadStorePairNonTemporalOp {
815   LoadStorePairNonTemporalFixed = 0x28000000,
816   LoadStorePairNonTemporalFMask = 0x3B800000,
817   LoadStorePairNonTemporalMask  = 0xFFC00000,
818   LoadStorePairNonTemporalLBit = 1 << 22,
819   STNP_w = LoadStorePairNonTemporalFixed | STP_w,
820   LDNP_w = LoadStorePairNonTemporalFixed | LDP_w,
821   STNP_x = LoadStorePairNonTemporalFixed | STP_x,
822   LDNP_x = LoadStorePairNonTemporalFixed | LDP_x,
823   STNP_s = LoadStorePairNonTemporalFixed | STP_s,
824   LDNP_s = LoadStorePairNonTemporalFixed | LDP_s,
825   STNP_d = LoadStorePairNonTemporalFixed | STP_d,
826   LDNP_d = LoadStorePairNonTemporalFixed | LDP_d,
827   STNP_q = LoadStorePairNonTemporalFixed | STP_q,
828   LDNP_q = LoadStorePairNonTemporalFixed | LDP_q
829 };
830 
831 // Load literal.
832 enum LoadLiteralOp {
833   LoadLiteralFixed = 0x18000000,
834   LoadLiteralFMask = 0x3B000000,
835   LoadLiteralMask  = 0xFF000000,
836   LDR_w_lit        = LoadLiteralFixed | 0x00000000,
837   LDR_x_lit        = LoadLiteralFixed | 0x40000000,
838   LDRSW_x_lit      = LoadLiteralFixed | 0x80000000,
839   PRFM_lit         = LoadLiteralFixed | 0xC0000000,
840   LDR_s_lit        = LoadLiteralFixed | 0x04000000,
841   LDR_d_lit        = LoadLiteralFixed | 0x44000000,
842   LDR_q_lit        = LoadLiteralFixed | 0x84000000
843 };
844 
845 #define LOAD_STORE_OP_LIST(V)     \
846   V(ST, RB, w,  0x00000000),  \
847   V(ST, RH, w,  0x40000000),  \
848   V(ST, R, w,   0x80000000),  \
849   V(ST, R, x,   0xC0000000),  \
850   V(LD, RB, w,  0x00400000),  \
851   V(LD, RH, w,  0x40400000),  \
852   V(LD, R, w,   0x80400000),  \
853   V(LD, R, x,   0xC0400000),  \
854   V(LD, RSB, x, 0x00800000),  \
855   V(LD, RSH, x, 0x40800000),  \
856   V(LD, RSW, x, 0x80800000),  \
857   V(LD, RSB, w, 0x00C00000),  \
858   V(LD, RSH, w, 0x40C00000),  \
859   V(ST, R, b,   0x04000000),  \
860   V(ST, R, h,   0x44000000),  \
861   V(ST, R, s,   0x84000000),  \
862   V(ST, R, d,   0xC4000000),  \
863   V(ST, R, q,   0x04800000),  \
864   V(LD, R, b,   0x04400000),  \
865   V(LD, R, h,   0x44400000),  \
866   V(LD, R, s,   0x84400000),  \
867   V(LD, R, d,   0xC4400000),  \
868   V(LD, R, q,   0x04C00000)
869 
870 // Load/store (post, pre, offset and unsigned.)
871 enum LoadStoreOp {
872   LoadStoreMask = 0xC4C00000,
873   LoadStoreVMask = 0x04000000,
874   #define LOAD_STORE(A, B, C, D)  \
875   A##B##_##C = D
876   LOAD_STORE_OP_LIST(LOAD_STORE),
877   #undef LOAD_STORE
878   PRFM = 0xC0800000
879 };
880 
881 // Load/store unscaled offset.
882 enum LoadStoreUnscaledOffsetOp {
883   LoadStoreUnscaledOffsetFixed = 0x38000000,
884   LoadStoreUnscaledOffsetFMask = 0x3B200C00,
885   LoadStoreUnscaledOffsetMask  = 0xFFE00C00,
886   PRFUM                        = LoadStoreUnscaledOffsetFixed | PRFM,
887   #define LOAD_STORE_UNSCALED(A, B, C, D)  \
888   A##U##B##_##C = LoadStoreUnscaledOffsetFixed | D
889   LOAD_STORE_OP_LIST(LOAD_STORE_UNSCALED)
890   #undef LOAD_STORE_UNSCALED
891 };
892 
893 // Load/store post index.
894 enum LoadStorePostIndex {
895   LoadStorePostIndexFixed = 0x38000400,
896   LoadStorePostIndexFMask = 0x3B200C00,
897   LoadStorePostIndexMask  = 0xFFE00C00,
898   #define LOAD_STORE_POST_INDEX(A, B, C, D)  \
899   A##B##_##C##_post = LoadStorePostIndexFixed | D
900   LOAD_STORE_OP_LIST(LOAD_STORE_POST_INDEX)
901   #undef LOAD_STORE_POST_INDEX
902 };
903 
904 // Load/store pre index.
905 enum LoadStorePreIndex {
906   LoadStorePreIndexFixed = 0x38000C00,
907   LoadStorePreIndexFMask = 0x3B200C00,
908   LoadStorePreIndexMask  = 0xFFE00C00,
909   #define LOAD_STORE_PRE_INDEX(A, B, C, D)  \
910   A##B##_##C##_pre = LoadStorePreIndexFixed | D
911   LOAD_STORE_OP_LIST(LOAD_STORE_PRE_INDEX)
912   #undef LOAD_STORE_PRE_INDEX
913 };
914 
915 // Load/store unsigned offset.
916 enum LoadStoreUnsignedOffset {
917   LoadStoreUnsignedOffsetFixed = 0x39000000,
918   LoadStoreUnsignedOffsetFMask = 0x3B000000,
919   LoadStoreUnsignedOffsetMask  = 0xFFC00000,
920   PRFM_unsigned                = LoadStoreUnsignedOffsetFixed | PRFM,
921   #define LOAD_STORE_UNSIGNED_OFFSET(A, B, C, D) \
922   A##B##_##C##_unsigned = LoadStoreUnsignedOffsetFixed | D
923   LOAD_STORE_OP_LIST(LOAD_STORE_UNSIGNED_OFFSET)
924   #undef LOAD_STORE_UNSIGNED_OFFSET
925 };
926 
927 // Load/store register offset.
928 enum LoadStoreRegisterOffset {
929   LoadStoreRegisterOffsetFixed = 0x38200800,
930   LoadStoreRegisterOffsetFMask = 0x3B200C00,
931   LoadStoreRegisterOffsetMask  = 0xFFE00C00,
932   PRFM_reg                     = LoadStoreRegisterOffsetFixed | PRFM,
933   #define LOAD_STORE_REGISTER_OFFSET(A, B, C, D) \
934   A##B##_##C##_reg = LoadStoreRegisterOffsetFixed | D
935   LOAD_STORE_OP_LIST(LOAD_STORE_REGISTER_OFFSET)
936   #undef LOAD_STORE_REGISTER_OFFSET
937 };
938 
939 enum LoadStoreExclusive {
940   LoadStoreExclusiveFixed = 0x08000000,
941   LoadStoreExclusiveFMask = 0x3F000000,
942   LoadStoreExclusiveMask  = 0xFFE08000,
943   STXRB_w  = LoadStoreExclusiveFixed | 0x00000000,
944   STXRH_w  = LoadStoreExclusiveFixed | 0x40000000,
945   STXR_w   = LoadStoreExclusiveFixed | 0x80000000,
946   STXR_x   = LoadStoreExclusiveFixed | 0xC0000000,
947   LDXRB_w  = LoadStoreExclusiveFixed | 0x00400000,
948   LDXRH_w  = LoadStoreExclusiveFixed | 0x40400000,
949   LDXR_w   = LoadStoreExclusiveFixed | 0x80400000,
950   LDXR_x   = LoadStoreExclusiveFixed | 0xC0400000,
951   STXP_w   = LoadStoreExclusiveFixed | 0x80200000,
952   STXP_x   = LoadStoreExclusiveFixed | 0xC0200000,
953   LDXP_w   = LoadStoreExclusiveFixed | 0x80600000,
954   LDXP_x   = LoadStoreExclusiveFixed | 0xC0600000,
955   STLXRB_w = LoadStoreExclusiveFixed | 0x00008000,
956   STLXRH_w = LoadStoreExclusiveFixed | 0x40008000,
957   STLXR_w  = LoadStoreExclusiveFixed | 0x80008000,
958   STLXR_x  = LoadStoreExclusiveFixed | 0xC0008000,
959   LDAXRB_w = LoadStoreExclusiveFixed | 0x00408000,
960   LDAXRH_w = LoadStoreExclusiveFixed | 0x40408000,
961   LDAXR_w  = LoadStoreExclusiveFixed | 0x80408000,
962   LDAXR_x  = LoadStoreExclusiveFixed | 0xC0408000,
963   STLXP_w  = LoadStoreExclusiveFixed | 0x80208000,
964   STLXP_x  = LoadStoreExclusiveFixed | 0xC0208000,
965   LDAXP_w  = LoadStoreExclusiveFixed | 0x80608000,
966   LDAXP_x  = LoadStoreExclusiveFixed | 0xC0608000,
967   STLRB_w  = LoadStoreExclusiveFixed | 0x00808000,
968   STLRH_w  = LoadStoreExclusiveFixed | 0x40808000,
969   STLR_w   = LoadStoreExclusiveFixed | 0x80808000,
970   STLR_x   = LoadStoreExclusiveFixed | 0xC0808000,
971   LDARB_w  = LoadStoreExclusiveFixed | 0x00C08000,
972   LDARH_w  = LoadStoreExclusiveFixed | 0x40C08000,
973   LDAR_w   = LoadStoreExclusiveFixed | 0x80C08000,
974   LDAR_x   = LoadStoreExclusiveFixed | 0xC0C08000
975 };
976 
977 // Conditional compare.
978 enum ConditionalCompareOp {
979   ConditionalCompareMask = 0x60000000,
980   CCMN                   = 0x20000000,
981   CCMP                   = 0x60000000
982 };
983 
984 // Conditional compare register.
985 enum ConditionalCompareRegisterOp {
986   ConditionalCompareRegisterFixed = 0x1A400000,
987   ConditionalCompareRegisterFMask = 0x1FE00800,
988   ConditionalCompareRegisterMask  = 0xFFE00C10,
989   CCMN_w = ConditionalCompareRegisterFixed | CCMN,
990   CCMN_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMN,
991   CCMP_w = ConditionalCompareRegisterFixed | CCMP,
992   CCMP_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMP
993 };
994 
995 // Conditional compare immediate.
996 enum ConditionalCompareImmediateOp {
997   ConditionalCompareImmediateFixed = 0x1A400800,
998   ConditionalCompareImmediateFMask = 0x1FE00800,
999   ConditionalCompareImmediateMask  = 0xFFE00C10,
1000   CCMN_w_imm = ConditionalCompareImmediateFixed | CCMN,
1001   CCMN_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMN,
1002   CCMP_w_imm = ConditionalCompareImmediateFixed | CCMP,
1003   CCMP_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMP
1004 };
1005 
1006 // Conditional select.
