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1 // Copyright 2015, VIXL authors
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are met:
6 //
7 //   * Redistributions of source code must retain the above copyright notice,
8 //     this list of conditions and the following disclaimer.
9 //   * Redistributions in binary form must reproduce the above copyright notice,
10 //     this list of conditions and the following disclaimer in the documentation
11 //     and/or other materials provided with the distribution.
12 //   * Neither the name of ARM Limited nor the names of its contributors may be
13 //     used to endorse or promote products derived from this software without
14 //     specific prior written permission.
15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 // Callee saved registers are x21-x30(lr).
38 const int kNumberOfCalleeSavedRegisters = 10;
39 const int kFirstCalleeSavedRegisterIndex = 21;
40 // Callee saved FP registers are d8-d15. Note that the high parts of v8-v15 are
41 // still caller-saved.
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_(RmLow16, 19, 16, ExtractBits)  /* Second source register (code 0-15).  */ \
58 V_(Ra, 14, 10, ExtractBits)       /* Third source register.               */ \
59 V_(Rt, 4, 0, ExtractBits)         /* Load/store register.                 */ \
60 V_(Rt2, 14, 10, ExtractBits)      /* Load/store second register.          */ \
61 V_(Rs, 20, 16, ExtractBits)       /* Exclusive access status.             */ \
62                                                                              \
63 /* Common bits */                                                            \
64 V_(SixtyFourBits, 31, 31, ExtractBits)                                       \
65 V_(FlagsUpdate, 29, 29, ExtractBits)                                         \
66                                                                              \
67 /* PC relative addressing */                                                 \
68 V_(ImmPCRelHi, 23, 5, ExtractSignedBits)                                     \
69 V_(ImmPCRelLo, 30, 29, ExtractBits)                                          \
70                                                                              \
71 /* Add/subtract/logical shift register */                                    \
72 V_(ShiftDP, 23, 22, ExtractBits)                                             \
73 V_(ImmDPShift, 15, 10, ExtractBits)                                          \
74                                                                              \
75 /* Add/subtract immediate */                                                 \
76 V_(ImmAddSub, 21, 10, ExtractBits)                                           \
77 V_(ShiftAddSub, 23, 22, ExtractBits)                                         \
78                                                                              \
79 /* Add/substract extend */                                                   \
80 V_(ImmExtendShift, 12, 10, ExtractBits)                                      \
81 V_(ExtendMode, 15, 13, ExtractBits)                                          \
82                                                                              \
83 /* Move wide */                                                              \
84 V_(ImmMoveWide, 20, 5, ExtractBits)                                          \
85 V_(ShiftMoveWide, 22, 21, ExtractBits)                                       \
86                                                                              \
87 /* Logical immediate, bitfield and extract */                                \
88 V_(BitN, 22, 22, ExtractBits)                                                \
89 V_(ImmRotate, 21, 16, ExtractBits)                                           \
90 V_(ImmSetBits, 15, 10, ExtractBits)                                          \
91 V_(ImmR, 21, 16, ExtractBits)                                                \
92 V_(ImmS, 15, 10, ExtractBits)                                                \
93                                                                              \
94 /* Test and branch immediate */                                              \
95 V_(ImmTestBranch, 18, 5, ExtractSignedBits)                                  \
96 V_(ImmTestBranchBit40, 23, 19, ExtractBits)                                  \
97 V_(ImmTestBranchBit5, 31, 31, ExtractBits)                                   \
98                                                                              \
99 /* Conditionals */                                                           \
100 V_(Condition, 15, 12, ExtractBits)                                           \
101 V_(ConditionBranch, 3, 0, ExtractBits)                                       \
102 V_(Nzcv, 3, 0, ExtractBits)                                                  \
103 V_(ImmCondCmp, 20, 16, ExtractBits)                                          \
104 V_(ImmCondBranch, 23, 5, ExtractSignedBits)                                  \
105                                                                              \
106 /* Floating point */                                                         \
107 V_(FPType, 23, 22, ExtractBits)                                              \
108 V_(ImmFP, 20, 13, ExtractBits)                                               \
109 V_(FPScale, 15, 10, ExtractBits)                                             \
110                                                                              \
111 /* Load Store */                                                             \
112 V_(ImmLS, 20, 12, ExtractSignedBits)                                         \
113 V_(ImmLSUnsigned, 21, 10, ExtractBits)                                       \
114 V_(ImmLSPair, 21, 15, ExtractSignedBits)                                     \
115 V_(ImmShiftLS, 12, 12, ExtractBits)                                          \
116 V_(LSOpc, 23, 22, ExtractBits)                                               \
117 V_(LSVector, 26, 26, ExtractBits)                                            \
118 V_(LSSize, 31, 30, ExtractBits)                                              \
119 V_(ImmPrefetchOperation, 4, 0, ExtractBits)                                  \
120 V_(PrefetchHint, 4, 3, ExtractBits)                                          \
121 V_(PrefetchTarget, 2, 1, ExtractBits)                                        \
122 V_(PrefetchStream, 0, 0, ExtractBits)                                        \
123 V_(ImmLSPACHi, 22, 22, ExtractSignedBits)                                    \
124 V_(ImmLSPACLo, 20, 12, ExtractBits)                                          \
125                                                                              \
126 /* Other immediates */                                                       \
127 V_(ImmUncondBranch, 25, 0, ExtractSignedBits)                                \
128 V_(ImmCmpBranch, 23, 5, ExtractSignedBits)                                   \
129 V_(ImmLLiteral, 23, 5, ExtractSignedBits)                                    \
130 V_(ImmException, 20, 5, ExtractBits)                                         \
131 V_(ImmHint, 11, 5, ExtractBits)                                              \
132 V_(ImmBarrierDomain, 11, 10, ExtractBits)                                    \
133 V_(ImmBarrierType, 9, 8, ExtractBits)                                        \
134 V_(ImmUdf, 15, 0, ExtractBits)                                               \
135                                                                              \
136 /* System (MRS, MSR, SYS) */                                                 \
137 V_(ImmSystemRegister, 20, 5, ExtractBits)                                    \
138 V_(SysO0, 19, 19, ExtractBits)                                               \
139 V_(SysOp, 18, 5, ExtractBits)                                                \
140 V_(SysOp0, 20, 19, ExtractBits)                                              \
141 V_(SysOp1, 18, 16, ExtractBits)                                              \
142 V_(SysOp2, 7, 5, ExtractBits)                                                \
143 V_(CRn, 15, 12, ExtractBits)                                                 \
144 V_(CRm, 11, 8, ExtractBits)                                                  \
145 V_(ImmRMIFRotation, 20, 15, ExtractBits)                                     \
146                                                                              \
147 /* Load-/store-exclusive */                                                  \
148 V_(LdStXLoad, 22, 22, ExtractBits)                                           \
149 V_(LdStXNotExclusive, 23, 23, ExtractBits)                                   \
150 V_(LdStXAcquireRelease, 15, 15, ExtractBits)                                 \
151 V_(LdStXSizeLog2, 31, 30, ExtractBits)                                       \
152 V_(LdStXPair, 21, 21, ExtractBits)                                           \
153                                                                              \
154 /* NEON generic fields */                                                    \
155 V_(NEONQ, 30, 30, ExtractBits)                                               \
156 V_(NEONSize, 23, 22, ExtractBits)                                            \
157 V_(NEONLSSize, 11, 10, ExtractBits)                                          \
158 V_(NEONS, 12, 12, ExtractBits)                                               \
159 V_(NEONL, 21, 21, ExtractBits)                                               \
160 V_(NEONM, 20, 20, ExtractBits)                                               \
161 V_(NEONH, 11, 11, ExtractBits)                                               \
162 V_(ImmNEONExt, 14, 11, ExtractBits)                                          \
163 V_(ImmNEON5, 20, 16, ExtractBits)                                            \
164 V_(ImmNEON4, 14, 11, ExtractBits)                                            \
165                                                                              \
166 /* NEON extra fields */                                                      \
167 V_(ImmRotFcadd, 12, 12, ExtractBits)                                         \
168 V_(ImmRotFcmlaVec, 12, 11, ExtractBits)                                      \
169 V_(ImmRotFcmlaSca, 14, 13, ExtractBits)                                      \
170                                                                              \
171 /* NEON Modified Immediate fields */                                         \
172 V_(ImmNEONabc, 18, 16, ExtractBits)                                          \
173 V_(ImmNEONdefgh, 9, 5, ExtractBits)                                          \
174 V_(NEONModImmOp, 29, 29, ExtractBits)                                        \
175 V_(NEONCmode, 15, 12, ExtractBits)                                           \
176                                                                              \
177 /* NEON Shift Immediate fields */                                            \
178 V_(ImmNEONImmhImmb, 22, 16, ExtractBits)                                     \
179 V_(ImmNEONImmh, 22, 19, ExtractBits)                                         \
180 V_(ImmNEONImmb, 18, 16, ExtractBits)
181 // clang-format on
182 
183 #define SYSTEM_REGISTER_FIELDS_LIST(V_, M_) \
184   /* NZCV */                                \
185   V_(Flags, 31, 28, ExtractBits)            \
186   V_(N, 31, 31, ExtractBits)                \
187   V_(Z, 30, 30, ExtractBits)                \
188   V_(C, 29, 29, ExtractBits)                \
189   V_(V, 28, 28, ExtractBits)                \
190   M_(NZCV, Flags_mask)                      \
191   /* FPCR */                                \
192   V_(AHP, 26, 26, ExtractBits)              \
193   V_(DN, 25, 25, ExtractBits)               \
194   V_(FZ, 24, 24, ExtractBits)               \
195   V_(RMode, 23, 22, ExtractBits)            \
196   M_(FPCR, AHP_mask | DN_mask | FZ_mask | RMode_mask)
197 
198 // Fields offsets.
199 #define DECLARE_FIELDS_OFFSETS(Name, HighBit, LowBit, X) \
200   const int Name##_offset = LowBit;                      \
201   const int Name##_width = HighBit - LowBit + 1;         \
202   const uint32_t Name##_mask = ((1 << Name##_width) - 1) << LowBit;
203 #define NOTHING(A, B)
204 INSTRUCTION_FIELDS_LIST(DECLARE_FIELDS_OFFSETS)
205 SYSTEM_REGISTER_FIELDS_LIST(DECLARE_FIELDS_OFFSETS, NOTHING)
206 #undef NOTHING
207 #undef DECLARE_FIELDS_BITS
208 
209 // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), formed
210 // from ImmPCRelLo and ImmPCRelHi.
211 const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask;
212 
213 // Disable `clang-format` for the `enum`s below. We care about the manual
214 // formatting that `clang-format` would destroy.
215 // clang-format off
216 
217 // Condition codes.
218 enum Condition {
219   eq = 0,   // Z set            Equal.
220   ne = 1,   // Z clear          Not equal.
221   cs = 2,   // C set            Carry set.
222   cc = 3,   // C clear          Carry clear.
223   mi = 4,   // N set            Negative.
224   pl = 5,   // N clear          Positive or zero.
225   vs = 6,   // V set            Overflow.
226   vc = 7,   // V clear          No overflow.
227   hi = 8,   // C set, Z clear   Unsigned higher.
228   ls = 9,   // C clear or Z set Unsigned lower or same.
229   ge = 10,  // N == V           Greater or equal.
230   lt = 11,  // N != V           Less than.
231   gt = 12,  // Z clear, N == V  Greater than.
232   le = 13,  // Z set or N != V  Less then or equal
233   al = 14,  //                  Always.
234   nv = 15,  // Behaves as always/al.
235 
236   // Aliases.
237   hs = cs,  // C set            Unsigned higher or same.
238   lo = cc   // C clear          Unsigned lower.
239 };
240 
InvertCondition(Condition cond)241 inline Condition InvertCondition(Condition cond) {
242   // Conditions al and nv behave identically, as "always true". They can't be
243   // inverted, because there is no "always false" condition.