1007 enum ConditionalSelectOp {
1008   ConditionalSelectFixed = 0x1A800000,
1009   ConditionalSelectFMask = 0x1FE00000,
1010   ConditionalSelectMask  = 0xFFE00C00,
1011   CSEL_w                 = ConditionalSelectFixed | 0x00000000,
1012   CSEL_x                 = ConditionalSelectFixed | 0x80000000,
1013   CSEL                   = CSEL_w,
1014   CSINC_w                = ConditionalSelectFixed | 0x00000400,
1015   CSINC_x                = ConditionalSelectFixed | 0x80000400,
1016   CSINC                  = CSINC_w,
1017   CSINV_w                = ConditionalSelectFixed | 0x40000000,
1018   CSINV_x                = ConditionalSelectFixed | 0xC0000000,
1019   CSINV                  = CSINV_w,
1020   CSNEG_w                = ConditionalSelectFixed | 0x40000400,
1021   CSNEG_x                = ConditionalSelectFixed | 0xC0000400,
1022   CSNEG                  = CSNEG_w
1023 };
1024 
1025 // Data processing 1 source.
1026 enum DataProcessing1SourceOp {
1027   DataProcessing1SourceFixed = 0x5AC00000,
1028   DataProcessing1SourceFMask = 0x5FE00000,
1029   DataProcessing1SourceMask  = 0xFFFFFC00,
1030   RBIT    = DataProcessing1SourceFixed | 0x00000000,
1031   RBIT_w  = RBIT,
1032   RBIT_x  = RBIT | SixtyFourBits,
1033   REV16   = DataProcessing1SourceFixed | 0x00000400,
1034   REV16_w = REV16,
1035   REV16_x = REV16 | SixtyFourBits,
1036   REV     = DataProcessing1SourceFixed | 0x00000800,
1037   REV_w   = REV,
1038   REV32_x = REV | SixtyFourBits,
1039   REV_x   = DataProcessing1SourceFixed | SixtyFourBits | 0x00000C00,
1040   CLZ     = DataProcessing1SourceFixed | 0x00001000,
1041   CLZ_w   = CLZ,
1042   CLZ_x   = CLZ | SixtyFourBits,
1043   CLS     = DataProcessing1SourceFixed | 0x00001400,
1044   CLS_w   = CLS,
1045   CLS_x   = CLS | SixtyFourBits
1046 };
1047 
1048 // Data processing 2 source.
1049 enum DataProcessing2SourceOp {
1050   DataProcessing2SourceFixed = 0x1AC00000,
1051   DataProcessing2SourceFMask = 0x5FE00000,
1052   DataProcessing2SourceMask  = 0xFFE0FC00,
1053   UDIV_w  = DataProcessing2SourceFixed | 0x00000800,
1054   UDIV_x  = DataProcessing2SourceFixed | 0x80000800,
1055   UDIV    = UDIV_w,
1056   SDIV_w  = DataProcessing2SourceFixed | 0x00000C00,
1057   SDIV_x  = DataProcessing2SourceFixed | 0x80000C00,
1058   SDIV    = SDIV_w,
1059   LSLV_w  = DataProcessing2SourceFixed | 0x00002000,
1060   LSLV_x  = DataProcessing2SourceFixed | 0x80002000,
1061   LSLV    = LSLV_w,
1062   LSRV_w  = DataProcessing2SourceFixed | 0x00002400,
1063   LSRV_x  = DataProcessing2SourceFixed | 0x80002400,
1064   LSRV    = LSRV_w,
1065   ASRV_w  = DataProcessing2SourceFixed | 0x00002800,
1066   ASRV_x  = DataProcessing2SourceFixed | 0x80002800,
1067   ASRV    = ASRV_w,
1068   RORV_w  = DataProcessing2SourceFixed | 0x00002C00,
1069   RORV_x  = DataProcessing2SourceFixed | 0x80002C00,
1070   RORV    = RORV_w,
1071   CRC32B  = DataProcessing2SourceFixed | 0x00004000,
1072   CRC32H  = DataProcessing2SourceFixed | 0x00004400,
1073   CRC32W  = DataProcessing2SourceFixed | 0x00004800,
1074   CRC32X  = DataProcessing2SourceFixed | SixtyFourBits | 0x00004C00,
1075   CRC32CB = DataProcessing2SourceFixed | 0x00005000,
1076   CRC32CH = DataProcessing2SourceFixed | 0x00005400,
1077   CRC32CW = DataProcessing2SourceFixed | 0x00005800,
1078   CRC32CX = DataProcessing2SourceFixed | SixtyFourBits | 0x00005C00
1079 };
1080 
1081 // Data processing 3 source.
1082 enum DataProcessing3SourceOp {
1083   DataProcessing3SourceFixed = 0x1B000000,
1084   DataProcessing3SourceFMask = 0x1F000000,
1085   DataProcessing3SourceMask  = 0xFFE08000,
1086   MADD_w                     = DataProcessing3SourceFixed | 0x00000000,
1087   MADD_x                     = DataProcessing3SourceFixed | 0x80000000,
1088   MADD                       = MADD_w,
1089   MSUB_w                     = DataProcessing3SourceFixed | 0x00008000,
1090   MSUB_x                     = DataProcessing3SourceFixed | 0x80008000,
1091   MSUB                       = MSUB_w,
1092   SMADDL_x                   = DataProcessing3SourceFixed | 0x80200000,
1093   SMSUBL_x                   = DataProcessing3SourceFixed | 0x80208000,
1094   SMULH_x                    = DataProcessing3SourceFixed | 0x80400000,
1095   UMADDL_x                   = DataProcessing3SourceFixed | 0x80A00000,
1096   UMSUBL_x                   = DataProcessing3SourceFixed | 0x80A08000,
1097   UMULH_x                    = DataProcessing3SourceFixed | 0x80C00000
1098 };
1099 
1100 // Floating point compare.
1101 enum FPCompareOp {
1102   FPCompareFixed = 0x1E202000,
1103   FPCompareFMask = 0x5F203C00,
1104   FPCompareMask  = 0xFFE0FC1F,
1105   FCMP_s         = FPCompareFixed | 0x00000000,
1106   FCMP_d         = FPCompareFixed | FP64 | 0x00000000,
1107   FCMP           = FCMP_s,
1108   FCMP_s_zero    = FPCompareFixed | 0x00000008,
1109   FCMP_d_zero    = FPCompareFixed | FP64 | 0x00000008,
1110   FCMP_zero      = FCMP_s_zero,
1111   FCMPE_s        = FPCompareFixed | 0x00000010,
1112   FCMPE_d        = FPCompareFixed | FP64 | 0x00000010,
1113   FCMPE          = FCMPE_s,
1114   FCMPE_s_zero   = FPCompareFixed | 0x00000018,
1115   FCMPE_d_zero   = FPCompareFixed | FP64 | 0x00000018,
1116   FCMPE_zero     = FCMPE_s_zero
1117 };
1118 
1119 // Floating point conditional compare.
1120 enum FPConditionalCompareOp {
1121   FPConditionalCompareFixed = 0x1E200400,
1122   FPConditionalCompareFMask = 0x5F200C00,
1123   FPConditionalCompareMask  = 0xFFE00C10,
1124   FCCMP_s                   = FPConditionalCompareFixed | 0x00000000,
1125   FCCMP_d                   = FPConditionalCompareFixed | FP64 | 0x00000000,
1126   FCCMP                     = FCCMP_s,
1127   FCCMPE_s                  = FPConditionalCompareFixed | 0x00000010,
1128   FCCMPE_d                  = FPConditionalCompareFixed | FP64 | 0x00000010,
1129   FCCMPE                    = FCCMPE_s
1130 };
1131 
1132 // Floating point conditional select.
1133 enum FPConditionalSelectOp {
1134   FPConditionalSelectFixed = 0x1E200C00,
1135   FPConditionalSelectFMask = 0x5F200C00,
1136   FPConditionalSelectMask  = 0xFFE00C00,
1137   FCSEL_s                  = FPConditionalSelectFixed | 0x00000000,
1138   FCSEL_d                  = FPConditionalSelectFixed | FP64 | 0x00000000,
1139   FCSEL                    = FCSEL_s
1140 };
1141 
1142 // Floating point immediate.
1143 enum FPImmediateOp {
1144   FPImmediateFixed = 0x1E201000,
1145   FPImmediateFMask = 0x5F201C00,
1146   FPImmediateMask  = 0xFFE01C00,
1147   FMOV_s_imm       = FPImmediateFixed | 0x00000000,
1148   FMOV_d_imm       = FPImmediateFixed | FP64 | 0x00000000
1149 };
1150 
1151 // Floating point data processing 1 source.
1152 enum FPDataProcessing1SourceOp {
1153   FPDataProcessing1SourceFixed = 0x1E204000,
1154   FPDataProcessing1SourceFMask = 0x5F207C00,
1155   FPDataProcessing1SourceMask  = 0xFFFFFC00,
1156   FMOV_s   = FPDataProcessing1SourceFixed | 0x00000000,
1157   FMOV_d   = FPDataProcessing1SourceFixed | FP64 | 0x00000000,
1158   FMOV     = FMOV_s,
1159   FABS_s   = FPDataProcessing1SourceFixed | 0x00008000,
1160   FABS_d   = FPDataProcessing1SourceFixed | FP64 | 0x00008000,
1161   FABS     = FABS_s,
1162   FNEG_s   = FPDataProcessing1SourceFixed | 0x00010000,
1163   FNEG_d   = FPDataProcessing1SourceFixed | FP64 | 0x00010000,
1164   FNEG     = FNEG_s,
1165   FSQRT_s  = FPDataProcessing1SourceFixed | 0x00018000,
1166   FSQRT_d  = FPDataProcessing1SourceFixed | FP64 | 0x00018000,
1167   FSQRT    = FSQRT_s,
1168   FCVT_ds  = FPDataProcessing1SourceFixed | 0x00028000,
1169   FCVT_sd  = FPDataProcessing1SourceFixed | FP64 | 0x00020000,
1170   FCVT_hs  = FPDataProcessing1SourceFixed | 0x00038000,
1171   FCVT_hd  = FPDataProcessing1SourceFixed | FP64 | 0x00038000,
1172   FCVT_sh  = FPDataProcessing1SourceFixed | 0x00C20000,
1173   FCVT_dh  = FPDataProcessing1SourceFixed | 0x00C28000,
1174   FRINTN_s = FPDataProcessing1SourceFixed | 0x00040000,
1175   FRINTN_d = FPDataProcessing1SourceFixed | FP64 | 0x00040000,
1176   FRINTN   = FRINTN_s,
1177   FRINTP_s = FPDataProcessing1SourceFixed | 0x00048000,
1178   FRINTP_d = FPDataProcessing1SourceFixed | FP64 | 0x00048000,
1179   FRINTP   = FRINTP_s,
1180   FRINTM_s = FPDataProcessing1SourceFixed | 0x00050000,
1181   FRINTM_d = FPDataProcessing1SourceFixed | FP64 | 0x00050000,
1182   FRINTM   = FRINTM_s,
1183   FRINTZ_s = FPDataProcessing1SourceFixed | 0x00058000,
1184   FRINTZ_d = FPDataProcessing1SourceFixed | FP64 | 0x00058000,
1185   FRINTZ   = FRINTZ_s,
1186   FRINTA_s = FPDataProcessing1SourceFixed | 0x00060000,
1187   FRINTA_d = FPDataProcessing1SourceFixed | FP64 | 0x00060000,
1188   FRINTA   = FRINTA_s,
1189   FRINTX_s = FPDataProcessing1SourceFixed | 0x00070000,
1190   FRINTX_d = FPDataProcessing1SourceFixed | FP64 | 0x00070000,
1191   FRINTX   = FRINTX_s,
1192   FRINTI_s = FPDataProcessing1SourceFixed | 0x00078000,
1193   FRINTI_d = FPDataProcessing1SourceFixed | FP64 | 0x00078000,
1194   FRINTI   = FRINTI_s
1195 };
1196 
1197 // Floating point data processing 2 source.
1198 enum FPDataProcessing2SourceOp {
1199   FPDataProcessing2SourceFixed = 0x1E200800,
1200   FPDataProcessing2SourceFMask = 0x5F200C00,
1201   FPDataProcessing2SourceMask  = 0xFFE0FC00,
1202   FMUL     = FPDataProcessing2SourceFixed | 0x00000000,
1203   FMUL_s   = FMUL,
1204   FMUL_d   = FMUL | FP64,
1205   FDIV     = FPDataProcessing2SourceFixed | 0x00001000,
1206   FDIV_s   = FDIV,
1207   FDIV_d   = FDIV | FP64,
1208   FADD     = FPDataProcessing2SourceFixed | 0x00002000,
1209   FADD_s   = FADD,
1210   FADD_d   = FADD | FP64,
1211   FSUB     = FPDataProcessing2SourceFixed | 0x00003000,
1212   FSUB_s   = FSUB,
1213   FSUB_d   = FSUB | FP64,
1214   FMAX     = FPDataProcessing2SourceFixed | 0x00004000,
1215   FMAX_s   = FMAX,
1216   FMAX_d   = FMAX | FP64,
1217   FMIN     = FPDataProcessing2SourceFixed | 0x00005000,
1218   FMIN_s   = FMIN,
1219   FMIN_d   = FMIN | FP64,
1220   FMAXNM   = FPDataProcessing2SourceFixed | 0x00006000,
1221   FMAXNM_s = FMAXNM,
1222   FMAXNM_d = FMAXNM | FP64,
1223   FMINNM   = FPDataProcessing2SourceFixed | 0x00007000,
1224   FMINNM_s = FMINNM,
1225   FMINNM_d = FMINNM | FP64,
1226   FNMUL    = FPDataProcessing2SourceFixed | 0x00008000,
1227   FNMUL_s  = FNMUL,
1228   FNMUL_d  = FNMUL | FP64
1229 };
1230 
1231 // Floating point data processing 3 source.
1232 enum FPDataProcessing3SourceOp {
1233   FPDataProcessing3SourceFixed = 0x1F000000,
1234   FPDataProcessing3SourceFMask = 0x5F000000,
1235   FPDataProcessing3SourceMask  = 0xFFE08000,
1236   FMADD_s                      = FPDataProcessing3SourceFixed | 0x00000000,
1237   FMSUB_s                      = FPDataProcessing3SourceFixed | 0x00008000,
1238   FNMADD_s                     = FPDataProcessing3SourceFixed | 0x00200000,
1239   FNMSUB_s                     = FPDataProcessing3SourceFixed | 0x00208000,
1240   FMADD_d                      = FPDataProcessing3SourceFixed | 0x00400000,
1241   FMSUB_d                      = FPDataProcessing3SourceFixed | 0x00408000,
1242   FNMADD_d                     = FPDataProcessing3SourceFixed | 0x00600000,
1243   FNMSUB_d                     = FPDataProcessing3SourceFixed | 0x00608000
1244 };
1245 
1246 // Conversion between floating point and integer.
1247 enum FPIntegerConvertOp {
1248   FPIntegerConvertFixed = 0x1E200000,
1249   FPIntegerConvertFMask = 0x5F20FC00,
1250   FPIntegerConvertMask  = 0xFFFFFC00,
1251   FCVTNS    = FPIntegerConvertFixed | 0x00000000,
1252   FCVTNS_ws = FCVTNS,
1253   FCVTNS_xs = FCVTNS | SixtyFourBits,
1254   FCVTNS_wd = FCVTNS | FP64,
1255   FCVTNS_xd = FCVTNS | SixtyFourBits | FP64,
1256   FCVTNU    = FPIntegerConvertFixed | 0x00010000,
1257   FCVTNU_ws = FCVTNU,
1258   FCVTNU_xs = FCVTNU | SixtyFourBits,
1259   FCVTNU_wd = FCVTNU | FP64,
1260   FCVTNU_xd = FCVTNU | SixtyFourBits | FP64,
1261   FCVTPS    = FPIntegerConvertFixed | 0x00080000,
1262   FCVTPS_ws = FCVTPS,
1263   FCVTPS_xs = FCVTPS | SixtyFourBits,
1264   FCVTPS_wd = FCVTPS | FP64,
1265   FCVTPS_xd = FCVTPS | SixtyFourBits | FP64,
1266   FCVTPU    = FPIntegerConvertFixed | 0x00090000,
1267   FCVTPU_ws = FCVTPU,
1268   FCVTPU_xs = FCVTPU | SixtyFourBits,
1269   FCVTPU_wd = FCVTPU | FP64,
1270   FCVTPU_xd = FCVTPU | SixtyFourBits | FP64,
1271   FCVTMS    = FPIntegerConvertFixed | 0x00100000,
1272   FCVTMS_ws = FCVTMS,
1273   FCVTMS_xs = FCVTMS | SixtyFourBits,
1274   FCVTMS_wd = FCVTMS | FP64,
1275   FCVTMS_xd = FCVTMS | SixtyFourBits | FP64,
1276   FCVTMU    = FPIntegerConvertFixed | 0x00110000,
1277   FCVTMU_ws = FCVTMU,
1278   FCVTMU_xs = FCVTMU | SixtyFourBits,
1279   FCVTMU_wd = FCVTMU | FP64,
1280   FCVTMU_xd = FCVTMU | SixtyFourBits | FP64,
1281   FCVTZS    = FPIntegerConvertFixed | 0x00180000,
1282   FCVTZS_ws = FCVTZS,
1283   FCVTZS_xs = FCVTZS | SixtyFourBits,
1284   FCVTZS_wd = FCVTZS | FP64,
1285   FCVTZS_xd = FCVTZS | SixtyFourBits | FP64,
1286   FCVTZU    = FPIntegerConvertFixed | 0x00190000,
1287   FCVTZU_ws = FCVTZU,
1288   FCVTZU_xs = FCVTZU | SixtyFourBits,
1289   FCVTZU_wd = FCVTZU | FP64,
1290   FCVTZU_xd = FCVTZU | SixtyFourBits | FP64,
1291   SCVTF     = FPIntegerConvertFixed | 0x00020000,
1292   SCVTF_sw  = SCVTF,
1293   SCVTF_sx  = SCVTF | SixtyFourBits,
1294   SCVTF_dw  = SCVTF | FP64,
1295   SCVTF_dx  = SCVTF | SixtyFourBits | FP64,
1296   UCVTF     = FPIntegerConvertFixed | 0x00030000,
1297   UCVTF_sw  = UCVTF,
1298   UCVTF_sx  = UCVTF | SixtyFourBits,
1299   UCVTF_dw  = UCVTF | FP64,
1300   UCVTF_dx  = UCVTF | SixtyFourBits | FP64,
1301   FCVTAS    = FPIntegerConvertFixed | 0x00040000,
1302   FCVTAS_ws = FCVTAS,
1303   FCVTAS_xs = FCVTAS | SixtyFourBits,
1304   FCVTAS_wd = FCVTAS | FP64,
1305   FCVTAS_xd = FCVTAS | SixtyFourBits | FP64,
1306   FCVTAU    = FPIntegerConvertFixed | 0x00050000,
1307   FCVTAU_ws = FCVTAU,
1308   FCVTAU_xs = FCVTAU | SixtyFourBits,
1309   FCVTAU_wd = FCVTAU | FP64,
1310   FCVTAU_xd = FCVTAU | SixtyFourBits | FP64,
1311   FMOV_ws   = FPIntegerConvertFixed | 0x00060000,
1312   FMOV_sw   = FPIntegerConvertFixed | 0x00070000,
1313   FMOV_xd   = FMOV_ws | SixtyFourBits | FP64,
1314   FMOV_dx   = FMOV_sw | SixtyFourBits | FP64,
1315   FMOV_d1_x = FPIntegerConvertFixed | SixtyFourBits | 0x008F0000,
1316   FMOV_x_d1 = FPIntegerConvertFixed | SixtyFourBits | 0x008E0000
1317 };
1318 
1319 // Conversion between fixed point and floating point.
1320 enum FPFixedPointConvertOp {
1321   FPFixedPointConvertFixed = 0x1E000000,
1322   FPFixedPointConvertFMask = 0x5F200000,
1323   FPFixedPointConvertMask  = 0xFFFF0000,
1324   FCVTZS_fixed    = FPFixedPointConvertFixed | 0x00180000,
1325   FCVTZS_ws_fixed = FCVTZS_fixed,
1326   FCVTZS_xs_fixed = FCVTZS_fixed | SixtyFourBits,
1327   FCVTZS_wd_fixed = FCVTZS_fixed | FP64,
1328   FCVTZS_xd_fixed = FCVTZS_fixed | SixtyFourBits | FP64,
1329   FCVTZU_fixed    = FPFixedPointConvertFixed | 0x00190000,
1330   FCVTZU_ws_fixed = FCVTZU_fixed,
1331   FCVTZU_xs_fixed = FCVTZU_fixed | SixtyFourBits,
1332   FCVTZU_wd_fixed = FCVTZU_fixed | FP64,
1333   FCVTZU_xd_fixed = FCVTZU_fixed | SixtyFourBits | FP64,
1334   SCVTF_fixed     = FPFixedPointConvertFixed | 0x00020000,
1335   SCVTF_sw_fixed  = SCVTF_fixed,
1336   SCVTF_sx_fixed  = SCVTF_fixed | SixtyFourBits,
1337   SCVTF_dw_fixed  = SCVTF_fixed | FP64,
1338   SCVTF_dx_fixed  = SCVTF_fixed | SixtyFourBits | FP64,
1339   UCVTF_fixed     = FPFixedPointConvertFixed | 0x00030000,
1340   UCVTF_sw_fixed  = UCVTF_fixed,
1341   UCVTF_sx_fixed  = UCVTF_fixed | SixtyFourBits,
1342   UCVTF_dw_fixed  = UCVTF_fixed | FP64,
1343   UCVTF_dx_fixed  = UCVTF_fixed | SixtyFourBits | FP64
1344 };
1345 
1346 // Crypto - two register SHA.
1347 enum Crypto2RegSHAOp {
1348   Crypto2RegSHAFixed = 0x5E280800,
1349   Crypto2RegSHAFMask = 0xFF3E0C00
1350 };
1351 
1352 // Crypto - three register SHA.