244   VIXL_ASSERT((cond != al) && (cond != nv));
245   return static_cast<Condition>(cond ^ 1);
246 }
247 
248 enum FPTrapFlags {
249   EnableTrap   = 1,
250   DisableTrap = 0
251 };
252 
253 enum FlagsUpdate {
254   SetFlags   = 1,
255   LeaveFlags = 0
256 };
257 
258 enum StatusFlags {
259   NoFlag    = 0,
260 
261   // Derive the flag combinations from the system register bit descriptions.
262   NFlag     = N_mask,
263   ZFlag     = Z_mask,
264   CFlag     = C_mask,
265   VFlag     = V_mask,
266   NZFlag    = NFlag | ZFlag,
267   NCFlag    = NFlag | CFlag,
268   NVFlag    = NFlag | VFlag,
269   ZCFlag    = ZFlag | CFlag,
270   ZVFlag    = ZFlag | VFlag,
271   CVFlag    = CFlag | VFlag,
272   NZCFlag   = NFlag | ZFlag | CFlag,
273   NZVFlag   = NFlag | ZFlag | VFlag,
274   NCVFlag   = NFlag | CFlag | VFlag,
275   ZCVFlag   = ZFlag | CFlag | VFlag,
276   NZCVFlag  = NFlag | ZFlag | CFlag | VFlag,
277 
278   // Floating-point comparison results.
279   FPEqualFlag       = ZCFlag,
280   FPLessThanFlag    = NFlag,
281   FPGreaterThanFlag = CFlag,
282   FPUnorderedFlag   = CVFlag
283 };
284 
285 enum Shift {
286   NO_SHIFT = -1,
287   LSL = 0x0,
288   LSR = 0x1,
289   ASR = 0x2,
290   ROR = 0x3,
291   MSL = 0x4
292 };
293 
294 enum Extend {
295   NO_EXTEND = -1,
296   UXTB      = 0,
297   UXTH      = 1,
298   UXTW      = 2,
299   UXTX      = 3,
300   SXTB      = 4,
301   SXTH      = 5,
302   SXTW      = 6,
303   SXTX      = 7
304 };
305 
306 enum SystemHint {
307   NOP    = 0,
308   YIELD  = 1,
309   WFE    = 2,
310   WFI    = 3,
311   SEV    = 4,
312   SEVL   = 5,
313   ESB    = 16,
314   CSDB   = 20,
315   BTI    = 32,
316   BTI_c  = 34,
317   BTI_j  = 36,
318   BTI_jc = 38
319 };
320 
321 enum BranchTargetIdentifier {
322   EmitBTI_none = NOP,
323   EmitBTI = BTI,
324   EmitBTI_c = BTI_c,
325   EmitBTI_j = BTI_j,
326   EmitBTI_jc = BTI_jc,
327 
328   // These correspond to the values of the CRm:op2 fields in the equivalent HINT
329   // instruction.
330   EmitPACIASP = 25,
331   EmitPACIBSP = 27
332 };
333 
334 enum BarrierDomain {
335   OuterShareable = 0,
336   NonShareable   = 1,
337   InnerShareable = 2,
338   FullSystem     = 3
339 };
340 
341 enum BarrierType {
342   BarrierOther  = 0,
343   BarrierReads  = 1,
344   BarrierWrites = 2,
345   BarrierAll    = 3
346 };
347 
348 enum PrefetchOperation {
349   PLDL1KEEP = 0x00,
350   PLDL1STRM = 0x01,
351   PLDL2KEEP = 0x02,
352   PLDL2STRM = 0x03,
353   PLDL3KEEP = 0x04,
354   PLDL3STRM = 0x05,
355 
356   PLIL1KEEP = 0x08,
357   PLIL1STRM = 0x09,
358   PLIL2KEEP = 0x0a,
359   PLIL2STRM = 0x0b,
360   PLIL3KEEP = 0x0c,
361   PLIL3STRM = 0x0d,
362 
363   PSTL1KEEP = 0x10,
364   PSTL1STRM = 0x11,
365   PSTL2KEEP = 0x12,
366   PSTL2STRM = 0x13,
367   PSTL3KEEP = 0x14,
368   PSTL3STRM = 0x15
369 };
370 
371 enum BType {
372   // Set when executing any instruction on a guarded page, except those cases
373   // listed below.
374   DefaultBType = 0,
375 
376   // Set when an indirect branch is taken from an unguarded page to a guarded
377   // page, or from a guarded page to ip0 or ip1 (x16 or x17), eg "br ip0".
378   BranchFromUnguardedOrToIP = 1,
379 
380   // Set when an indirect branch and link (call) is taken, eg. "blr x0".
381   BranchAndLink = 2,
382 
383   // Set when an indirect branch is taken from a guarded page to a register
384   // that is not ip0 or ip1 (x16 or x17), eg, "br x0".
385   BranchFromGuardedNotToIP = 3
386 };
387 
388 template<int op0, int op1, int crn, int crm, int op2>
389 class SystemRegisterEncoder {
390  public:
391   static const uint32_t value =
392       ((op0 << SysO0_offset) |
393        (op1 << SysOp1_offset) |
394        (crn << CRn_offset) |
395        (crm << CRm_offset) |
396        (op2 << SysOp2_offset)) >> ImmSystemRegister_offset;
397 };
398 
399 // System/special register names.
400 // This information is not encoded as one field but as the concatenation of
401 // multiple fields (Op0, Op1, Crn, Crm, Op2).
402 enum SystemRegister {
403   NZCV = SystemRegisterEncoder<3, 3, 4, 2, 0>::value,
404   FPCR = SystemRegisterEncoder<3, 3, 4, 4, 0>::value,
405   RNDR = SystemRegisterEncoder<3, 3, 2, 4, 0>::value,    // Random number.
406   RNDRRS = SystemRegisterEncoder<3, 3, 2, 4, 1>::value   // Reseeded random number.
407 };
408 
409 template<int op1, int crn, int crm, int op2>
410 class CacheOpEncoder {
411  public:
412   static const uint32_t value =
413       ((op1 << SysOp1_offset) |
414        (crn << CRn_offset) |
415        (crm << CRm_offset) |
416        (op2 << SysOp2_offset)) >> SysOp_offset;
417 };
418 
419 enum InstructionCacheOp {
420   IVAU = CacheOpEncoder<3, 7, 5, 1>::value
421 };
422 
423 enum DataCacheOp {
424   CVAC = CacheOpEncoder<3, 7, 10, 1>::value,
425   CVAU = CacheOpEncoder<3, 7, 11, 1>::value,
426   CVAP = CacheOpEncoder<3, 7, 12, 1>::value,
427   CVADP = CacheOpEncoder<3, 7, 13, 1>::value,
428   CIVAC = CacheOpEncoder<3, 7, 14, 1>::value,
429   ZVA = CacheOpEncoder<3, 7, 4, 1>::value
430 };
431 
432 // Instruction enumerations.
433 //
434 // These are the masks that define a class of instructions, and the list of
435 // instructions within each class. Each enumeration has a Fixed, FMask and
436 // Mask value.
437 //
438 // Fixed: The fixed bits in this instruction class.
439 // FMask: The mask used to extract the fixed bits in the class.
440 // Mask:  The mask used to identify the instructions within a class.
441 //
442 // The enumerations can be used like this:
443 //
444 // VIXL_ASSERT(instr->Mask(PCRelAddressingFMask) == PCRelAddressingFixed);
445 // switch(instr->Mask(PCRelAddressingMask)) {
446 //   case ADR:  Format("adr 'Xd, 'AddrPCRelByte"); break;
447 //   case ADRP: Format("adrp 'Xd, 'AddrPCRelPage"); break;
448 //   default:   printf("Unknown instruction\n");
449 // }
450 
451 
452 // Generic fields.
453 enum GenericInstrField {
454   SixtyFourBits        = 0x80000000,
455   ThirtyTwoBits        = 0x00000000,
456 
457   FPTypeMask           = 0x00C00000,
458   FP16                 = 0x00C00000,
459   FP32                 = 0x00000000,
460   FP64                 = 0x00400000
461 };
462 
463 enum NEONFormatField {
464   NEONFormatFieldMask   = 0x40C00000,
465   NEON_Q                = 0x40000000,
466   NEON_8B               = 0x00000000,
467   NEON_16B              = NEON_8B | NEON_Q,
468   NEON_4H               = 0x00400000,
469   NEON_8H               = NEON_4H | NEON_Q,
470   NEON_2S               = 0x00800000,
471   NEON_4S               = NEON_2S | NEON_Q,
472   NEON_1D               = 0x00C00000,
473   NEON_2D               = 0x00C00000 | NEON_Q
474 };
475 
476 enum NEONFPFormatField {
477   NEONFPFormatFieldMask = 0x40400000,
478   NEON_FP_4H            = FP16,
479   NEON_FP_2S            = FP32,
480   NEON_FP_8H            = FP16 | NEON_Q,
481   NEON_FP_4S            = FP32 | NEON_Q,
482   NEON_FP_2D            = FP64 | NEON_Q
483 };
484 
485 enum NEONLSFormatField {
486   NEONLSFormatFieldMask = 0x40000C00,
487   LS_NEON_8B            = 0x00000000,
488   LS_NEON_16B           = LS_NEON_8B | NEON_Q,
489   LS_NEON_4H            = 0x00000400,
490   LS_NEON_8H            = LS_NEON_4H | NEON_Q,
491   LS_NEON_2S            = 0x00000800,
492   LS_NEON_4S            = LS_NEON_2S | NEON_Q,
493   LS_NEON_1D            = 0x00000C00,
494   LS_NEON_2D            = LS_NEON_1D | NEON_Q
495 };
496 
497 enum NEONScalarFormatField {
498   NEONScalarFormatFieldMask = 0x00C00000,
499   NEONScalar                = 0x10000000,
500   NEON_B                    = 0x00000000,
501   NEON_H                    = 0x00400000,
502   NEON_S                    = 0x00800000,
503   NEON_D                    = 0x00C00000
504 };
505 
506 // PC relative addressing.
507 enum PCRelAddressingOp {
508   PCRelAddressingFixed = 0x10000000,
509   PCRelAddressingFMask = 0x1F000000,
510   PCRelAddressingMask  = 0x9F000000,
511   ADR                  = PCRelAddressingFixed | 0x00000000,
512   ADRP                 = PCRelAddressingFixed | 0x80000000
513 };
514 
515 // Add/sub (immediate, shifted and extended.)
516 const int kSFOffset = 31;
517 enum AddSubOp {
518   AddSubOpMask      = 0x60000000,
519   AddSubSetFlagsBit = 0x20000000,
520   ADD               = 0x00000000,
521   ADDS              = ADD | AddSubSetFlagsBit,
522   SUB               = 0x40000000,
523   SUBS              = SUB | AddSubSetFlagsBit
524 };
525 
526 #define ADD_SUB_OP_LIST(V)  \
527   V(ADD),                   \
528   V(ADDS),                  \
529   V(SUB),                   \
530   V(SUBS)
531 
532 enum AddSubImmediateOp {
533   AddSubImmediateFixed = 0x11000000,
534   AddSubImmediateFMask = 0x1F000000,
535   AddSubImmediateMask  = 0xFF000000,
536   #define ADD_SUB_IMMEDIATE(A)           \
537   A##_w_imm = AddSubImmediateFixed | A,  \
538   A##_x_imm = AddSubImmediateFixed | A | SixtyFourBits
539   ADD_SUB_OP_LIST(ADD_SUB_IMMEDIATE)
540   #undef ADD_SUB_IMMEDIATE
541 };
542 
543 enum AddSubShiftedOp {
544   AddSubShiftedFixed   = 0x0B000000,
545   AddSubShiftedFMask   = 0x1F200000,
546   AddSubShiftedMask    = 0xFF200000,
547   #define ADD_SUB_SHIFTED(A)             \
548   A##_w_shift = AddSubShiftedFixed | A,  \
549   A##_x_shift = AddSubShiftedFixed | A | SixtyFourBits
550   ADD_SUB_OP_LIST(ADD_SUB_SHIFTED)
551   #undef ADD_SUB_SHIFTED
552 };
553 
554 enum AddSubExtendedOp {
555   AddSubExtendedFixed  = 0x0B200000,
556   AddSubExtendedFMask  = 0x1F200000,
557   AddSubExtendedMask   = 0xFFE00000,
558   #define ADD_SUB_EXTENDED(A)           \
559   A##_w_ext = AddSubExtendedFixed | A,  \
560   A##_x_ext = AddSubExtendedFixed | A | SixtyFourBits
561   ADD_SUB_OP_LIST(ADD_SUB_EXTENDED)
562   #undef ADD_SUB_EXTENDED
563 };
564 
565 // Add/sub with carry.