1353 enum Crypto3RegSHAOp {
1354   Crypto3RegSHAFixed = 0x5E000000,
1355   Crypto3RegSHAFMask = 0xFF208C00
1356 };
1357 
1358 // Crypto - AES.
1359 enum CryptoAESOp {
1360   CryptoAESFixed = 0x4E280800,
1361   CryptoAESFMask = 0xFF3E0C00
1362 };
1363 
1364 // NEON instructions with two register operands.
1365 enum NEON2RegMiscOp {
1366   NEON2RegMiscFixed = 0x0E200800,
1367   NEON2RegMiscFMask = 0x9F3E0C00,
1368   NEON2RegMiscMask  = 0xBF3FFC00,
1369   NEON2RegMiscUBit  = 0x20000000,
1370   NEON_REV64     = NEON2RegMiscFixed | 0x00000000,
1371   NEON_REV32     = NEON2RegMiscFixed | 0x20000000,
1372   NEON_REV16     = NEON2RegMiscFixed | 0x00001000,
1373   NEON_SADDLP    = NEON2RegMiscFixed | 0x00002000,
1374   NEON_UADDLP    = NEON_SADDLP | NEON2RegMiscUBit,
1375   NEON_SUQADD    = NEON2RegMiscFixed | 0x00003000,
1376   NEON_USQADD    = NEON_SUQADD | NEON2RegMiscUBit,
1377   NEON_CLS       = NEON2RegMiscFixed | 0x00004000,
1378   NEON_CLZ       = NEON2RegMiscFixed | 0x20004000,
1379   NEON_CNT       = NEON2RegMiscFixed | 0x00005000,
1380   NEON_RBIT_NOT  = NEON2RegMiscFixed | 0x20005000,
1381   NEON_SADALP    = NEON2RegMiscFixed | 0x00006000,
1382   NEON_UADALP    = NEON_SADALP | NEON2RegMiscUBit,
1383   NEON_SQABS     = NEON2RegMiscFixed | 0x00007000,
1384   NEON_SQNEG     = NEON2RegMiscFixed | 0x20007000,
1385   NEON_CMGT_zero = NEON2RegMiscFixed | 0x00008000,
1386   NEON_CMGE_zero = NEON2RegMiscFixed | 0x20008000,
1387   NEON_CMEQ_zero = NEON2RegMiscFixed | 0x00009000,
1388   NEON_CMLE_zero = NEON2RegMiscFixed | 0x20009000,
1389   NEON_CMLT_zero = NEON2RegMiscFixed | 0x0000A000,
1390   NEON_ABS       = NEON2RegMiscFixed | 0x0000B000,
1391   NEON_NEG       = NEON2RegMiscFixed | 0x2000B000,
1392   NEON_XTN       = NEON2RegMiscFixed | 0x00012000,
1393   NEON_SQXTUN    = NEON2RegMiscFixed | 0x20012000,
1394   NEON_SHLL      = NEON2RegMiscFixed | 0x20013000,
1395   NEON_SQXTN     = NEON2RegMiscFixed | 0x00014000,
1396   NEON_UQXTN     = NEON_SQXTN | NEON2RegMiscUBit,
1397 
1398   NEON2RegMiscOpcode = 0x0001F000,
1399   NEON_RBIT_NOT_opcode = NEON_RBIT_NOT & NEON2RegMiscOpcode,
1400   NEON_NEG_opcode = NEON_NEG & NEON2RegMiscOpcode,
1401   NEON_XTN_opcode = NEON_XTN & NEON2RegMiscOpcode,
1402   NEON_UQXTN_opcode = NEON_UQXTN & NEON2RegMiscOpcode,
1403 
1404   // These instructions use only one bit of the size field. The other bit is
1405   // used to distinguish between instructions.
1406   NEON2RegMiscFPMask = NEON2RegMiscMask | 0x00800000,
1407   NEON_FABS   = NEON2RegMiscFixed | 0x0080F000,
1408   NEON_FNEG   = NEON2RegMiscFixed | 0x2080F000,
1409   NEON_FCVTN  = NEON2RegMiscFixed | 0x00016000,
1410   NEON_FCVTXN = NEON2RegMiscFixed | 0x20016000,
1411   NEON_FCVTL  = NEON2RegMiscFixed | 0x00017000,
1412   NEON_FRINTN = NEON2RegMiscFixed | 0x00018000,
1413   NEON_FRINTA = NEON2RegMiscFixed | 0x20018000,
1414   NEON_FRINTP = NEON2RegMiscFixed | 0x00818000,
1415   NEON_FRINTM = NEON2RegMiscFixed | 0x00019000,
1416   NEON_FRINTX = NEON2RegMiscFixed | 0x20019000,
1417   NEON_FRINTZ = NEON2RegMiscFixed | 0x00819000,
1418   NEON_FRINTI = NEON2RegMiscFixed | 0x20819000,
1419   NEON_FCVTNS = NEON2RegMiscFixed | 0x0001A000,
1420   NEON_FCVTNU = NEON_FCVTNS | NEON2RegMiscUBit,
1421   NEON_FCVTPS = NEON2RegMiscFixed | 0x0081A000,
1422   NEON_FCVTPU = NEON_FCVTPS | NEON2RegMiscUBit,
1423   NEON_FCVTMS = NEON2RegMiscFixed | 0x0001B000,
1424   NEON_FCVTMU = NEON_FCVTMS | NEON2RegMiscUBit,
1425   NEON_FCVTZS = NEON2RegMiscFixed | 0x0081B000,
1426   NEON_FCVTZU = NEON_FCVTZS | NEON2RegMiscUBit,
1427   NEON_FCVTAS = NEON2RegMiscFixed | 0x0001C000,
1428   NEON_FCVTAU = NEON_FCVTAS | NEON2RegMiscUBit,
1429   NEON_FSQRT  = NEON2RegMiscFixed | 0x2081F000,
1430   NEON_SCVTF  = NEON2RegMiscFixed | 0x0001D000,
1431   NEON_UCVTF  = NEON_SCVTF | NEON2RegMiscUBit,
1432   NEON_URSQRTE = NEON2RegMiscFixed | 0x2081C000,
1433   NEON_URECPE  = NEON2RegMiscFixed | 0x0081C000,
1434   NEON_FRSQRTE = NEON2RegMiscFixed | 0x2081D000,
1435   NEON_FRECPE  = NEON2RegMiscFixed | 0x0081D000,
1436   NEON_FCMGT_zero = NEON2RegMiscFixed | 0x0080C000,
1437   NEON_FCMGE_zero = NEON2RegMiscFixed | 0x2080C000,
1438   NEON_FCMEQ_zero = NEON2RegMiscFixed | 0x0080D000,
1439   NEON_FCMLE_zero = NEON2RegMiscFixed | 0x2080D000,
1440   NEON_FCMLT_zero = NEON2RegMiscFixed | 0x0080E000,
1441 
1442   NEON_FCVTL_opcode = NEON_FCVTL & NEON2RegMiscOpcode,
1443   NEON_FCVTN_opcode = NEON_FCVTN & NEON2RegMiscOpcode
1444 };
1445 
1446 // NEON instructions with three same-type operands.
1447 enum NEON3SameOp {
1448   NEON3SameFixed = 0x0E200400,
1449   NEON3SameFMask = 0x9F200400,
1450   NEON3SameMask =  0xBF20FC00,
1451   NEON3SameUBit =  0x20000000,
1452   NEON_ADD    = NEON3SameFixed | 0x00008000,
1453   NEON_ADDP   = NEON3SameFixed | 0x0000B800,
1454   NEON_SHADD  = NEON3SameFixed | 0x00000000,
1455   NEON_SHSUB  = NEON3SameFixed | 0x00002000,
1456   NEON_SRHADD = NEON3SameFixed | 0x00001000,
1457   NEON_CMEQ   = NEON3SameFixed | NEON3SameUBit | 0x00008800,
1458   NEON_CMGE   = NEON3SameFixed | 0x00003800,
1459   NEON_CMGT   = NEON3SameFixed | 0x00003000,
1460   NEON_CMHI   = NEON3SameFixed | NEON3SameUBit | NEON_CMGT,
1461   NEON_CMHS   = NEON3SameFixed | NEON3SameUBit | NEON_CMGE,
1462   NEON_CMTST  = NEON3SameFixed | 0x00008800,
1463   NEON_MLA    = NEON3SameFixed | 0x00009000,
1464   NEON_MLS    = NEON3SameFixed | 0x20009000,
1465   NEON_MUL    = NEON3SameFixed | 0x00009800,
1466   NEON_PMUL   = NEON3SameFixed | 0x20009800,
1467   NEON_SRSHL  = NEON3SameFixed | 0x00005000,
1468   NEON_SQSHL  = NEON3SameFixed | 0x00004800,
1469   NEON_SQRSHL = NEON3SameFixed | 0x00005800,
1470   NEON_SSHL   = NEON3SameFixed | 0x00004000,
1471   NEON_SMAX   = NEON3SameFixed | 0x00006000,
1472   NEON_SMAXP  = NEON3SameFixed | 0x0000A000,
1473   NEON_SMIN   = NEON3SameFixed | 0x00006800,
1474   NEON_SMINP  = NEON3SameFixed | 0x0000A800,
1475   NEON_SABD   = NEON3SameFixed | 0x00007000,
1476   NEON_SABA   = NEON3SameFixed | 0x00007800,
1477   NEON_UABD   = NEON3SameFixed | NEON3SameUBit | NEON_SABD,
1478   NEON_UABA   = NEON3SameFixed | NEON3SameUBit | NEON_SABA,
1479   NEON_SQADD  = NEON3SameFixed | 0x00000800,
1480   NEON_SQSUB  = NEON3SameFixed | 0x00002800,
1481   NEON_SUB    = NEON3SameFixed | NEON3SameUBit | 0x00008000,
1482   NEON_UHADD  = NEON3SameFixed | NEON3SameUBit | NEON_SHADD,
1483   NEON_UHSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SHSUB,
1484   NEON_URHADD = NEON3SameFixed | NEON3SameUBit | NEON_SRHADD,
1485   NEON_UMAX   = NEON3SameFixed | NEON3SameUBit | NEON_SMAX,
1486   NEON_UMAXP  = NEON3SameFixed | NEON3SameUBit | NEON_SMAXP,
1487   NEON_UMIN   = NEON3SameFixed | NEON3SameUBit | NEON_SMIN,
1488   NEON_UMINP  = NEON3SameFixed | NEON3SameUBit | NEON_SMINP,
1489   NEON_URSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SRSHL,
1490   NEON_UQADD  = NEON3SameFixed | NEON3SameUBit | NEON_SQADD,
1491   NEON_UQRSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQRSHL,
1492   NEON_UQSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SQSHL,
1493   NEON_UQSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SQSUB,
1494   NEON_USHL   = NEON3SameFixed | NEON3SameUBit | NEON_SSHL,
1495   NEON_SQDMULH  = NEON3SameFixed | 0x0000B000,
1496   NEON_SQRDMULH = NEON3SameFixed | 0x2000B000,
1497 
1498   // NEON floating point instructions with three same-type operands.