566 enum AddSubWithCarryOp {
567   AddSubWithCarryFixed = 0x1A000000,
568   AddSubWithCarryFMask = 0x1FE00000,
569   AddSubWithCarryMask  = 0xFFE0FC00,
570   ADC_w                = AddSubWithCarryFixed | ADD,
571   ADC_x                = AddSubWithCarryFixed | ADD | SixtyFourBits,
572   ADC                  = ADC_w,
573   ADCS_w               = AddSubWithCarryFixed | ADDS,
574   ADCS_x               = AddSubWithCarryFixed | ADDS | SixtyFourBits,
575   SBC_w                = AddSubWithCarryFixed | SUB,
576   SBC_x                = AddSubWithCarryFixed | SUB | SixtyFourBits,
577   SBC                  = SBC_w,
578   SBCS_w               = AddSubWithCarryFixed | SUBS,
579   SBCS_x               = AddSubWithCarryFixed | SUBS | SixtyFourBits
580 };
581 
582 // Rotate right into flags.
583 enum RotateRightIntoFlagsOp {
584   RotateRightIntoFlagsFixed = 0x1A000400,
585   RotateRightIntoFlagsFMask = 0x1FE07C00,
586   RotateRightIntoFlagsMask  = 0xFFE07C10,
587   RMIF                      = RotateRightIntoFlagsFixed | 0xA0000000
588 };
589 
590 // Evaluate into flags.
591 enum EvaluateIntoFlagsOp {
592   EvaluateIntoFlagsFixed = 0x1A000800,
593   EvaluateIntoFlagsFMask = 0x1FE03C00,
594   EvaluateIntoFlagsMask  = 0xFFE07C1F,
595   SETF8                  = EvaluateIntoFlagsFixed | 0x2000000D,
596   SETF16                 = EvaluateIntoFlagsFixed | 0x2000400D
597 };
598 
599 
600 // Logical (immediate and shifted register).
601 enum LogicalOp {
602   LogicalOpMask = 0x60200000,
603   NOT   = 0x00200000,
604   AND   = 0x00000000,
605   BIC   = AND | NOT,
606   ORR   = 0x20000000,
607   ORN   = ORR | NOT,
608   EOR   = 0x40000000,
609   EON   = EOR | NOT,
610   ANDS  = 0x60000000,
611   BICS  = ANDS | NOT
612 };
613 
614 // Logical immediate.
615 enum LogicalImmediateOp {
616   LogicalImmediateFixed = 0x12000000,
617   LogicalImmediateFMask = 0x1F800000,
618   LogicalImmediateMask  = 0xFF800000,
619   AND_w_imm   = LogicalImmediateFixed | AND,
620   AND_x_imm   = LogicalImmediateFixed | AND | SixtyFourBits,
621   ORR_w_imm   = LogicalImmediateFixed | ORR,
622   ORR_x_imm   = LogicalImmediateFixed | ORR | SixtyFourBits,
623   EOR_w_imm   = LogicalImmediateFixed | EOR,
624   EOR_x_imm   = LogicalImmediateFixed | EOR | SixtyFourBits,
625   ANDS_w_imm  = LogicalImmediateFixed | ANDS,
626   ANDS_x_imm  = LogicalImmediateFixed | ANDS | SixtyFourBits
627 };
628 
629 // Logical shifted register.
630 enum LogicalShiftedOp {
631   LogicalShiftedFixed = 0x0A000000,
632   LogicalShiftedFMask = 0x1F000000,
633   LogicalShiftedMask  = 0xFF200000,
634   AND_w               = LogicalShiftedFixed | AND,
635   AND_x               = LogicalShiftedFixed | AND | SixtyFourBits,
636   AND_shift           = AND_w,
637   BIC_w               = LogicalShiftedFixed | BIC,
638   BIC_x               = LogicalShiftedFixed | BIC | SixtyFourBits,
639   BIC_shift           = BIC_w,
640   ORR_w               = LogicalShiftedFixed | ORR,
641   ORR_x               = LogicalShiftedFixed | ORR | SixtyFourBits,
642   ORR_shift           = ORR_w,
643   ORN_w               = LogicalShiftedFixed | ORN,
644   ORN_x               = LogicalShiftedFixed | ORN | SixtyFourBits,
645   ORN_shift           = ORN_w,
646   EOR_w               = LogicalShiftedFixed | EOR,
647   EOR_x               = LogicalShiftedFixed | EOR | SixtyFourBits,
648   EOR_shift           = EOR_w,
649   EON_w               = LogicalShiftedFixed | EON,
650   EON_x               = LogicalShiftedFixed | EON | SixtyFourBits,
651   EON_shift           = EON_w,
652   ANDS_w              = LogicalShiftedFixed | ANDS,
653   ANDS_x              = LogicalShiftedFixed | ANDS | SixtyFourBits,
654   ANDS_shift          = ANDS_w,
655   BICS_w              = LogicalShiftedFixed | BICS,
656   BICS_x              = LogicalShiftedFixed | BICS | SixtyFourBits,
657   BICS_shift          = BICS_w
658 };
659 
660 // Move wide immediate.
661 enum MoveWideImmediateOp {
662   MoveWideImmediateFixed = 0x12800000,
663   MoveWideImmediateFMask = 0x1F800000,
664   MoveWideImmediateMask  = 0xFF800000,
665   MOVN                   = 0x00000000,
666   MOVZ                   = 0x40000000,
667   MOVK                   = 0x60000000,
668   MOVN_w                 = MoveWideImmediateFixed | MOVN,
669   MOVN_x                 = MoveWideImmediateFixed | MOVN | SixtyFourBits,
670   MOVZ_w                 = MoveWideImmediateFixed | MOVZ,
671   MOVZ_x                 = MoveWideImmediateFixed | MOVZ | SixtyFourBits,
672   MOVK_w                 = MoveWideImmediateFixed | MOVK,
673   MOVK_x                 = MoveWideImmediateFixed | MOVK | SixtyFourBits
674 };
675 
676 // Bitfield.
677 const int kBitfieldNOffset = 22;
678 enum BitfieldOp {
679   BitfieldFixed = 0x13000000,
680   BitfieldFMask = 0x1F800000,
681   BitfieldMask  = 0xFF800000,
682   SBFM_w        = BitfieldFixed | 0x00000000,
683   SBFM_x        = BitfieldFixed | 0x80000000,
684   SBFM          = SBFM_w,
685   BFM_w         = BitfieldFixed | 0x20000000,
686   BFM_x         = BitfieldFixed | 0xA0000000,
687   BFM           = BFM_w,
688   UBFM_w        = BitfieldFixed | 0x40000000,
689   UBFM_x        = BitfieldFixed | 0xC0000000,
690   UBFM          = UBFM_w
691   // Bitfield N field.
692 };
693 
694 // Extract.
695 enum ExtractOp {
696   ExtractFixed = 0x13800000,
697   ExtractFMask = 0x1F800000,
698   ExtractMask  = 0xFFA00000,
699   EXTR_w       = ExtractFixed | 0x00000000,
700   EXTR_x       = ExtractFixed | 0x80000000,
701   EXTR         = EXTR_w
702 };
703 
704 // Unconditional branch.
705 enum UnconditionalBranchOp {
706   UnconditionalBranchFixed = 0x14000000,
707   UnconditionalBranchFMask = 0x7C000000,
708   UnconditionalBranchMask  = 0xFC000000,
709   B                        = UnconditionalBranchFixed | 0x00000000,
710   BL                       = UnconditionalBranchFixed | 0x80000000
711 };
712 
713 // Unconditional branch to register.
714 enum UnconditionalBranchToRegisterOp {
715   UnconditionalBranchToRegisterFixed = 0xD6000000,
716   UnconditionalBranchToRegisterFMask = 0xFE000000,
717   UnconditionalBranchToRegisterMask  = 0xFFFFFC00,
718   BR      = UnconditionalBranchToRegisterFixed | 0x001F0000,
719   BLR     = UnconditionalBranchToRegisterFixed | 0x003F0000,
720   RET     = UnconditionalBranchToRegisterFixed | 0x005F0000,
721 
722   BRAAZ  = UnconditionalBranchToRegisterFixed | 0x001F0800,
723   BRABZ  = UnconditionalBranchToRegisterFixed | 0x001F0C00,
724   BLRAAZ = UnconditionalBranchToRegisterFixed | 0x003F0800,
725   BLRABZ = UnconditionalBranchToRegisterFixed | 0x003F0C00,
726   RETAA  = UnconditionalBranchToRegisterFixed | 0x005F0800,
727   RETAB  = UnconditionalBranchToRegisterFixed | 0x005F0C00,
728   BRAA   = UnconditionalBranchToRegisterFixed | 0x011F0800,
729   BRAB   = UnconditionalBranchToRegisterFixed | 0x011F0C00,
730   BLRAA  = UnconditionalBranchToRegisterFixed | 0x013F0800,
731   BLRAB  = UnconditionalBranchToRegisterFixed | 0x013F0C00
732 };
733 
734 // Compare and branch.
735 enum CompareBranchOp {
736   CompareBranchFixed = 0x34000000,
737   CompareBranchFMask = 0x7E000000,
738   CompareBranchMask  = 0xFF000000,
739   CBZ_w              = CompareBranchFixed | 0x00000000,
740   CBZ_x              = CompareBranchFixed | 0x80000000,
741   CBZ                = CBZ_w,
742   CBNZ_w             = CompareBranchFixed | 0x01000000,
743   CBNZ_x             = CompareBranchFixed | 0x81000000,
744   CBNZ               = CBNZ_w
745 };
746 
747 // Test and branch.
748 enum TestBranchOp {
749   TestBranchFixed = 0x36000000,
750   TestBranchFMask = 0x7E000000,
751   TestBranchMask  = 0x7F000000,
752   TBZ             = TestBranchFixed | 0x00000000,
753   TBNZ            = TestBranchFixed | 0x01000000
754 };
755 
756 // Conditional branch.
757 enum ConditionalBranchOp {
758   ConditionalBranchFixed = 0x54000000,
759   ConditionalBranchFMask = 0xFE000000,
760   ConditionalBranchMask  = 0xFF000010,
761   B_cond                 = ConditionalBranchFixed | 0x00000000
762 };
763 
764 // System.
765 // System instruction encoding is complicated because some instructions use op
766 // and CR fields to encode parameters. To handle this cleanly, the system
767 // instructions are split into more than one enum.
768 
769 enum SystemOp {
770   SystemFixed = 0xD5000000,
771   SystemFMask = 0xFFC00000
772 };
773 
774 enum SystemSysRegOp {
775   SystemSysRegFixed = 0xD5100000,
776   SystemSysRegFMask = 0xFFD00000,
777   SystemSysRegMask  = 0xFFF00000,
778   MRS               = SystemSysRegFixed | 0x00200000,
779   MSR               = SystemSysRegFixed | 0x00000000
780 };
781 
782 enum SystemPStateOp {
783   SystemPStateFixed = 0xD5004000,
784   SystemPStateFMask = 0xFFF8F000,
785   SystemPStateMask  = 0xFFFFF0FF,
786   CFINV             = SystemPStateFixed | 0x0000001F,
787   XAFLAG            = SystemPStateFixed | 0x0000003F,
788   AXFLAG            = SystemPStateFixed | 0x0000005F
789 };
790 
791 enum SystemHintOp {
792   SystemHintFixed = 0xD503201F,
793   SystemHintFMask = 0xFFFFF01F,
794   SystemHintMask  = 0xFFFFF01F,
795   HINT            = SystemHintFixed | 0x00000000
796 };
797 
798 enum SystemSysOp {
799   SystemSysFixed  = 0xD5080000,
800   SystemSysFMask  = 0xFFF80000,
801   SystemSysMask   = 0xFFF80000,
802   SYS             = SystemSysFixed | 0x00000000
803 };
804 
805 // Exception.