1499   NEON3SameFPFixed = NEON3SameFixed | 0x0000C000,
1500   NEON3SameFPFMask = NEON3SameFMask | 0x0000C000,
1501   NEON3SameFPMask = NEON3SameMask | 0x00800000,
1502   NEON_FADD    = NEON3SameFixed | 0x0000D000,
1503   NEON_FSUB    = NEON3SameFixed | 0x0080D000,
1504   NEON_FMUL    = NEON3SameFixed | 0x2000D800,
1505   NEON_FDIV    = NEON3SameFixed | 0x2000F800,
1506   NEON_FMAX    = NEON3SameFixed | 0x0000F000,
1507   NEON_FMAXNM  = NEON3SameFixed | 0x0000C000,
1508   NEON_FMAXP   = NEON3SameFixed | 0x2000F000,
1509   NEON_FMAXNMP = NEON3SameFixed | 0x2000C000,
1510   NEON_FMIN    = NEON3SameFixed | 0x0080F000,
1511   NEON_FMINNM  = NEON3SameFixed | 0x0080C000,
1512   NEON_FMINP   = NEON3SameFixed | 0x2080F000,
1513   NEON_FMINNMP = NEON3SameFixed | 0x2080C000,
1514   NEON_FMLA    = NEON3SameFixed | 0x0000C800,
1515   NEON_FMLS    = NEON3SameFixed | 0x0080C800,
1516   NEON_FMULX   = NEON3SameFixed | 0x0000D800,
1517   NEON_FRECPS  = NEON3SameFixed | 0x0000F800,
1518   NEON_FRSQRTS = NEON3SameFixed | 0x0080F800,
1519   NEON_FABD    = NEON3SameFixed | 0x2080D000,
1520   NEON_FADDP   = NEON3SameFixed | 0x2000D000,
1521   NEON_FCMEQ   = NEON3SameFixed | 0x0000E000,
1522   NEON_FCMGE   = NEON3SameFixed | 0x2000E000,
1523   NEON_FCMGT   = NEON3SameFixed | 0x2080E000,
1524   NEON_FACGE   = NEON3SameFixed | 0x2000E800,
1525   NEON_FACGT   = NEON3SameFixed | 0x2080E800,
1526 
1527   // NEON logical instructions with three same-type operands.
1528   NEON3SameLogicalFixed = NEON3SameFixed | 0x00001800,
1529   NEON3SameLogicalFMask = NEON3SameFMask | 0x0000F800,
1530   NEON3SameLogicalMask = 0xBFE0FC00,
1531   NEON3SameLogicalFormatMask = NEON_Q,
1532   NEON_AND = NEON3SameLogicalFixed | 0x00000000,
1533   NEON_ORR = NEON3SameLogicalFixed | 0x00A00000,
1534   NEON_ORN = NEON3SameLogicalFixed | 0x00C00000,
1535   NEON_EOR = NEON3SameLogicalFixed | 0x20000000,
1536   NEON_BIC = NEON3SameLogicalFixed | 0x00400000,
1537   NEON_BIF = NEON3SameLogicalFixed | 0x20C00000,
1538   NEON_BIT = NEON3SameLogicalFixed | 0x20800000,
1539   NEON_BSL = NEON3SameLogicalFixed | 0x20400000
1540 };
1541 
1542 // NEON instructions with three different-type operands.
1543 enum NEON3DifferentOp {
1544   NEON3DifferentFixed = 0x0E200000,
1545   NEON3DifferentFMask = 0x9F200C00,
1546   NEON3DifferentMask  = 0xFF20FC00,
1547   NEON_ADDHN    = NEON3DifferentFixed | 0x00004000,
1548   NEON_ADDHN2   = NEON_ADDHN | NEON_Q,
1549   NEON_PMULL    = NEON3DifferentFixed | 0x0000E000,
1550   NEON_PMULL2   = NEON_PMULL | NEON_Q,
1551   NEON_RADDHN   = NEON3DifferentFixed | 0x20004000,
1552   NEON_RADDHN2  = NEON_RADDHN | NEON_Q,
1553   NEON_RSUBHN   = NEON3DifferentFixed | 0x20006000,
1554   NEON_RSUBHN2  = NEON_RSUBHN | NEON_Q,
1555   NEON_SABAL    = NEON3DifferentFixed | 0x00005000,
1556   NEON_SABAL2   = NEON_SABAL | NEON_Q,
1557   NEON_SABDL    = NEON3DifferentFixed | 0x00007000,
1558   NEON_SABDL2   = NEON_SABDL | NEON_Q,
1559   NEON_SADDL    = NEON3DifferentFixed | 0x00000000,
1560   NEON_SADDL2   = NEON_SADDL | NEON_Q,
1561   NEON_SADDW    = NEON3DifferentFixed | 0x00001000,
1562   NEON_SADDW2   = NEON_SADDW | NEON_Q,
1563   NEON_SMLAL    = NEON3DifferentFixed | 0x00008000,
1564   NEON_SMLAL2   = NEON_SMLAL | NEON_Q,
1565   NEON_SMLSL    = NEON3DifferentFixed | 0x0000A000,
1566   NEON_SMLSL2   = NEON_SMLSL | NEON_Q,
1567   NEON_SMULL    = NEON3DifferentFixed | 0x0000C000,
1568   NEON_SMULL2   = NEON_SMULL | NEON_Q,
1569   NEON_SSUBL    = NEON3DifferentFixed | 0x00002000,
1570   NEON_SSUBL2   = NEON_SSUBL | NEON_Q,
1571   NEON_SSUBW    = NEON3DifferentFixed | 0x00003000,
1572   NEON_SSUBW2   = NEON_SSUBW | NEON_Q,
1573   NEON_SQDMLAL  = NEON3DifferentFixed | 0x00009000,
1574   NEON_SQDMLAL2 = NEON_SQDMLAL | NEON_Q,
1575   NEON_SQDMLSL  = NEON3DifferentFixed | 0x0000B000,
1576   NEON_SQDMLSL2 = NEON_SQDMLSL | NEON_Q,
1577   NEON_SQDMULL  = NEON3DifferentFixed | 0x0000D000,
1578   NEON_SQDMULL2 = NEON_SQDMULL | NEON_Q,
1579   NEON_SUBHN    = NEON3DifferentFixed | 0x00006000,
1580   NEON_SUBHN2   = NEON_SUBHN | NEON_Q,
1581   NEON_UABAL    = NEON_SABAL | NEON3SameUBit,
1582   NEON_UABAL2   = NEON_UABAL | NEON_Q,
1583   NEON_UABDL    = NEON_SABDL | NEON3SameUBit,
1584   NEON_UABDL2   = NEON_UABDL | NEON_Q,
1585   NEON_UADDL    = NEON_SADDL | NEON3SameUBit,
1586   NEON_UADDL2   = NEON_UADDL | NEON_Q,
1587   NEON_UADDW    = NEON_SADDW | NEON3SameUBit,
1588   NEON_UADDW2   = NEON_UADDW | NEON_Q,
1589   NEON_UMLAL    = NEON_SMLAL | NEON3SameUBit,
1590   NEON_UMLAL2   = NEON_UMLAL | NEON_Q,
1591   NEON_UMLSL    = NEON_SMLSL | NEON3SameUBit,
1592   NEON_UMLSL2   = NEON_UMLSL | NEON_Q,
1593   NEON_UMULL    = NEON_SMULL | NEON3SameUBit,
1594   NEON_UMULL2   = NEON_UMULL | NEON_Q,
1595   NEON_USUBL    = NEON_SSUBL | NEON3SameUBit,
1596   NEON_USUBL2   = NEON_USUBL | NEON_Q,
1597   NEON_USUBW    = NEON_SSUBW | NEON3SameUBit,
1598   NEON_USUBW2   = NEON_USUBW | NEON_Q
1599 };
1600 
1601 // NEON instructions operating across vectors.
1602 enum NEONAcrossLanesOp {
1603   NEONAcrossLanesFixed = 0x0E300800,
1604   NEONAcrossLanesFMask = 0x9F3E0C00,
1605   NEONAcrossLanesMask  = 0xBF3FFC00,
1606   NEON_ADDV   = NEONAcrossLanesFixed | 0x0001B000,
1607   NEON_SADDLV = NEONAcrossLanesFixed | 0x00003000,
1608   NEON_UADDLV = NEONAcrossLanesFixed | 0x20003000,
1609   NEON_SMAXV  = NEONAcrossLanesFixed | 0x0000A000,
1610   NEON_SMINV  = NEONAcrossLanesFixed | 0x0001A000,
1611   NEON_UMAXV  = NEONAcrossLanesFixed | 0x2000A000,
1612   NEON_UMINV  = NEONAcrossLanesFixed | 0x2001A000,
1613 
1614   // NEON floating point across instructions.
1615   NEONAcrossLanesFPFixed = NEONAcrossLanesFixed | 0x0000C000,
1616   NEONAcrossLanesFPFMask = NEONAcrossLanesFMask | 0x0000C000,
1617   NEONAcrossLanesFPMask  = NEONAcrossLanesMask  | 0x00800000,
1618 
1619   NEON_FMAXV   = NEONAcrossLanesFPFixed | 0x2000F000,
1620   NEON_FMINV   = NEONAcrossLanesFPFixed | 0x2080F000,
1621   NEON_FMAXNMV = NEONAcrossLanesFPFixed | 0x2000C000,
1622   NEON_FMINNMV = NEONAcrossLanesFPFixed | 0x2080C000
1623 };
1624 
1625 // NEON instructions with indexed element operand.
1626 enum NEONByIndexedElementOp {
1627   NEONByIndexedElementFixed = 0x0F000000,
1628   NEONByIndexedElementFMask = 0x9F000400,
1629   NEONByIndexedElementMask  = 0xBF00F400,
1630   NEON_MUL_byelement   = NEONByIndexedElementFixed | 0x00008000,
1631   NEON_MLA_byelement   = NEONByIndexedElementFixed | 0x20000000,
1632   NEON_MLS_byelement   = NEONByIndexedElementFixed | 0x20004000,
1633   NEON_SMULL_byelement = NEONByIndexedElementFixed | 0x0000A000,
1634   NEON_SMLAL_byelement = NEONByIndexedElementFixed | 0x00002000,
1635   NEON_SMLSL_byelement = NEONByIndexedElementFixed | 0x00006000,
1636   NEON_UMULL_byelement = NEONByIndexedElementFixed | 0x2000A000,
1637   NEON_UMLAL_byelement = NEONByIndexedElementFixed | 0x20002000,
1638   NEON_UMLSL_byelement = NEONByIndexedElementFixed | 0x20006000,
1639   NEON_SQDMULL_byelement = NEONByIndexedElementFixed | 0x0000B000,
1640   NEON_SQDMLAL_byelement = NEONByIndexedElementFixed | 0x00003000,
1641   NEON_SQDMLSL_byelement = NEONByIndexedElementFixed | 0x00007000,
1642   NEON_SQDMULH_byelement  = NEONByIndexedElementFixed | 0x0000C000,
1643   NEON_SQRDMULH_byelement = NEONByIndexedElementFixed | 0x0000D000,
1644 
1645   // Floating point instructions.
1646   NEONByIndexedElementFPFixed = NEONByIndexedElementFixed | 0x00800000,
1647   NEONByIndexedElementFPMask = NEONByIndexedElementMask | 0x00800000,
1648   NEON_FMLA_byelement  = NEONByIndexedElementFPFixed | 0x00001000,
1649   NEON_FMLS_byelement  = NEONByIndexedElementFPFixed | 0x00005000,
1650   NEON_FMUL_byelement  = NEONByIndexedElementFPFixed | 0x00009000,
1651   NEON_FMULX_byelement = NEONByIndexedElementFPFixed | 0x20009000
1652 };
1653 
1654 // NEON register copy.
1655 enum NEONCopyOp {
1656   NEONCopyFixed = 0x0E000400,
1657   NEONCopyFMask = 0x9FE08400,
1658   NEONCopyMask  = 0x3FE08400,
1659   NEONCopyInsElementMask = NEONCopyMask | 0x40000000,
1660   NEONCopyInsGeneralMask = NEONCopyMask | 0x40007800,
1661   NEONCopyDupElementMask = NEONCopyMask | 0x20007800,
1662   NEONCopyDupGeneralMask = NEONCopyDupElementMask,
1663   NEONCopyUmovMask       = NEONCopyMask | 0x20007800,
1664   NEONCopySmovMask       = NEONCopyMask | 0x20007800,
1665   NEON_INS_ELEMENT       = NEONCopyFixed | 0x60000000,
1666   NEON_INS_GENERAL       = NEONCopyFixed | 0x40001800,
1667   NEON_DUP_ELEMENT       = NEONCopyFixed | 0x00000000,
1668   NEON_DUP_GENERAL       = NEONCopyFixed | 0x00000800,
1669   NEON_SMOV              = NEONCopyFixed | 0x00002800,
1670   NEON_UMOV              = NEONCopyFixed | 0x00003800
1671 };
1672 
1673 // NEON extract.
1674 enum NEONExtractOp {
1675   NEONExtractFixed = 0x2E000000,
1676   NEONExtractFMask = 0xBF208400,
1677   NEONExtractMask =  0xBFE08400,
1678   NEON_EXT = NEONExtractFixed | 0x00000000
1679 };
1680 
1681 enum NEONLoadStoreMultiOp {
1682   NEONLoadStoreMultiL    = 0x00400000,
1683   NEONLoadStoreMulti1_1v = 0x00007000,
1684   NEONLoadStoreMulti1_2v = 0x0000A000,
1685   NEONLoadStoreMulti1_3v = 0x00006000,
1686   NEONLoadStoreMulti1_4v = 0x00002000,
1687   NEONLoadStoreMulti2    = 0x00008000,
1688   NEONLoadStoreMulti3    = 0x00004000,
1689   NEONLoadStoreMulti4    = 0x00000000
1690 };
1691 
1692 // NEON load/store multiple structures.
1693 enum NEONLoadStoreMultiStructOp {
1694   NEONLoadStoreMultiStructFixed = 0x0C000000,
1695   NEONLoadStoreMultiStructFMask = 0xBFBF0000,
1696   NEONLoadStoreMultiStructMask  = 0xBFFFF000,
1697   NEONLoadStoreMultiStructStore = NEONLoadStoreMultiStructFixed,
1698   NEONLoadStoreMultiStructLoad  = NEONLoadStoreMultiStructFixed |
1699                                   NEONLoadStoreMultiL,
1700   NEON_LD1_1v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_1v,
1701   NEON_LD1_2v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_2v,
1702   NEON_LD1_3v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_3v,
1703   NEON_LD1_4v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_4v,
1704   NEON_LD2    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti2,
1705   NEON_LD3    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti3,
1706   NEON_LD4    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti4,
1707   NEON_ST1_1v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_1v,
1708   NEON_ST1_2v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_2v,
1709   NEON_ST1_3v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_3v,
1710   NEON_ST1_4v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_4v,
1711   NEON_ST2    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti2,
1712   NEON_ST3    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti3,
1713   NEON_ST4    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti4
1714 };
1715 
1716 // NEON load/store multiple structures with post-index addressing.
1717 enum NEONLoadStoreMultiStructPostIndexOp {
1718   NEONLoadStoreMultiStructPostIndexFixed = 0x0C800000,
1719   NEONLoadStoreMultiStructPostIndexFMask = 0xBFA00000,
1720   NEONLoadStoreMultiStructPostIndexMask  = 0xBFE0F000,
1721   NEONLoadStoreMultiStructPostIndex = 0x00800000,
1722   NEON_LD1_1v_post = NEON_LD1_1v | NEONLoadStoreMultiStructPostIndex,
1723   NEON_LD1_2v_post = NEON_LD1_2v | NEONLoadStoreMultiStructPostIndex,
1724   NEON_LD1_3v_post = NEON_LD1_3v | NEONLoadStoreMultiStructPostIndex,
1725   NEON_LD1_4v_post = NEON_LD1_4v | NEONLoadStoreMultiStructPostIndex,
1726   NEON_LD2_post = NEON_LD2 | NEONLoadStoreMultiStructPostIndex,
1727   NEON_LD3_post = NEON_LD3 | NEONLoadStoreMultiStructPostIndex,
1728   NEON_LD4_post = NEON_LD4 | NEONLoadStoreMultiStructPostIndex,
1729   NEON_ST1_1v_post = NEON_ST1_1v | NEONLoadStoreMultiStructPostIndex,
1730   NEON_ST1_2v_post = NEON_ST1_2v | NEONLoadStoreMultiStructPostIndex,
1731   NEON_ST1_3v_post = NEON_ST1_3v | NEONLoadStoreMultiStructPostIndex,
1732   NEON_ST1_4v_post = NEON_ST1_4v | NEONLoadStoreMultiStructPostIndex,
1733   NEON_ST2_post = NEON_ST2 | NEONLoadStoreMultiStructPostIndex,
1734   NEON_ST3_post = NEON_ST3 | NEONLoadStoreMultiStructPostIndex,
1735   NEON_ST4_post = NEON_ST4 | NEONLoadStoreMultiStructPostIndex
1736 };
1737 
1738 enum NEONLoadStoreSingleOp {
1739   NEONLoadStoreSingle1        = 0x00000000,
1740   NEONLoadStoreSingle2        = 0x00200000,
1741   NEONLoadStoreSingle3        = 0x00002000,
1742   NEONLoadStoreSingle4        = 0x00202000,
1743   NEONLoadStoreSingleL        = 0x00400000,
1744   NEONLoadStoreSingle_b       = 0x00000000,
1745   NEONLoadStoreSingle_h       = 0x00004000,
1746   NEONLoadStoreSingle_s       = 0x00008000,
1747   NEONLoadStoreSingle_d       = 0x00008400,
1748   NEONLoadStoreSingleAllLanes = 0x0000C000,
1749   NEONLoadStoreSingleLenMask  = 0x00202000
1750 };
1751 
1752 // NEON load/store single structure.
1753 enum NEONLoadStoreSingleStructOp {
1754   NEONLoadStoreSingleStructFixed = 0x0D000000,
1755   NEONLoadStoreSingleStructFMask = 0xBF9F0000,
1756   NEONLoadStoreSingleStructMask  = 0xBFFFE000,
1757   NEONLoadStoreSingleStructStore = NEONLoadStoreSingleStructFixed,
1758   NEONLoadStoreSingleStructLoad  = NEONLoadStoreSingleStructFixed |
1759                                    NEONLoadStoreSingleL,
1760   NEONLoadStoreSingleStructLoad1 = NEONLoadStoreSingle1 |
1761                                    NEONLoadStoreSingleStructLoad,
1762   NEONLoadStoreSingleStructLoad2 = NEONLoadStoreSingle2 |
1763                                    NEONLoadStoreSingleStructLoad,
1764   NEONLoadStoreSingleStructLoad3 = NEONLoadStoreSingle3 |
1765                                    NEONLoadStoreSingleStructLoad,
1766   NEONLoadStoreSingleStructLoad4 = NEONLoadStoreSingle4 |
1767                                    NEONLoadStoreSingleStructLoad,
1768   NEONLoadStoreSingleStructStore1 = NEONLoadStoreSingle1 |
1769                                     NEONLoadStoreSingleStructFixed,
1770   NEONLoadStoreSingleStructStore2 = NEONLoadStoreSingle2 |
1771                                     NEONLoadStoreSingleStructFixed,
1772   NEONLoadStoreSingleStructStore3 = NEONLoadStoreSingle3 |
1773                                     NEONLoadStoreSingleStructFixed,
1774   NEONLoadStoreSingleStructStore4 = NEONLoadStoreSingle4 |
1775                                     NEONLoadStoreSingleStructFixed,
1776   NEON_LD1_b = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_b,
1777   NEON_LD1_h = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_h,
1778   NEON_LD1_s = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_s,
1779   NEON_LD1_d = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_d,
1780   NEON_LD1R  = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingleAllLanes,
1781   NEON_ST1_b = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_b,
1782   NEON_ST1_h = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_h,
1783   NEON_ST1_s = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_s,
1784   NEON_ST1_d = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_d,
1785 
1786   NEON_LD2_b = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_b,
1787   NEON_LD2_h = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_h,
1788   NEON_LD2_s = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_s,
1789   NEON_LD2_d = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_d,
1790   NEON_LD2R  = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingleAllLanes,
1791   NEON_ST2_b = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_b,
1792   NEON_ST2_h = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_h,
1793   NEON_ST2_s = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_s,
1794   NEON_ST2_d = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_d,
1795 
1796   NEON_LD3_b = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_b,
1797   NEON_LD3_h = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_h,
1798   NEON_LD3_s = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_s,
1799   NEON_LD3_d = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_d,
1800   NEON_LD3R  = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingleAllLanes,
1801   NEON_ST3_b = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_b,
1802   NEON_ST3_h = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_h,
1803   NEON_ST3_s = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_s,
1804   NEON_ST3_d = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_d,
1805 
1806   NEON_LD4_b = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_b,
1807   NEON_LD4_h = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_h,
1808   NEON_LD4_s = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_s,
1809   NEON_LD4_d = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_d,
1810   NEON_LD4R  = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingleAllLanes,
1811   NEON_ST4_b = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_b,
1812   NEON_ST4_h = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_h,
1813   NEON_ST4_s = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_s,
1814   NEON_ST4_d = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_d
1815 };
1816 
1817 // NEON load/store single structure with post-index addressing.