806 enum ExceptionOp {
807   ExceptionFixed = 0xD4000000,
808   ExceptionFMask = 0xFF000000,
809   ExceptionMask  = 0xFFE0001F,
810   HLT            = ExceptionFixed | 0x00400000,
811   BRK            = ExceptionFixed | 0x00200000,
812   SVC            = ExceptionFixed | 0x00000001,
813   HVC            = ExceptionFixed | 0x00000002,
814   SMC            = ExceptionFixed | 0x00000003,
815   DCPS1          = ExceptionFixed | 0x00A00001,
816   DCPS2          = ExceptionFixed | 0x00A00002,
817   DCPS3          = ExceptionFixed | 0x00A00003
818 };
819 
820 enum MemBarrierOp {
821   MemBarrierFixed = 0xD503309F,
822   MemBarrierFMask = 0xFFFFF09F,
823   MemBarrierMask  = 0xFFFFF0FF,
824   DSB             = MemBarrierFixed | 0x00000000,
825   DMB             = MemBarrierFixed | 0x00000020,
826   ISB             = MemBarrierFixed | 0x00000040
827 };
828 
829 enum SystemExclusiveMonitorOp {
830   SystemExclusiveMonitorFixed = 0xD503305F,
831   SystemExclusiveMonitorFMask = 0xFFFFF0FF,
832   SystemExclusiveMonitorMask  = 0xFFFFF0FF,
833   CLREX                       = SystemExclusiveMonitorFixed
834 };
835 
836 enum SystemPAuthOp {
837   SystemPAuthFixed = 0xD503211F,
838   SystemPAuthFMask = 0xFFFFFD1F,
839   SystemPAuthMask  = 0xFFFFFFFF,
840   PACIA1716 = SystemPAuthFixed | 0x00000100,
841   PACIB1716 = SystemPAuthFixed | 0x00000140,
842   AUTIA1716 = SystemPAuthFixed | 0x00000180,
843   AUTIB1716 = SystemPAuthFixed | 0x000001C0,
844   PACIAZ    = SystemPAuthFixed | 0x00000300,
845   PACIASP   = SystemPAuthFixed | 0x00000320,
846   PACIBZ    = SystemPAuthFixed | 0x00000340,
847   PACIBSP   = SystemPAuthFixed | 0x00000360,
848   AUTIAZ    = SystemPAuthFixed | 0x00000380,
849   AUTIASP   = SystemPAuthFixed | 0x000003A0,
850   AUTIBZ    = SystemPAuthFixed | 0x000003C0,
851   AUTIBSP   = SystemPAuthFixed | 0x000003E0,
852 
853   // XPACLRI has the same fixed mask as System Hints and needs to be handled
854   // differently.
855   XPACLRI   = 0xD50320FF
856 };
857 
858 // Any load or store.
859 enum LoadStoreAnyOp {
860   LoadStoreAnyFMask = 0x0a000000,
861   LoadStoreAnyFixed = 0x08000000
862 };
863 
864 // Any load pair or store pair.
865 enum LoadStorePairAnyOp {
866   LoadStorePairAnyFMask = 0x3a000000,
867   LoadStorePairAnyFixed = 0x28000000
868 };
869 
870 #define LOAD_STORE_PAIR_OP_LIST(V)  \
871   V(STP, w,   0x00000000),          \
872   V(LDP, w,   0x00400000),          \
873   V(LDPSW, x, 0x40400000),          \
874   V(STP, x,   0x80000000),          \
875   V(LDP, x,   0x80400000),          \
876   V(STP, s,   0x04000000),          \
877   V(LDP, s,   0x04400000),          \
878   V(STP, d,   0x44000000),          \
879   V(LDP, d,   0x44400000),          \
880   V(STP, q,   0x84000000),          \
881   V(LDP, q,   0x84400000)
882 
883 // Load/store pair (post, pre and offset.)
884 enum LoadStorePairOp {
885   LoadStorePairMask = 0xC4400000,
886   LoadStorePairLBit = 1 << 22,
887   #define LOAD_STORE_PAIR(A, B, C) \
888   A##_##B = C
889   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR)
890   #undef LOAD_STORE_PAIR
891 };
892 
893 enum LoadStorePairPostIndexOp {
894   LoadStorePairPostIndexFixed = 0x28800000,
895   LoadStorePairPostIndexFMask = 0x3B800000,
896   LoadStorePairPostIndexMask  = 0xFFC00000,
897   #define LOAD_STORE_PAIR_POST_INDEX(A, B, C)  \
898   A##_##B##_post = LoadStorePairPostIndexFixed | A##_##B
899   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_POST_INDEX)
900   #undef LOAD_STORE_PAIR_POST_INDEX
901 };
902 
903 enum LoadStorePairPreIndexOp {
904   LoadStorePairPreIndexFixed = 0x29800000,
905   LoadStorePairPreIndexFMask = 0x3B800000,
906   LoadStorePairPreIndexMask  = 0xFFC00000,
907   #define LOAD_STORE_PAIR_PRE_INDEX(A, B, C)  \
908   A##_##B##_pre = LoadStorePairPreIndexFixed | A##_##B
909   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_PRE_INDEX)
910   #undef LOAD_STORE_PAIR_PRE_INDEX
911 };
912 
913 enum LoadStorePairOffsetOp {
914   LoadStorePairOffsetFixed = 0x29000000,
915   LoadStorePairOffsetFMask = 0x3B800000,
916   LoadStorePairOffsetMask  = 0xFFC00000,
917   #define LOAD_STORE_PAIR_OFFSET(A, B, C)  \
918   A##_##B##_off = LoadStorePairOffsetFixed | A##_##B
919   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_OFFSET)
920   #undef LOAD_STORE_PAIR_OFFSET
921 };
922 
923 enum LoadStorePairNonTemporalOp {
924   LoadStorePairNonTemporalFixed = 0x28000000,
925   LoadStorePairNonTemporalFMask = 0x3B800000,
926   LoadStorePairNonTemporalMask  = 0xFFC00000,
927   LoadStorePairNonTemporalLBit = 1 << 22,
928   STNP_w = LoadStorePairNonTemporalFixed | STP_w,
929   LDNP_w = LoadStorePairNonTemporalFixed | LDP_w,
930   STNP_x = LoadStorePairNonTemporalFixed | STP_x,
931   LDNP_x = LoadStorePairNonTemporalFixed | LDP_x,
932   STNP_s = LoadStorePairNonTemporalFixed | STP_s,
933   LDNP_s = LoadStorePairNonTemporalFixed | LDP_s,
934   STNP_d = LoadStorePairNonTemporalFixed | STP_d,
935   LDNP_d = LoadStorePairNonTemporalFixed | LDP_d,
936   STNP_q = LoadStorePairNonTemporalFixed | STP_q,
937   LDNP_q = LoadStorePairNonTemporalFixed | LDP_q
938 };
939 
940 // Load with pointer authentication.
941 enum LoadStorePACOp {
942   LoadStorePACFixed  = 0xF8200400,
943   LoadStorePACFMask  = 0xFF200400,
944   LoadStorePACMask   = 0xFFA00C00,
945   LoadStorePACPreBit = 0x00000800,
946   LDRAA     = LoadStorePACFixed | 0x00000000,
947   LDRAA_pre = LoadStorePACPreBit | LDRAA,
948   LDRAB     = LoadStorePACFixed | 0x00800000,
949   LDRAB_pre = LoadStorePACPreBit | LDRAB
950 };
951 
952 // Load literal.
953 enum LoadLiteralOp {
954   LoadLiteralFixed = 0x18000000,
955   LoadLiteralFMask = 0x3B000000,
956   LoadLiteralMask  = 0xFF000000,
957   LDR_w_lit        = LoadLiteralFixed | 0x00000000,
958   LDR_x_lit        = LoadLiteralFixed | 0x40000000,
959   LDRSW_x_lit      = LoadLiteralFixed | 0x80000000,
960   PRFM_lit         = LoadLiteralFixed | 0xC0000000,
961   LDR_s_lit        = LoadLiteralFixed | 0x04000000,
962   LDR_d_lit        = LoadLiteralFixed | 0x44000000,
963   LDR_q_lit        = LoadLiteralFixed | 0x84000000
964 };
965 
966 #define LOAD_STORE_OP_LIST(V)     \
967   V(ST, RB, w,  0x00000000),  \
968   V(ST, RH, w,  0x40000000),  \
969   V(ST, R, w,   0x80000000),  \
970   V(ST, R, x,   0xC0000000),  \
971   V(LD, RB, w,  0x00400000),  \
972   V(LD, RH, w,  0x40400000),  \
973   V(LD, R, w,   0x80400000),  \
974   V(LD, R, x,   0xC0400000),  \
975   V(LD, RSB, x, 0x00800000),  \
976   V(LD, RSH, x, 0x40800000),  \
977   V(LD, RSW, x, 0x80800000),  \
978   V(LD, RSB, w, 0x00C00000),  \
979   V(LD, RSH, w, 0x40C00000),  \
980   V(ST, R, b,   0x04000000),  \
981   V(ST, R, h,   0x44000000),  \
982   V(ST, R, s,   0x84000000),  \
983   V(ST, R, d,   0xC4000000),  \
984   V(ST, R, q,   0x04800000),  \
985   V(LD, R, b,   0x04400000),  \
986   V(LD, R, h,   0x44400000),  \
987   V(LD, R, s,   0x84400000),  \
988   V(LD, R, d,   0xC4400000),  \
989   V(LD, R, q,   0x04C00000)
990 
991 // Load/store (post, pre, offset and unsigned.)
992 enum LoadStoreOp {
993   LoadStoreMask = 0xC4C00000,
994   LoadStoreVMask = 0x04000000,
995   #define LOAD_STORE(A, B, C, D)  \
996   A##B##_##C = D
997   LOAD_STORE_OP_LIST(LOAD_STORE),
998   #undef LOAD_STORE
999   PRFM = 0xC0800000
1000 };
1001 
1002 // Load/store unscaled offset.
1003 enum LoadStoreUnscaledOffsetOp {
1004   LoadStoreUnscaledOffsetFixed = 0x38000000,
1005   LoadStoreUnscaledOffsetFMask = 0x3B200C00,
1006   LoadStoreUnscaledOffsetMask  = 0xFFE00C00,
1007   PRFUM                        = LoadStoreUnscaledOffsetFixed | PRFM,
1008   #define LOAD_STORE_UNSCALED(A, B, C, D)  \
1009   A##U##B##_##C = LoadStoreUnscaledOffsetFixed | D
1010   LOAD_STORE_OP_LIST(LOAD_STORE_UNSCALED)
1011   #undef LOAD_STORE_UNSCALED
1012 };
1013 
1014 // Load/store post index.
1015 enum LoadStorePostIndex {
1016   LoadStorePostIndexFixed = 0x38000400,
1017   LoadStorePostIndexFMask = 0x3B200C00,
1018   LoadStorePostIndexMask  = 0xFFE00C00,
1019   #define LOAD_STORE_POST_INDEX(A, B, C, D)  \
1020   A##B##_##C##_post = LoadStorePostIndexFixed | D
1021   LOAD_STORE_OP_LIST(LOAD_STORE_POST_INDEX)
1022   #undef LOAD_STORE_POST_INDEX
1023 };
1024 
1025 // Load/store pre index.
1026 enum LoadStorePreIndex {
1027   LoadStorePreIndexFixed = 0x38000C00,
1028   LoadStorePreIndexFMask = 0x3B200C00,
1029   LoadStorePreIndexMask  = 0xFFE00C00,
1030   #define LOAD_STORE_PRE_INDEX(A, B, C, D)  \
1031   A##B##_##C##_pre = LoadStorePreIndexFixed | D
1032   LOAD_STORE_OP_LIST(LOAD_STORE_PRE_INDEX)
1033   #undef LOAD_STORE_PRE_INDEX
1034 };
1035 
1036 // Load/store unsigned offset.