1818 enum NEONLoadStoreSingleStructPostIndexOp {
1819   NEONLoadStoreSingleStructPostIndexFixed = 0x0D800000,
1820   NEONLoadStoreSingleStructPostIndexFMask = 0xBF800000,
1821   NEONLoadStoreSingleStructPostIndexMask  = 0xBFE0E000,
1822   NEONLoadStoreSingleStructPostIndex =      0x00800000,
1823   NEON_LD1_b_post = NEON_LD1_b | NEONLoadStoreSingleStructPostIndex,
1824   NEON_LD1_h_post = NEON_LD1_h | NEONLoadStoreSingleStructPostIndex,
1825   NEON_LD1_s_post = NEON_LD1_s | NEONLoadStoreSingleStructPostIndex,
1826   NEON_LD1_d_post = NEON_LD1_d | NEONLoadStoreSingleStructPostIndex,
1827   NEON_LD1R_post  = NEON_LD1R | NEONLoadStoreSingleStructPostIndex,
1828   NEON_ST1_b_post = NEON_ST1_b | NEONLoadStoreSingleStructPostIndex,
1829   NEON_ST1_h_post = NEON_ST1_h | NEONLoadStoreSingleStructPostIndex,
1830   NEON_ST1_s_post = NEON_ST1_s | NEONLoadStoreSingleStructPostIndex,
1831   NEON_ST1_d_post = NEON_ST1_d | NEONLoadStoreSingleStructPostIndex,
1832 
1833   NEON_LD2_b_post = NEON_LD2_b | NEONLoadStoreSingleStructPostIndex,
1834   NEON_LD2_h_post = NEON_LD2_h | NEONLoadStoreSingleStructPostIndex,
1835   NEON_LD2_s_post = NEON_LD2_s | NEONLoadStoreSingleStructPostIndex,
1836   NEON_LD2_d_post = NEON_LD2_d | NEONLoadStoreSingleStructPostIndex,
1837   NEON_LD2R_post  = NEON_LD2R | NEONLoadStoreSingleStructPostIndex,
1838   NEON_ST2_b_post = NEON_ST2_b | NEONLoadStoreSingleStructPostIndex,
1839   NEON_ST2_h_post = NEON_ST2_h | NEONLoadStoreSingleStructPostIndex,
1840   NEON_ST2_s_post = NEON_ST2_s | NEONLoadStoreSingleStructPostIndex,
1841   NEON_ST2_d_post = NEON_ST2_d | NEONLoadStoreSingleStructPostIndex,
1842 
1843   NEON_LD3_b_post = NEON_LD3_b | NEONLoadStoreSingleStructPostIndex,
1844   NEON_LD3_h_post = NEON_LD3_h | NEONLoadStoreSingleStructPostIndex,
1845   NEON_LD3_s_post = NEON_LD3_s | NEONLoadStoreSingleStructPostIndex,
1846   NEON_LD3_d_post = NEON_LD3_d | NEONLoadStoreSingleStructPostIndex,
1847   NEON_LD3R_post  = NEON_LD3R | NEONLoadStoreSingleStructPostIndex,
1848   NEON_ST3_b_post = NEON_ST3_b | NEONLoadStoreSingleStructPostIndex,
1849   NEON_ST3_h_post = NEON_ST3_h | NEONLoadStoreSingleStructPostIndex,
1850   NEON_ST3_s_post = NEON_ST3_s | NEONLoadStoreSingleStructPostIndex,
1851   NEON_ST3_d_post = NEON_ST3_d | NEONLoadStoreSingleStructPostIndex,
1852 
1853   NEON_LD4_b_post = NEON_LD4_b | NEONLoadStoreSingleStructPostIndex,
1854   NEON_LD4_h_post = NEON_LD4_h | NEONLoadStoreSingleStructPostIndex,
1855   NEON_LD4_s_post = NEON_LD4_s | NEONLoadStoreSingleStructPostIndex,
1856   NEON_LD4_d_post = NEON_LD4_d | NEONLoadStoreSingleStructPostIndex,
1857   NEON_LD4R_post  = NEON_LD4R | NEONLoadStoreSingleStructPostIndex,
1858   NEON_ST4_b_post = NEON_ST4_b | NEONLoadStoreSingleStructPostIndex,
1859   NEON_ST4_h_post = NEON_ST4_h | NEONLoadStoreSingleStructPostIndex,
1860   NEON_ST4_s_post = NEON_ST4_s | NEONLoadStoreSingleStructPostIndex,
1861   NEON_ST4_d_post = NEON_ST4_d | NEONLoadStoreSingleStructPostIndex
1862 };
1863 
1864 // NEON modified immediate.
1865 enum NEONModifiedImmediateOp {
1866   NEONModifiedImmediateFixed = 0x0F000400,
1867   NEONModifiedImmediateFMask = 0x9FF80400,
1868   NEONModifiedImmediateOpBit = 0x20000000,
1869   NEONModifiedImmediate_MOVI = NEONModifiedImmediateFixed | 0x00000000,
1870   NEONModifiedImmediate_MVNI = NEONModifiedImmediateFixed | 0x20000000,
1871   NEONModifiedImmediate_ORR  = NEONModifiedImmediateFixed | 0x00001000,
1872   NEONModifiedImmediate_BIC  = NEONModifiedImmediateFixed | 0x20001000
1873 };
1874 
1875 // NEON shift immediate.
1876 enum NEONShiftImmediateOp {
1877   NEONShiftImmediateFixed = 0x0F000400,
1878   NEONShiftImmediateFMask = 0x9F800400,
1879   NEONShiftImmediateMask  = 0xBF80FC00,
1880   NEONShiftImmediateUBit  = 0x20000000,
1881   NEON_SHL      = NEONShiftImmediateFixed | 0x00005000,
1882   NEON_SSHLL    = NEONShiftImmediateFixed | 0x0000A000,
1883   NEON_USHLL    = NEONShiftImmediateFixed | 0x2000A000,
1884   NEON_SLI      = NEONShiftImmediateFixed | 0x20005000,
1885   NEON_SRI      = NEONShiftImmediateFixed | 0x20004000,
1886   NEON_SHRN     = NEONShiftImmediateFixed | 0x00008000,
1887   NEON_RSHRN    = NEONShiftImmediateFixed | 0x00008800,
1888   NEON_UQSHRN   = NEONShiftImmediateFixed | 0x20009000,
1889   NEON_UQRSHRN  = NEONShiftImmediateFixed | 0x20009800,
1890   NEON_SQSHRN   = NEONShiftImmediateFixed | 0x00009000,
1891   NEON_SQRSHRN  = NEONShiftImmediateFixed | 0x00009800,
1892   NEON_SQSHRUN  = NEONShiftImmediateFixed | 0x20008000,
1893   NEON_SQRSHRUN = NEONShiftImmediateFixed | 0x20008800,
1894   NEON_SSHR     = NEONShiftImmediateFixed | 0x00000000,
1895   NEON_SRSHR    = NEONShiftImmediateFixed | 0x00002000,
1896   NEON_USHR     = NEONShiftImmediateFixed | 0x20000000,
1897   NEON_URSHR    = NEONShiftImmediateFixed | 0x20002000,
1898   NEON_SSRA     = NEONShiftImmediateFixed | 0x00001000,
1899   NEON_SRSRA    = NEONShiftImmediateFixed | 0x00003000,
1900   NEON_USRA     = NEONShiftImmediateFixed | 0x20001000,
1901   NEON_URSRA    = NEONShiftImmediateFixed | 0x20003000,
1902   NEON_SQSHLU   = NEONShiftImmediateFixed | 0x20006000,
1903   NEON_SCVTF_imm = NEONShiftImmediateFixed | 0x0000E000,
1904   NEON_UCVTF_imm = NEONShiftImmediateFixed | 0x2000E000,
1905   NEON_FCVTZS_imm = NEONShiftImmediateFixed | 0x0000F800,
1906   NEON_FCVTZU_imm = NEONShiftImmediateFixed | 0x2000F800,
1907   NEON_SQSHL_imm = NEONShiftImmediateFixed | 0x00007000,
1908   NEON_UQSHL_imm = NEONShiftImmediateFixed | 0x20007000
1909 };
1910 
1911 // NEON table.
1912 enum NEONTableOp {
1913   NEONTableFixed = 0x0E000000,
1914   NEONTableFMask = 0xBF208C00,
1915   NEONTableExt   = 0x00001000,
1916   NEONTableMask  = 0xBF20FC00,
1917   NEON_TBL_1v    = NEONTableFixed | 0x00000000,
1918   NEON_TBL_2v    = NEONTableFixed | 0x00002000,
1919   NEON_TBL_3v    = NEONTableFixed | 0x00004000,
1920   NEON_TBL_4v    = NEONTableFixed | 0x00006000,
1921   NEON_TBX_1v    = NEON_TBL_1v | NEONTableExt,
1922   NEON_TBX_2v    = NEON_TBL_2v | NEONTableExt,
1923   NEON_TBX_3v    = NEON_TBL_3v | NEONTableExt,
1924   NEON_TBX_4v    = NEON_TBL_4v | NEONTableExt
1925 };
1926 
1927 // NEON perm.
1928 enum NEONPermOp {
1929   NEONPermFixed = 0x0E000800,
1930   NEONPermFMask = 0xBF208C00,
1931   NEONPermMask  = 0x3F20FC00,
1932   NEON_UZP1 = NEONPermFixed | 0x00001000,
1933   NEON_TRN1 = NEONPermFixed | 0x00002000,
1934   NEON_ZIP1 = NEONPermFixed | 0x00003000,
1935   NEON_UZP2 = NEONPermFixed | 0x00005000,
1936   NEON_TRN2 = NEONPermFixed | 0x00006000,
1937   NEON_ZIP2 = NEONPermFixed | 0x00007000
1938 };
1939 
1940 // NEON scalar instructions with two register operands.
1941 enum NEONScalar2RegMiscOp {
1942   NEONScalar2RegMiscFixed = 0x5E200800,
1943   NEONScalar2RegMiscFMask = 0xDF3E0C00,
1944   NEONScalar2RegMiscMask = NEON_Q | NEONScalar | NEON2RegMiscMask,
1945   NEON_CMGT_zero_scalar = NEON_Q | NEONScalar | NEON_CMGT_zero,
1946   NEON_CMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_CMEQ_zero,
1947   NEON_CMLT_zero_scalar = NEON_Q | NEONScalar | NEON_CMLT_zero,
1948   NEON_CMGE_zero_scalar = NEON_Q | NEONScalar | NEON_CMGE_zero,
1949   NEON_CMLE_zero_scalar = NEON_Q | NEONScalar | NEON_CMLE_zero,
1950   NEON_ABS_scalar       = NEON_Q | NEONScalar | NEON_ABS,
1951   NEON_SQABS_scalar     = NEON_Q | NEONScalar | NEON_SQABS,
1952   NEON_NEG_scalar       = NEON_Q | NEONScalar | NEON_NEG,
1953   NEON_SQNEG_scalar     = NEON_Q | NEONScalar | NEON_SQNEG,
1954   NEON_SQXTN_scalar     = NEON_Q | NEONScalar | NEON_SQXTN,
1955   NEON_UQXTN_scalar     = NEON_Q | NEONScalar | NEON_UQXTN,
1956   NEON_SQXTUN_scalar    = NEON_Q | NEONScalar | NEON_SQXTUN,
1957   NEON_SUQADD_scalar    = NEON_Q | NEONScalar | NEON_SUQADD,
1958   NEON_USQADD_scalar    = NEON_Q | NEONScalar | NEON_USQADD,
1959 
1960   NEONScalar2RegMiscOpcode = NEON2RegMiscOpcode,
1961   NEON_NEG_scalar_opcode = NEON_NEG_scalar & NEONScalar2RegMiscOpcode,
1962 
1963   NEONScalar2RegMiscFPMask  = NEONScalar2RegMiscMask | 0x00800000,
1964   NEON_FRSQRTE_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE,
1965   NEON_FRECPE_scalar     = NEON_Q | NEONScalar | NEON_FRECPE,
1966   NEON_SCVTF_scalar      = NEON_Q | NEONScalar | NEON_SCVTF,
1967   NEON_UCVTF_scalar      = NEON_Q | NEONScalar | NEON_UCVTF,
1968   NEON_FCMGT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_zero,
1969   NEON_FCMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_zero,
1970   NEON_FCMLT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_zero,
1971   NEON_FCMGE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_zero,
1972   NEON_FCMLE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_zero,
1973   NEON_FRECPX_scalar     = NEONScalar2RegMiscFixed | 0x0081F000,
1974   NEON_FCVTNS_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS,
1975   NEON_FCVTNU_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU,
1976   NEON_FCVTPS_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS,
1977   NEON_FCVTPU_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU,
1978   NEON_FCVTMS_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS,
1979   NEON_FCVTMU_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU,
1980   NEON_FCVTZS_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS,
1981   NEON_FCVTZU_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU,
1982   NEON_FCVTAS_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS,
1983   NEON_FCVTAU_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU,
1984   NEON_FCVTXN_scalar     = NEON_Q | NEONScalar | NEON_FCVTXN
1985 };
1986 
1987 // NEON scalar instructions with three same-type operands.