1037 enum LoadStoreUnsignedOffset {
1038   LoadStoreUnsignedOffsetFixed = 0x39000000,
1039   LoadStoreUnsignedOffsetFMask = 0x3B000000,
1040   LoadStoreUnsignedOffsetMask  = 0xFFC00000,
1041   PRFM_unsigned                = LoadStoreUnsignedOffsetFixed | PRFM,
1042   #define LOAD_STORE_UNSIGNED_OFFSET(A, B, C, D) \
1043   A##B##_##C##_unsigned = LoadStoreUnsignedOffsetFixed | D
1044   LOAD_STORE_OP_LIST(LOAD_STORE_UNSIGNED_OFFSET)
1045   #undef LOAD_STORE_UNSIGNED_OFFSET
1046 };
1047 
1048 // Load/store register offset.
1049 enum LoadStoreRegisterOffset {
1050   LoadStoreRegisterOffsetFixed = 0x38200800,
1051   LoadStoreRegisterOffsetFMask = 0x3B200C00,
1052   LoadStoreRegisterOffsetMask  = 0xFFE00C00,
1053   PRFM_reg                     = LoadStoreRegisterOffsetFixed | PRFM,
1054   #define LOAD_STORE_REGISTER_OFFSET(A, B, C, D) \
1055   A##B##_##C##_reg = LoadStoreRegisterOffsetFixed | D
1056   LOAD_STORE_OP_LIST(LOAD_STORE_REGISTER_OFFSET)
1057   #undef LOAD_STORE_REGISTER_OFFSET
1058 };
1059 
1060 enum LoadStoreExclusive {
1061   LoadStoreExclusiveFixed = 0x08000000,
1062   LoadStoreExclusiveFMask = 0x3F000000,
1063   LoadStoreExclusiveMask  = 0xFFE08000,
1064   STXRB_w  = LoadStoreExclusiveFixed | 0x00000000,
1065   STXRH_w  = LoadStoreExclusiveFixed | 0x40000000,
1066   STXR_w   = LoadStoreExclusiveFixed | 0x80000000,
1067   STXR_x   = LoadStoreExclusiveFixed | 0xC0000000,
1068   LDXRB_w  = LoadStoreExclusiveFixed | 0x00400000,
1069   LDXRH_w  = LoadStoreExclusiveFixed | 0x40400000,
1070   LDXR_w   = LoadStoreExclusiveFixed | 0x80400000,
1071   LDXR_x   = LoadStoreExclusiveFixed | 0xC0400000,
1072   STXP_w   = LoadStoreExclusiveFixed | 0x80200000,
1073   STXP_x   = LoadStoreExclusiveFixed | 0xC0200000,
1074   LDXP_w   = LoadStoreExclusiveFixed | 0x80600000,
1075   LDXP_x   = LoadStoreExclusiveFixed | 0xC0600000,
1076   STLXRB_w = LoadStoreExclusiveFixed | 0x00008000,
1077   STLXRH_w = LoadStoreExclusiveFixed | 0x40008000,
1078   STLXR_w  = LoadStoreExclusiveFixed | 0x80008000,
1079   STLXR_x  = LoadStoreExclusiveFixed | 0xC0008000,
1080   LDAXRB_w = LoadStoreExclusiveFixed | 0x00408000,
1081   LDAXRH_w = LoadStoreExclusiveFixed | 0x40408000,
1082   LDAXR_w  = LoadStoreExclusiveFixed | 0x80408000,
1083   LDAXR_x  = LoadStoreExclusiveFixed | 0xC0408000,
1084   STLXP_w  = LoadStoreExclusiveFixed | 0x80208000,
1085   STLXP_x  = LoadStoreExclusiveFixed | 0xC0208000,
1086   LDAXP_w  = LoadStoreExclusiveFixed | 0x80608000,
1087   LDAXP_x  = LoadStoreExclusiveFixed | 0xC0608000,
1088   STLRB_w  = LoadStoreExclusiveFixed | 0x00808000,
1089   STLRH_w  = LoadStoreExclusiveFixed | 0x40808000,
1090   STLR_w   = LoadStoreExclusiveFixed | 0x80808000,
1091   STLR_x   = LoadStoreExclusiveFixed | 0xC0808000,
1092   LDARB_w  = LoadStoreExclusiveFixed | 0x00C08000,
1093   LDARH_w  = LoadStoreExclusiveFixed | 0x40C08000,
1094   LDAR_w   = LoadStoreExclusiveFixed | 0x80C08000,
1095   LDAR_x   = LoadStoreExclusiveFixed | 0xC0C08000,
1096 
1097   // v8.1 Load/store LORegion ops
1098   STLLRB   = LoadStoreExclusiveFixed | 0x00800000,
1099   LDLARB   = LoadStoreExclusiveFixed | 0x00C00000,
1100   STLLRH   = LoadStoreExclusiveFixed | 0x40800000,
1101   LDLARH   = LoadStoreExclusiveFixed | 0x40C00000,
1102   STLLR_w  = LoadStoreExclusiveFixed | 0x80800000,
1103   LDLAR_w  = LoadStoreExclusiveFixed | 0x80C00000,
1104   STLLR_x  = LoadStoreExclusiveFixed | 0xC0800000,
1105   LDLAR_x  = LoadStoreExclusiveFixed | 0xC0C00000,
1106 
1107   // v8.1 Load/store exclusive ops
1108   LSEBit_l  = 0x00400000,
1109   LSEBit_o0 = 0x00008000,
1110   LSEBit_sz = 0x40000000,
1111   CASFixed  = LoadStoreExclusiveFixed | 0x80A00000,
1112   CASBFixed = LoadStoreExclusiveFixed | 0x00A00000,
1113   CASHFixed = LoadStoreExclusiveFixed | 0x40A00000,
1114   CASPFixed = LoadStoreExclusiveFixed | 0x00200000,
1115   CAS_w    = CASFixed,
1116   CAS_x    = CASFixed | LSEBit_sz,
1117   CASA_w   = CASFixed | LSEBit_l,
1118   CASA_x   = CASFixed | LSEBit_l | LSEBit_sz,
1119   CASL_w   = CASFixed | LSEBit_o0,
1120   CASL_x   = CASFixed | LSEBit_o0 | LSEBit_sz,
1121   CASAL_w  = CASFixed | LSEBit_l | LSEBit_o0,
1122   CASAL_x  = CASFixed | LSEBit_l | LSEBit_o0 | LSEBit_sz,
1123   CASB     = CASBFixed,
1124   CASAB    = CASBFixed | LSEBit_l,
1125   CASLB    = CASBFixed | LSEBit_o0,
1126   CASALB   = CASBFixed | LSEBit_l | LSEBit_o0,
1127   CASH     = CASHFixed,
1128   CASAH    = CASHFixed | LSEBit_l,
1129   CASLH    = CASHFixed | LSEBit_o0,
1130   CASALH   = CASHFixed | LSEBit_l | LSEBit_o0,
1131   CASP_w   = CASPFixed,
1132   CASP_x   = CASPFixed | LSEBit_sz,
1133   CASPA_w  = CASPFixed | LSEBit_l,
1134   CASPA_x  = CASPFixed | LSEBit_l | LSEBit_sz,
1135   CASPL_w  = CASPFixed | LSEBit_o0,
1136   CASPL_x  = CASPFixed | LSEBit_o0 | LSEBit_sz,
1137   CASPAL_w = CASPFixed | LSEBit_l | LSEBit_o0,
1138   CASPAL_x = CASPFixed | LSEBit_l | LSEBit_o0 | LSEBit_sz
1139 };
1140 
1141 // Load/store RCpc unscaled offset.
1142 enum LoadStoreRCpcUnscaledOffsetOp {
1143   LoadStoreRCpcUnscaledOffsetFixed = 0x19000000,
1144   LoadStoreRCpcUnscaledOffsetFMask = 0x3F200C00,
1145   LoadStoreRCpcUnscaledOffsetMask  = 0xFFE00C00,
1146   STLURB     = LoadStoreRCpcUnscaledOffsetFixed | 0x00000000,
1147   LDAPURB    = LoadStoreRCpcUnscaledOffsetFixed | 0x00400000,
1148   LDAPURSB_x = LoadStoreRCpcUnscaledOffsetFixed | 0x00800000,
1149   LDAPURSB_w = LoadStoreRCpcUnscaledOffsetFixed | 0x00C00000,
1150   STLURH     = LoadStoreRCpcUnscaledOffsetFixed | 0x40000000,
1151   LDAPURH    = LoadStoreRCpcUnscaledOffsetFixed | 0x40400000,
1152   LDAPURSH_x = LoadStoreRCpcUnscaledOffsetFixed | 0x40800000,
1153   LDAPURSH_w = LoadStoreRCpcUnscaledOffsetFixed | 0x40C00000,
1154   STLUR_w    = LoadStoreRCpcUnscaledOffsetFixed | 0x80000000,
1155   LDAPUR_w   = LoadStoreRCpcUnscaledOffsetFixed | 0x80400000,
1156   LDAPURSW   = LoadStoreRCpcUnscaledOffsetFixed | 0x80800000,
1157   STLUR_x    = LoadStoreRCpcUnscaledOffsetFixed | 0xC0000000,
1158   LDAPUR_x   = LoadStoreRCpcUnscaledOffsetFixed | 0xC0400000
1159 };
1160 
1161 #define ATOMIC_MEMORY_SIMPLE_OPC_LIST(V) \
1162   V(LDADD, 0x00000000),                  \
1163   V(LDCLR, 0x00001000),                  \
1164   V(LDEOR, 0x00002000),                  \
1165   V(LDSET, 0x00003000),                  \
1166   V(LDSMAX, 0x00004000),                 \
1167   V(LDSMIN, 0x00005000),                 \
1168   V(LDUMAX, 0x00006000),                 \
1169   V(LDUMIN, 0x00007000)
1170 
1171 // Atomic memory.
1172 enum AtomicMemoryOp {
1173   AtomicMemoryFixed = 0x38200000,
1174   AtomicMemoryFMask = 0x3B200C00,
1175   AtomicMemoryMask = 0xFFE0FC00,
1176   SWPB = AtomicMemoryFixed | 0x00008000,
1177   SWPAB = AtomicMemoryFixed | 0x00808000,
1178   SWPLB = AtomicMemoryFixed | 0x00408000,
1179   SWPALB = AtomicMemoryFixed | 0x00C08000,
1180   SWPH = AtomicMemoryFixed | 0x40008000,
1181   SWPAH = AtomicMemoryFixed | 0x40808000,
1182   SWPLH = AtomicMemoryFixed | 0x40408000,
1183   SWPALH = AtomicMemoryFixed | 0x40C08000,
1184   SWP_w = AtomicMemoryFixed | 0x80008000,
1185   SWPA_w = AtomicMemoryFixed | 0x80808000,
1186   SWPL_w = AtomicMemoryFixed | 0x80408000,
1187   SWPAL_w = AtomicMemoryFixed | 0x80C08000,
1188   SWP_x = AtomicMemoryFixed | 0xC0008000,
1189   SWPA_x = AtomicMemoryFixed | 0xC0808000,
1190   SWPL_x = AtomicMemoryFixed | 0xC0408000,
1191   SWPAL_x = AtomicMemoryFixed | 0xC0C08000,
1192   LDAPRB = AtomicMemoryFixed | 0x0080C000,
1193   LDAPRH = AtomicMemoryFixed | 0x4080C000,
1194   LDAPR_w = AtomicMemoryFixed | 0x8080C000,
1195   LDAPR_x = AtomicMemoryFixed | 0xC080C000,
1196 
1197   AtomicMemorySimpleFMask = 0x3B208C00,
1198   AtomicMemorySimpleOpMask = 0x00007000,
1199 #define ATOMIC_MEMORY_SIMPLE(N, OP)              \
1200   N##Op = OP,                                    \
1201   N##B = AtomicMemoryFixed | OP,                 \
1202   N##AB = AtomicMemoryFixed | OP | 0x00800000,   \
1203   N##LB = AtomicMemoryFixed | OP | 0x00400000,   \
1204   N##ALB = AtomicMemoryFixed | OP | 0x00C00000,  \
1205   N##H = AtomicMemoryFixed | OP | 0x40000000,    \
1206   N##AH = AtomicMemoryFixed | OP | 0x40800000,   \
1207   N##LH = AtomicMemoryFixed | OP | 0x40400000,   \
1208   N##ALH = AtomicMemoryFixed | OP | 0x40C00000,  \
1209   N##_w = AtomicMemoryFixed | OP | 0x80000000,   \
1210   N##A_w = AtomicMemoryFixed | OP | 0x80800000,  \
1211   N##L_w = AtomicMemoryFixed | OP | 0x80400000,  \
1212   N##AL_w = AtomicMemoryFixed | OP | 0x80C00000, \
1213   N##_x = AtomicMemoryFixed | OP | 0xC0000000,   \
1214   N##A_x = AtomicMemoryFixed | OP | 0xC0800000,  \
1215   N##L_x = AtomicMemoryFixed | OP | 0xC0400000,  \
1216   N##AL_x = AtomicMemoryFixed | OP | 0xC0C00000
1217 
1218   ATOMIC_MEMORY_SIMPLE_OPC_LIST(ATOMIC_MEMORY_SIMPLE)
1219 #undef ATOMIC_MEMORY_SIMPLE
1220 };
1221 
1222 // Conditional compare.
1223 enum ConditionalCompareOp {
1224   ConditionalCompareMask = 0x60000000,
1225   CCMN                   = 0x20000000,
1226   CCMP                   = 0x60000000
1227 };
1228 
1229 // Conditional compare register.
1230 enum ConditionalCompareRegisterOp {
1231   ConditionalCompareRegisterFixed = 0x1A400000,
1232   ConditionalCompareRegisterFMask = 0x1FE00800,
1233   ConditionalCompareRegisterMask  = 0xFFE00C10,
1234   CCMN_w = ConditionalCompareRegisterFixed | CCMN,
1235   CCMN_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMN,
1236   CCMP_w = ConditionalCompareRegisterFixed | CCMP,
1237   CCMP_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMP
1238 };
1239 
1240 // Conditional compare immediate.
1241 enum ConditionalCompareImmediateOp {
1242   ConditionalCompareImmediateFixed = 0x1A400800,
1243   ConditionalCompareImmediateFMask = 0x1FE00800,
1244   ConditionalCompareImmediateMask  = 0xFFE00C10,
1245   CCMN_w_imm = ConditionalCompareImmediateFixed | CCMN,
1246   CCMN_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMN,
1247   CCMP_w_imm = ConditionalCompareImmediateFixed | CCMP,
1248   CCMP_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMP
1249 };
1250 
1251 // Conditional select.
1252 enum ConditionalSelectOp {
1253   ConditionalSelectFixed = 0x1A800000,
1254   ConditionalSelectFMask = 0x1FE00000,
1255   ConditionalSelectMask  = 0xFFE00C00,
1256   CSEL_w                 = ConditionalSelectFixed | 0x00000000,
1257   CSEL_x                 = ConditionalSelectFixed | 0x80000000,
1258   CSEL                   = CSEL_w,
1259   CSINC_w                = ConditionalSelectFixed | 0x00000400,
1260   CSINC_x                = ConditionalSelectFixed | 0x80000400,
1261   CSINC                  = CSINC_w,
1262   CSINV_w                = ConditionalSelectFixed | 0x40000000,
1263   CSINV_x                = ConditionalSelectFixed | 0xC0000000,
1264   CSINV                  = CSINV_w,
1265   CSNEG_w                = ConditionalSelectFixed | 0x40000400,
1266   CSNEG_x                = ConditionalSelectFixed | 0xC0000400,
1267   CSNEG                  = CSNEG_w
1268 };
1269 
1270 // Data processing 1 source.
1271 enum DataProcessing1SourceOp {
1272   DataProcessing1SourceFixed = 0x5AC00000,
1273   DataProcessing1SourceFMask = 0x5FE00000,
1274   DataProcessing1SourceMask  = 0xFFFFFC00,
1275   RBIT    = DataProcessing1SourceFixed | 0x00000000,
1276   RBIT_w  = RBIT,
1277   RBIT_x  = RBIT | SixtyFourBits,
1278   REV16   = DataProcessing1SourceFixed | 0x00000400,
1279   REV16_w = REV16,
1280   REV16_x = REV16 | SixtyFourBits,
1281   REV     = DataProcessing1SourceFixed | 0x00000800,
1282   REV_w   = REV,
1283   REV32_x = REV | SixtyFourBits,
1284   REV_x   = DataProcessing1SourceFixed | SixtyFourBits | 0x00000C00,
1285   CLZ     = DataProcessing1SourceFixed | 0x00001000,
1286   CLZ_w   = CLZ,
1287   CLZ_x   = CLZ | SixtyFourBits,
1288   CLS     = DataProcessing1SourceFixed | 0x00001400,
1289   CLS_w   = CLS,
1290   CLS_x   = CLS | SixtyFourBits,
1291 
1292   // Pointer authentication instructions in Armv8.3.
1293   PACIA  = DataProcessing1SourceFixed | 0x80010000,
1294   PACIB  = DataProcessing1SourceFixed | 0x80010400,
1295   PACDA  = DataProcessing1SourceFixed | 0x80010800,
1296   PACDB  = DataProcessing1SourceFixed | 0x80010C00,
1297   AUTIA  = DataProcessing1SourceFixed | 0x80011000,
1298   AUTIB  = DataProcessing1SourceFixed | 0x80011400,
1299   AUTDA  = DataProcessing1SourceFixed | 0x80011800,
1300   AUTDB  = DataProcessing1SourceFixed | 0x80011C00,
1301   PACIZA = DataProcessing1SourceFixed | 0x80012000,
1302   PACIZB = DataProcessing1SourceFixed | 0x80012400,
1303   PACDZA = DataProcessing1SourceFixed | 0x80012800,
1304   PACDZB = DataProcessing1SourceFixed | 0x80012C00,
1305   AUTIZA = DataProcessing1SourceFixed | 0x80013000,
1306   AUTIZB = DataProcessing1SourceFixed | 0x80013400,
1307   AUTDZA = DataProcessing1SourceFixed | 0x80013800,
1308   AUTDZB = DataProcessing1SourceFixed | 0x80013C00,
1309   XPACI  = DataProcessing1SourceFixed | 0x80014000,
1310   XPACD  = DataProcessing1SourceFixed | 0x80014400
1311 };
1312 
1313 // Data processing 2 source.
1314 enum DataProcessing2SourceOp {
1315   DataProcessing2SourceFixed = 0x1AC00000,
1316   DataProcessing2SourceFMask = 0x5FE00000,
1317   DataProcessing2SourceMask  = 0xFFE0FC00,
1318   UDIV_w  = DataProcessing2SourceFixed | 0x00000800,
1319   UDIV_x  = DataProcessing2SourceFixed | 0x80000800,
1320   UDIV    = UDIV_w,
1321   SDIV_w  = DataProcessing2SourceFixed | 0x00000C00,
1322   SDIV_x  = DataProcessing2SourceFixed | 0x80000C00,
1323   SDIV    = SDIV_w,
1324   LSLV_w  = DataProcessing2SourceFixed | 0x00002000,
1325   LSLV_x  = DataProcessing2SourceFixed | 0x80002000,
1326   LSLV    = LSLV_w,
1327   LSRV_w  = DataProcessing2SourceFixed | 0x00002400,
1328   LSRV_x  = DataProcessing2SourceFixed | 0x80002400,
1329   LSRV    = LSRV_w,
1330   ASRV_w  = DataProcessing2SourceFixed | 0x00002800,
1331   ASRV_x  = DataProcessing2SourceFixed | 0x80002800,
1332   ASRV    = ASRV_w,
1333   RORV_w  = DataProcessing2SourceFixed | 0x00002C00,
1334   RORV_x  = DataProcessing2SourceFixed | 0x80002C00,
1335   RORV    = RORV_w,
1336   PACGA   = DataProcessing2SourceFixed | SixtyFourBits | 0x00003000,
1337   CRC32B  = DataProcessing2SourceFixed | 0x00004000,
1338   CRC32H  = DataProcessing2SourceFixed | 0x00004400,
1339   CRC32W  = DataProcessing2SourceFixed | 0x00004800,
1340   CRC32X  = DataProcessing2SourceFixed | SixtyFourBits | 0x00004C00,
1341   CRC32CB = DataProcessing2SourceFixed | 0x00005000,
1342   CRC32CH = DataProcessing2SourceFixed | 0x00005400,
1343   CRC32CW = DataProcessing2SourceFixed | 0x00005800,
1344   CRC32CX = DataProcessing2SourceFixed | SixtyFourBits | 0x00005C00
1345 };
1346 
1347 // Data processing 3 source.
1348 enum DataProcessing3SourceOp {
1349   DataProcessing3SourceFixed = 0x1B000000,
1350   DataProcessing3SourceFMask = 0x1F000000,
1351   DataProcessing3SourceMask  = 0xFFE08000,
1352   MADD_w                     = DataProcessing3SourceFixed | 0x00000000,
1353   MADD_x                     = DataProcessing3SourceFixed | 0x80000000,
1354   MADD                       = MADD_w,
1355   MSUB_w                     = DataProcessing3SourceFixed | 0x00008000,
1356   MSUB_x                     = DataProcessing3SourceFixed | 0x80008000,
1357   MSUB                       = MSUB_w,
1358   SMADDL_x                   = DataProcessing3SourceFixed | 0x80200000,
1359   SMSUBL_x                   = DataProcessing3SourceFixed | 0x80208000,
1360   SMULH_x                    = DataProcessing3SourceFixed | 0x80400000,
1361   UMADDL_x                   = DataProcessing3SourceFixed | 0x80A00000,
1362   UMSUBL_x                   = DataProcessing3SourceFixed | 0x80A08000,
1363   UMULH_x                    = DataProcessing3SourceFixed | 0x80C00000
1364 };
1365 
1366 // Floating point compare.
1367 enum FPCompareOp {
1368   FPCompareFixed = 0x1E202000,
1369   FPCompareFMask = 0x5F203C00,
1370   FPCompareMask  = 0xFFE0FC1F,
1371   FCMP_h         = FPCompareFixed | FP16 | 0x00000000,
1372   FCMP_s         = FPCompareFixed | 0x00000000,
1373   FCMP_d         = FPCompareFixed | FP64 | 0x00000000,
1374   FCMP           = FCMP_s,
1375   FCMP_h_zero    = FPCompareFixed | FP16 | 0x00000008,
1376   FCMP_s_zero    = FPCompareFixed | 0x00000008,
1377   FCMP_d_zero    = FPCompareFixed | FP64 | 0x00000008,
1378   FCMP_zero      = FCMP_s_zero,
1379   FCMPE_h        = FPCompareFixed | FP16 | 0x00000010,
1380   FCMPE_s        = FPCompareFixed | 0x00000010,
1381   FCMPE_d        = FPCompareFixed | FP64 | 0x00000010,
1382   FCMPE          = FCMPE_s,
1383   FCMPE_h_zero   = FPCompareFixed | FP16 | 0x00000018,
1384   FCMPE_s_zero   = FPCompareFixed | 0x00000018,
1385   FCMPE_d_zero   = FPCompareFixed | FP64 | 0x00000018,
1386   FCMPE_zero     = FCMPE_s_zero
1387 };
1388 
1389 // Floating point conditional compare.
1390 enum FPConditionalCompareOp {
1391   FPConditionalCompareFixed = 0x1E200400,
1392   FPConditionalCompareFMask = 0x5F200C00,
1393   FPConditionalCompareMask  = 0xFFE00C10,
1394   FCCMP_h                   = FPConditionalCompareFixed | FP16 | 0x00000000,
1395   FCCMP_s                   = FPConditionalCompareFixed | 0x00000000,
1396   FCCMP_d                   = FPConditionalCompareFixed | FP64 | 0x00000000,
1397   FCCMP                     = FCCMP_s,
1398   FCCMPE_h                  = FPConditionalCompareFixed | FP16 | 0x00000010,
1399   FCCMPE_s                  = FPConditionalCompareFixed | 0x00000010,
1400   FCCMPE_d                  = FPConditionalCompareFixed | FP64 | 0x00000010,
1401   FCCMPE                    = FCCMPE_s
1402 };
1403 
1404 // Floating point conditional select.