1988 enum NEONScalar3SameOp {
1989   NEONScalar3SameFixed = 0x5E200400,
1990   NEONScalar3SameFMask = 0xDF200400,
1991   NEONScalar3SameMask  = 0xFF20FC00,
1992   NEON_ADD_scalar    = NEON_Q | NEONScalar | NEON_ADD,
1993   NEON_CMEQ_scalar   = NEON_Q | NEONScalar | NEON_CMEQ,
1994   NEON_CMGE_scalar   = NEON_Q | NEONScalar | NEON_CMGE,
1995   NEON_CMGT_scalar   = NEON_Q | NEONScalar | NEON_CMGT,
1996   NEON_CMHI_scalar   = NEON_Q | NEONScalar | NEON_CMHI,
1997   NEON_CMHS_scalar   = NEON_Q | NEONScalar | NEON_CMHS,
1998   NEON_CMTST_scalar  = NEON_Q | NEONScalar | NEON_CMTST,
1999   NEON_SUB_scalar    = NEON_Q | NEONScalar | NEON_SUB,
2000   NEON_UQADD_scalar  = NEON_Q | NEONScalar | NEON_UQADD,
2001   NEON_SQADD_scalar  = NEON_Q | NEONScalar | NEON_SQADD,
2002   NEON_UQSUB_scalar  = NEON_Q | NEONScalar | NEON_UQSUB,
2003   NEON_SQSUB_scalar  = NEON_Q | NEONScalar | NEON_SQSUB,
2004   NEON_USHL_scalar   = NEON_Q | NEONScalar | NEON_USHL,
2005   NEON_SSHL_scalar   = NEON_Q | NEONScalar | NEON_SSHL,
2006   NEON_UQSHL_scalar  = NEON_Q | NEONScalar | NEON_UQSHL,
2007   NEON_SQSHL_scalar  = NEON_Q | NEONScalar | NEON_SQSHL,
2008   NEON_URSHL_scalar  = NEON_Q | NEONScalar | NEON_URSHL,
2009   NEON_SRSHL_scalar  = NEON_Q | NEONScalar | NEON_SRSHL,
2010   NEON_UQRSHL_scalar = NEON_Q | NEONScalar | NEON_UQRSHL,
2011   NEON_SQRSHL_scalar = NEON_Q | NEONScalar | NEON_SQRSHL,
2012   NEON_SQDMULH_scalar = NEON_Q | NEONScalar | NEON_SQDMULH,
2013   NEON_SQRDMULH_scalar = NEON_Q | NEONScalar | NEON_SQRDMULH,
2014 
2015   // NEON floating point scalar instructions with three same-type operands.
2016   NEONScalar3SameFPFixed = NEONScalar3SameFixed | 0x0000C000,
2017   NEONScalar3SameFPFMask = NEONScalar3SameFMask | 0x0000C000,
2018   NEONScalar3SameFPMask  = NEONScalar3SameMask | 0x00800000,
2019   NEON_FACGE_scalar   = NEON_Q | NEONScalar | NEON_FACGE,
2020   NEON_FACGT_scalar   = NEON_Q | NEONScalar | NEON_FACGT,
2021   NEON_FCMEQ_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ,
2022   NEON_FCMGE_scalar   = NEON_Q | NEONScalar | NEON_FCMGE,
2023   NEON_FCMGT_scalar   = NEON_Q | NEONScalar | NEON_FCMGT,
2024   NEON_FMULX_scalar   = NEON_Q | NEONScalar | NEON_FMULX,
2025   NEON_FRECPS_scalar  = NEON_Q | NEONScalar | NEON_FRECPS,
2026   NEON_FRSQRTS_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS,
2027   NEON_FABD_scalar    = NEON_Q | NEONScalar | NEON_FABD
2028 };
2029 
2030 // NEON scalar instructions with three different-type operands.
2031 enum NEONScalar3DiffOp {
2032   NEONScalar3DiffFixed = 0x5E200000,
2033   NEONScalar3DiffFMask = 0xDF200C00,
2034   NEONScalar3DiffMask  = NEON_Q | NEONScalar | NEON3DifferentMask,
2035   NEON_SQDMLAL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL,
2036   NEON_SQDMLSL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL,
2037   NEON_SQDMULL_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL
2038 };
2039 
2040 // NEON scalar instructions with indexed element operand.
2041 enum NEONScalarByIndexedElementOp {
2042   NEONScalarByIndexedElementFixed = 0x5F000000,
2043   NEONScalarByIndexedElementFMask = 0xDF000400,
2044   NEONScalarByIndexedElementMask  = 0xFF00F400,
2045   NEON_SQDMLAL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL_byelement,
2046   NEON_SQDMLSL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL_byelement,
2047   NEON_SQDMULL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL_byelement,
2048   NEON_SQDMULH_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULH_byelement,
2049   NEON_SQRDMULH_byelement_scalar
2050     = NEON_Q | NEONScalar | NEON_SQRDMULH_byelement,
2051 
2052   // Floating point instructions.
2053   NEONScalarByIndexedElementFPFixed
2054     = NEONScalarByIndexedElementFixed | 0x00800000,
2055   NEONScalarByIndexedElementFPMask
2056     = NEONScalarByIndexedElementMask | 0x00800000,
2057   NEON_FMLA_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_byelement,
2058   NEON_FMLS_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_byelement,
2059   NEON_FMUL_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_byelement,
2060   NEON_FMULX_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_byelement
2061 };
2062 
2063 // NEON scalar register copy.
2064 enum NEONScalarCopyOp {
2065   NEONScalarCopyFixed = 0x5E000400,
2066   NEONScalarCopyFMask = 0xDFE08400,
2067   NEONScalarCopyMask  = 0xFFE0FC00,
2068   NEON_DUP_ELEMENT_scalar = NEON_Q | NEONScalar | NEON_DUP_ELEMENT
2069 };
2070 
2071 // NEON scalar pairwise instructions.
2072 enum NEONScalarPairwiseOp {
2073   NEONScalarPairwiseFixed = 0x5E300800,
2074   NEONScalarPairwiseFMask = 0xDF3E0C00,
2075   NEONScalarPairwiseMask  = 0xFFB1F800,
2076   NEON_ADDP_scalar    = NEONScalarPairwiseFixed | 0x0081B000,
2077   NEON_FMAXNMP_scalar = NEONScalarPairwiseFixed | 0x2000C000,
2078   NEON_FMINNMP_scalar = NEONScalarPairwiseFixed | 0x2080C000,
2079   NEON_FADDP_scalar   = NEONScalarPairwiseFixed | 0x2000D000,
2080   NEON_FMAXP_scalar   = NEONScalarPairwiseFixed | 0x2000F000,
2081   NEON_FMINP_scalar   = NEONScalarPairwiseFixed | 0x2080F000
2082 };
2083 
2084 // NEON scalar shift immediate.
2085 enum NEONScalarShiftImmediateOp {
2086   NEONScalarShiftImmediateFixed = 0x5F000400,
2087   NEONScalarShiftImmediateFMask = 0xDF800400,
2088   NEONScalarShiftImmediateMask  = 0xFF80FC00,
2089   NEON_SHL_scalar  =       NEON_Q | NEONScalar | NEON_SHL,
2090   NEON_SLI_scalar  =       NEON_Q | NEONScalar | NEON_SLI,
2091   NEON_SRI_scalar  =       NEON_Q | NEONScalar | NEON_SRI,
2092   NEON_SSHR_scalar =       NEON_Q | NEONScalar | NEON_SSHR,
2093   NEON_USHR_scalar =       NEON_Q | NEONScalar | NEON_USHR,
2094   NEON_SRSHR_scalar =      NEON_Q | NEONScalar | NEON_SRSHR,
2095   NEON_URSHR_scalar =      NEON_Q | NEONScalar | NEON_URSHR,
2096   NEON_SSRA_scalar =       NEON_Q | NEONScalar | NEON_SSRA,
2097   NEON_USRA_scalar =       NEON_Q | NEONScalar | NEON_USRA,
2098   NEON_SRSRA_scalar =      NEON_Q | NEONScalar | NEON_SRSRA,
2099   NEON_URSRA_scalar =      NEON_Q | NEONScalar | NEON_URSRA,
2100   NEON_UQSHRN_scalar =     NEON_Q | NEONScalar | NEON_UQSHRN,
2101   NEON_UQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_UQRSHRN,
2102   NEON_SQSHRN_scalar =     NEON_Q | NEONScalar | NEON_SQSHRN,
2103   NEON_SQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_SQRSHRN,
2104   NEON_SQSHRUN_scalar =    NEON_Q | NEONScalar | NEON_SQSHRUN,
2105   NEON_SQRSHRUN_scalar =   NEON_Q | NEONScalar | NEON_SQRSHRUN,
2106   NEON_SQSHLU_scalar =     NEON_Q | NEONScalar | NEON_SQSHLU,
2107   NEON_SQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_SQSHL_imm,
2108   NEON_UQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_UQSHL_imm,
2109   NEON_SCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_SCVTF_imm,
2110   NEON_UCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_UCVTF_imm,
2111   NEON_FCVTZS_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZS_imm,
2112   NEON_FCVTZU_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZU_imm
2113 };
2114 
2115 // Unimplemented and unallocated instructions. These are defined to make fixed
2116 // bit assertion easier.
2117 enum UnimplementedOp {
2118   UnimplementedFixed = 0x00000000,
2119   UnimplementedFMask = 0x00000000
2120 };
2121 
2122 enum UnallocatedOp {
2123   UnallocatedFixed = 0x00000000,
2124   UnallocatedFMask = 0x00000000
2125 };
2126 
2127 // Re-enable `clang-format` after the `enum`s.
2128 // clang-format on
2129 
2130 }  // namespace aarch64
2131 }  // namespace vixl
2132 
2133 #endif  // VIXL_AARCH64_CONSTANTS_AARCH64_H_
2134