1405 enum FPConditionalSelectOp {
1406   FPConditionalSelectFixed = 0x1E200C00,
1407   FPConditionalSelectFMask = 0x5F200C00,
1408   FPConditionalSelectMask  = 0xFFE00C00,
1409   FCSEL_h                  = FPConditionalSelectFixed | FP16 | 0x00000000,
1410   FCSEL_s                  = FPConditionalSelectFixed | 0x00000000,
1411   FCSEL_d                  = FPConditionalSelectFixed | FP64 | 0x00000000,
1412   FCSEL                    = FCSEL_s
1413 };
1414 
1415 // Floating point immediate.
1416 enum FPImmediateOp {
1417   FPImmediateFixed = 0x1E201000,
1418   FPImmediateFMask = 0x5F201C00,
1419   FPImmediateMask  = 0xFFE01C00,
1420   FMOV_h_imm       = FPImmediateFixed | FP16 | 0x00000000,
1421   FMOV_s_imm       = FPImmediateFixed | 0x00000000,
1422   FMOV_d_imm       = FPImmediateFixed | FP64 | 0x00000000
1423 };
1424 
1425 // Floating point data processing 1 source.
1426 enum FPDataProcessing1SourceOp {
1427   FPDataProcessing1SourceFixed = 0x1E204000,
1428   FPDataProcessing1SourceFMask = 0x5F207C00,
1429   FPDataProcessing1SourceMask  = 0xFFFFFC00,
1430   FMOV_h   = FPDataProcessing1SourceFixed | FP16 | 0x00000000,
1431   FMOV_s   = FPDataProcessing1SourceFixed | 0x00000000,
1432   FMOV_d   = FPDataProcessing1SourceFixed | FP64 | 0x00000000,
1433   FMOV     = FMOV_s,
1434   FABS_h   = FPDataProcessing1SourceFixed | FP16 | 0x00008000,
1435   FABS_s   = FPDataProcessing1SourceFixed | 0x00008000,
1436   FABS_d   = FPDataProcessing1SourceFixed | FP64 | 0x00008000,
1437   FABS     = FABS_s,
1438   FNEG_h   = FPDataProcessing1SourceFixed | FP16 | 0x00010000,
1439   FNEG_s   = FPDataProcessing1SourceFixed | 0x00010000,
1440   FNEG_d   = FPDataProcessing1SourceFixed | FP64 | 0x00010000,
1441   FNEG     = FNEG_s,
1442   FSQRT_h  = FPDataProcessing1SourceFixed | FP16 | 0x00018000,
1443   FSQRT_s  = FPDataProcessing1SourceFixed | 0x00018000,
1444   FSQRT_d  = FPDataProcessing1SourceFixed | FP64 | 0x00018000,
1445   FSQRT    = FSQRT_s,
1446   FCVT_ds  = FPDataProcessing1SourceFixed | 0x00028000,
1447   FCVT_sd  = FPDataProcessing1SourceFixed | FP64 | 0x00020000,
1448   FCVT_hs  = FPDataProcessing1SourceFixed | 0x00038000,
1449   FCVT_hd  = FPDataProcessing1SourceFixed | FP64 | 0x00038000,
1450   FCVT_sh  = FPDataProcessing1SourceFixed | 0x00C20000,
1451   FCVT_dh  = FPDataProcessing1SourceFixed | 0x00C28000,
1452   FRINT32X_s = FPDataProcessing1SourceFixed | 0x00088000,
1453   FRINT32X_d = FPDataProcessing1SourceFixed | FP64 | 0x00088000,
1454   FRINT32X = FRINT32X_s,
1455   FRINT32Z_s = FPDataProcessing1SourceFixed | 0x00080000,
1456   FRINT32Z_d = FPDataProcessing1SourceFixed | FP64 | 0x00080000,
1457   FRINT32Z = FRINT32Z_s,
1458   FRINT64X_s = FPDataProcessing1SourceFixed | 0x00098000,
1459   FRINT64X_d = FPDataProcessing1SourceFixed | FP64 | 0x00098000,
1460   FRINT64X = FRINT64X_s,
1461   FRINT64Z_s = FPDataProcessing1SourceFixed | 0x00090000,
1462   FRINT64Z_d = FPDataProcessing1SourceFixed | FP64 | 0x00090000,
1463   FRINT64Z = FRINT64Z_s,
1464   FRINTN_h = FPDataProcessing1SourceFixed | FP16 | 0x00040000,
1465   FRINTN_s = FPDataProcessing1SourceFixed | 0x00040000,
1466   FRINTN_d = FPDataProcessing1SourceFixed | FP64 | 0x00040000,
1467   FRINTN   = FRINTN_s,
1468   FRINTP_h = FPDataProcessing1SourceFixed | FP16 | 0x00048000,
1469   FRINTP_s = FPDataProcessing1SourceFixed | 0x00048000,
1470   FRINTP_d = FPDataProcessing1SourceFixed | FP64 | 0x00048000,
1471   FRINTP   = FRINTP_s,
1472   FRINTM_h = FPDataProcessing1SourceFixed | FP16 | 0x00050000,
1473   FRINTM_s = FPDataProcessing1SourceFixed | 0x00050000,
1474   FRINTM_d = FPDataProcessing1SourceFixed | FP64 | 0x00050000,
1475   FRINTM   = FRINTM_s,
1476   FRINTZ_h = FPDataProcessing1SourceFixed | FP16 | 0x00058000,
1477   FRINTZ_s = FPDataProcessing1SourceFixed | 0x00058000,
1478   FRINTZ_d = FPDataProcessing1SourceFixed | FP64 | 0x00058000,
1479   FRINTZ   = FRINTZ_s,
1480   FRINTA_h = FPDataProcessing1SourceFixed | FP16 | 0x00060000,
1481   FRINTA_s = FPDataProcessing1SourceFixed | 0x00060000,
1482   FRINTA_d = FPDataProcessing1SourceFixed | FP64 | 0x00060000,
1483   FRINTA   = FRINTA_s,
1484   FRINTX_h = FPDataProcessing1SourceFixed | FP16 | 0x00070000,
1485   FRINTX_s = FPDataProcessing1SourceFixed | 0x00070000,
1486   FRINTX_d = FPDataProcessing1SourceFixed | FP64 | 0x00070000,
1487   FRINTX   = FRINTX_s,
1488   FRINTI_h = FPDataProcessing1SourceFixed | FP16 | 0x00078000,
1489   FRINTI_s = FPDataProcessing1SourceFixed | 0x00078000,
1490   FRINTI_d = FPDataProcessing1SourceFixed | FP64 | 0x00078000,
1491   FRINTI   = FRINTI_s
1492 };
1493 
1494 // Floating point data processing 2 source.
1495 enum FPDataProcessing2SourceOp {
1496   FPDataProcessing2SourceFixed = 0x1E200800,
1497   FPDataProcessing2SourceFMask = 0x5F200C00,
1498   FPDataProcessing2SourceMask  = 0xFFE0FC00,
1499   FMUL     = FPDataProcessing2SourceFixed | 0x00000000,
1500   FMUL_h   = FMUL | FP16,
1501   FMUL_s   = FMUL,
1502   FMUL_d   = FMUL | FP64,
1503   FDIV     = FPDataProcessing2SourceFixed | 0x00001000,
1504   FDIV_h   = FDIV | FP16,
1505   FDIV_s   = FDIV,
1506   FDIV_d   = FDIV | FP64,
1507   FADD     = FPDataProcessing2SourceFixed | 0x00002000,
1508   FADD_h   = FADD | FP16,
1509   FADD_s   = FADD,
1510   FADD_d   = FADD | FP64,
1511   FSUB     = FPDataProcessing2SourceFixed | 0x00003000,
1512   FSUB_h   = FSUB | FP16,
1513   FSUB_s   = FSUB,
1514   FSUB_d   = FSUB | FP64,
1515   FMAX     = FPDataProcessing2SourceFixed | 0x00004000,
1516   FMAX_h   = FMAX | FP16,
1517   FMAX_s   = FMAX,
1518   FMAX_d   = FMAX | FP64,
1519   FMIN     = FPDataProcessing2SourceFixed | 0x00005000,
1520   FMIN_h   = FMIN | FP16,
1521   FMIN_s   = FMIN,
1522   FMIN_d   = FMIN | FP64,
1523   FMAXNM   = FPDataProcessing2SourceFixed | 0x00006000,
1524   FMAXNM_h = FMAXNM | FP16,
1525   FMAXNM_s = FMAXNM,
1526   FMAXNM_d = FMAXNM | FP64,
1527   FMINNM   = FPDataProcessing2SourceFixed | 0x00007000,
1528   FMINNM_h = FMINNM | FP16,
1529   FMINNM_s = FMINNM,
1530   FMINNM_d = FMINNM | FP64,
1531   FNMUL    = FPDataProcessing2SourceFixed | 0x00008000,
1532   FNMUL_h  = FNMUL | FP16,
1533   FNMUL_s  = FNMUL,
1534   FNMUL_d  = FNMUL | FP64
1535 };
1536 
1537 // Floating point data processing 3 source.
1538 enum FPDataProcessing3SourceOp {
1539   FPDataProcessing3SourceFixed = 0x1F000000,
1540   FPDataProcessing3SourceFMask = 0x5F000000,
1541   FPDataProcessing3SourceMask  = 0xFFE08000,
1542   FMADD_h                      = FPDataProcessing3SourceFixed | 0x00C00000,
1543   FMSUB_h                      = FPDataProcessing3SourceFixed | 0x00C08000,
1544   FNMADD_h                     = FPDataProcessing3SourceFixed | 0x00E00000,
1545   FNMSUB_h                     = FPDataProcessing3SourceFixed | 0x00E08000,
1546   FMADD_s                      = FPDataProcessing3SourceFixed | 0x00000000,
1547   FMSUB_s                      = FPDataProcessing3SourceFixed | 0x00008000,
1548   FNMADD_s                     = FPDataProcessing3SourceFixed | 0x00200000,
1549   FNMSUB_s                     = FPDataProcessing3SourceFixed | 0x00208000,
1550   FMADD_d                      = FPDataProcessing3SourceFixed | 0x00400000,
1551   FMSUB_d                      = FPDataProcessing3SourceFixed | 0x00408000,
1552   FNMADD_d                     = FPDataProcessing3SourceFixed | 0x00600000,
1553   FNMSUB_d                     = FPDataProcessing3SourceFixed | 0x00608000
1554 };
1555 
1556 // Conversion between floating point and integer.
1557 enum FPIntegerConvertOp {
1558   FPIntegerConvertFixed = 0x1E200000,
1559   FPIntegerConvertFMask = 0x5F20FC00,
1560   FPIntegerConvertMask  = 0xFFFFFC00,
1561   FCVTNS    = FPIntegerConvertFixed | 0x00000000,
1562   FCVTNS_wh = FCVTNS | FP16,
1563   FCVTNS_xh = FCVTNS | SixtyFourBits | FP16,
1564   FCVTNS_ws = FCVTNS,
1565   FCVTNS_xs = FCVTNS | SixtyFourBits,
1566   FCVTNS_wd = FCVTNS | FP64,
1567   FCVTNS_xd = FCVTNS | SixtyFourBits | FP64,
1568   FCVTNU    = FPIntegerConvertFixed | 0x00010000,
1569   FCVTNU_wh = FCVTNU | FP16,
1570   FCVTNU_xh = FCVTNU | SixtyFourBits | FP16,
1571   FCVTNU_ws = FCVTNU,
1572   FCVTNU_xs = FCVTNU | SixtyFourBits,
1573   FCVTNU_wd = FCVTNU | FP64,
1574   FCVTNU_xd = FCVTNU | SixtyFourBits | FP64,
1575   FCVTPS    = FPIntegerConvertFixed | 0x00080000,
1576   FCVTPS_wh = FCVTPS | FP16,
1577   FCVTPS_xh = FCVTPS | SixtyFourBits | FP16,
1578   FCVTPS_ws = FCVTPS,
1579   FCVTPS_xs = FCVTPS | SixtyFourBits,
1580   FCVTPS_wd = FCVTPS | FP64,
1581   FCVTPS_xd = FCVTPS | SixtyFourBits | FP64,
1582   FCVTPU    = FPIntegerConvertFixed | 0x00090000,
1583   FCVTPU_wh = FCVTPU | FP16,
1584   FCVTPU_xh = FCVTPU | SixtyFourBits | FP16,
1585   FCVTPU_ws = FCVTPU,
1586   FCVTPU_xs = FCVTPU | SixtyFourBits,
1587   FCVTPU_wd = FCVTPU | FP64,
1588   FCVTPU_xd = FCVTPU | SixtyFourBits | FP64,
1589   FCVTMS    = FPIntegerConvertFixed | 0x00100000,
1590   FCVTMS_wh = FCVTMS | FP16,
1591   FCVTMS_xh = FCVTMS | SixtyFourBits | FP16,
1592   FCVTMS_ws = FCVTMS,
1593   FCVTMS_xs = FCVTMS | SixtyFourBits,
1594   FCVTMS_wd = FCVTMS | FP64,
1595   FCVTMS_xd = FCVTMS | SixtyFourBits | FP64,
1596   FCVTMU    = FPIntegerConvertFixed | 0x00110000,
1597   FCVTMU_wh = FCVTMU | FP16,
1598   FCVTMU_xh = FCVTMU | SixtyFourBits | FP16,
1599   FCVTMU_ws = FCVTMU,
1600   FCVTMU_xs = FCVTMU | SixtyFourBits,
1601   FCVTMU_wd = FCVTMU | FP64,
1602   FCVTMU_xd = FCVTMU | SixtyFourBits | FP64,
1603   FCVTZS    = FPIntegerConvertFixed | 0x00180000,
1604   FCVTZS_wh = FCVTZS | FP16,
1605   FCVTZS_xh = FCVTZS | SixtyFourBits | FP16,
1606   FCVTZS_ws = FCVTZS,
1607   FCVTZS_xs = FCVTZS | SixtyFourBits,
1608   FCVTZS_wd = FCVTZS | FP64,
1609   FCVTZS_xd = FCVTZS | SixtyFourBits | FP64,
1610   FCVTZU    = FPIntegerConvertFixed | 0x00190000,
1611   FCVTZU_wh = FCVTZU | FP16,
1612   FCVTZU_xh = FCVTZU | SixtyFourBits | FP16,
1613   FCVTZU_ws = FCVTZU,
1614   FCVTZU_xs = FCVTZU | SixtyFourBits,
1615   FCVTZU_wd = FCVTZU | FP64,
1616   FCVTZU_xd = FCVTZU | SixtyFourBits | FP64,
1617   SCVTF     = FPIntegerConvertFixed | 0x00020000,
1618   SCVTF_hw  = SCVTF | FP16,
1619   SCVTF_hx  = SCVTF | SixtyFourBits | FP16,
1620   SCVTF_sw  = SCVTF,
1621   SCVTF_sx  = SCVTF | SixtyFourBits,
1622   SCVTF_dw  = SCVTF | FP64,
1623   SCVTF_dx  = SCVTF | SixtyFourBits | FP64,
1624   UCVTF     = FPIntegerConvertFixed | 0x00030000,
1625   UCVTF_hw  = UCVTF | FP16,
1626   UCVTF_hx  = UCVTF | SixtyFourBits | FP16,
1627   UCVTF_sw  = UCVTF,
1628   UCVTF_sx  = UCVTF | SixtyFourBits,
1629   UCVTF_dw  = UCVTF | FP64,
1630   UCVTF_dx  = UCVTF | SixtyFourBits | FP64,
1631   FCVTAS    = FPIntegerConvertFixed | 0x00040000,
1632   FCVTAS_wh = FCVTAS | FP16,
1633   FCVTAS_xh = FCVTAS | SixtyFourBits | FP16,
1634   FCVTAS_ws = FCVTAS,
1635   FCVTAS_xs = FCVTAS | SixtyFourBits,
1636   FCVTAS_wd = FCVTAS | FP64,
1637   FCVTAS_xd = FCVTAS | SixtyFourBits | FP64,
1638   FCVTAU    = FPIntegerConvertFixed | 0x00050000,
1639   FCVTAU_wh = FCVTAU | FP16,
1640   FCVTAU_xh = FCVTAU | SixtyFourBits | FP16,
1641   FCVTAU_ws = FCVTAU,
1642   FCVTAU_xs = FCVTAU | SixtyFourBits,
1643   FCVTAU_wd = FCVTAU | FP64,
1644   FCVTAU_xd = FCVTAU | SixtyFourBits | FP64,
1645   FMOV_wh   = FPIntegerConvertFixed | 0x00060000 | FP16,
1646   FMOV_hw   = FPIntegerConvertFixed | 0x00070000 | FP16,
1647   FMOV_xh   = FMOV_wh | SixtyFourBits,
1648   FMOV_hx   = FMOV_hw | SixtyFourBits,
1649   FMOV_ws   = FPIntegerConvertFixed | 0x00060000,
1650   FMOV_sw   = FPIntegerConvertFixed | 0x00070000,
1651   FMOV_xd   = FMOV_ws | SixtyFourBits | FP64,
1652   FMOV_dx   = FMOV_sw | SixtyFourBits | FP64,
1653   FMOV_d1_x = FPIntegerConvertFixed | SixtyFourBits | 0x008F0000,
1654   FMOV_x_d1 = FPIntegerConvertFixed | SixtyFourBits | 0x008E0000,
1655   FJCVTZS   = FPIntegerConvertFixed | FP64 | 0x001E0000
1656 };
1657 
1658 // Conversion between fixed point and floating point.
1659 enum FPFixedPointConvertOp {
1660   FPFixedPointConvertFixed = 0x1E000000,
1661   FPFixedPointConvertFMask = 0x5F200000,
1662   FPFixedPointConvertMask  = 0xFFFF0000,
1663   FCVTZS_fixed    = FPFixedPointConvertFixed | 0x00180000,
1664   FCVTZS_wh_fixed = FCVTZS_fixed | FP16,
1665   FCVTZS_xh_fixed = FCVTZS_fixed | SixtyFourBits | FP16,
1666   FCVTZS_ws_fixed = FCVTZS_fixed,
1667   FCVTZS_xs_fixed = FCVTZS_fixed | SixtyFourBits,
1668   FCVTZS_wd_fixed = FCVTZS_fixed | FP64,
1669   FCVTZS_xd_fixed = FCVTZS_fixed | SixtyFourBits | FP64,
1670   FCVTZU_fixed    = FPFixedPointConvertFixed | 0x00190000,
1671   FCVTZU_wh_fixed = FCVTZU_fixed | FP16,
1672   FCVTZU_xh_fixed = FCVTZU_fixed | SixtyFourBits | FP16,
1673   FCVTZU_ws_fixed = FCVTZU_fixed,
1674   FCVTZU_xs_fixed = FCVTZU_fixed | SixtyFourBits,
1675   FCVTZU_wd_fixed = FCVTZU_fixed | FP64,
1676   FCVTZU_xd_fixed = FCVTZU_fixed | SixtyFourBits | FP64,
1677   SCVTF_fixed     = FPFixedPointConvertFixed | 0x00020000,
1678   SCVTF_hw_fixed  = SCVTF_fixed | FP16,
1679   SCVTF_hx_fixed  = SCVTF_fixed | SixtyFourBits | FP16,
1680   SCVTF_sw_fixed  = SCVTF_fixed,
1681   SCVTF_sx_fixed  = SCVTF_fixed | SixtyFourBits,
1682   SCVTF_dw_fixed  = SCVTF_fixed | FP64,
1683   SCVTF_dx_fixed  = SCVTF_fixed | SixtyFourBits | FP64,
1684   UCVTF_fixed     = FPFixedPointConvertFixed | 0x00030000,
1685   UCVTF_hw_fixed  = UCVTF_fixed | FP16,
1686   UCVTF_hx_fixed  = UCVTF_fixed | SixtyFourBits | FP16,
1687   UCVTF_sw_fixed  = UCVTF_fixed,
1688   UCVTF_sx_fixed  = UCVTF_fixed | SixtyFourBits,
1689   UCVTF_dw_fixed  = UCVTF_fixed | FP64,
1690   UCVTF_dx_fixed  = UCVTF_fixed | SixtyFourBits | FP64
1691 };
1692 
1693 // Crypto - two register SHA.
1694 enum Crypto2RegSHAOp {
1695   Crypto2RegSHAFixed = 0x5E280800,
1696   Crypto2RegSHAFMask = 0xFF3E0C00
1697 };
1698 
1699 // Crypto - three register SHA.
1700 enum Crypto3RegSHAOp {
1701   Crypto3RegSHAFixed = 0x5E000000,
1702   Crypto3RegSHAFMask = 0xFF208C00
1703 };
1704 
1705 // Crypto - AES.
1706 enum CryptoAESOp {
1707   CryptoAESFixed = 0x4E280800,
1708   CryptoAESFMask = 0xFF3E0C00
1709 };
1710 
1711 // NEON instructions with two register operands.
1712 enum NEON2RegMiscOp {
1713   NEON2RegMiscFixed = 0x0E200800,
1714   NEON2RegMiscFMask = 0x9F3E0C00,
1715   NEON2RegMiscMask  = 0xBF3FFC00,
1716   NEON2RegMiscUBit  = 0x20000000,
1717   NEON_REV64     = NEON2RegMiscFixed | 0x00000000,
1718   NEON_REV32     = NEON2RegMiscFixed | 0x20000000,
1719   NEON_REV16     = NEON2RegMiscFixed | 0x00001000,
1720   NEON_SADDLP    = NEON2RegMiscFixed | 0x00002000,
1721   NEON_UADDLP    = NEON_SADDLP | NEON2RegMiscUBit,
1722   NEON_SUQADD    = NEON2RegMiscFixed | 0x00003000,
1723   NEON_USQADD    = NEON_SUQADD | NEON2RegMiscUBit,
1724   NEON_CLS       = NEON2RegMiscFixed | 0x00004000,
1725   NEON_CLZ       = NEON2RegMiscFixed | 0x20004000,
1726   NEON_CNT       = NEON2RegMiscFixed | 0x00005000,
1727   NEON_RBIT_NOT  = NEON2RegMiscFixed | 0x20005000,
1728   NEON_SADALP    = NEON2RegMiscFixed | 0x00006000,
1729   NEON_UADALP    = NEON_SADALP | NEON2RegMiscUBit,
1730   NEON_SQABS     = NEON2RegMiscFixed | 0x00007000,
1731   NEON_SQNEG     = NEON2RegMiscFixed | 0x20007000,
1732   NEON_CMGT_zero = NEON2RegMiscFixed | 0x00008000,
1733   NEON_CMGE_zero = NEON2RegMiscFixed | 0x20008000,
1734   NEON_CMEQ_zero = NEON2RegMiscFixed | 0x00009000,
1735   NEON_CMLE_zero = NEON2RegMiscFixed | 0x20009000,
1736   NEON_CMLT_zero = NEON2RegMiscFixed | 0x0000A000,
1737   NEON_ABS       = NEON2RegMiscFixed | 0x0000B000,
1738   NEON_NEG       = NEON2RegMiscFixed | 0x2000B000,
1739   NEON_XTN       = NEON2RegMiscFixed | 0x00012000,
1740   NEON_SQXTUN    = NEON2RegMiscFixed | 0x20012000,
1741   NEON_SHLL      = NEON2RegMiscFixed | 0x20013000,
1742   NEON_SQXTN     = NEON2RegMiscFixed | 0x00014000,
1743   NEON_UQXTN     = NEON_SQXTN | NEON2RegMiscUBit,
1744 
1745   NEON2RegMiscOpcode = 0x0001F000,
1746   NEON_RBIT_NOT_opcode = NEON_RBIT_NOT & NEON2RegMiscOpcode,
1747   NEON_NEG_opcode = NEON_NEG & NEON2RegMiscOpcode,
1748   NEON_XTN_opcode = NEON_XTN & NEON2RegMiscOpcode,
1749   NEON_UQXTN_opcode = NEON_UQXTN & NEON2RegMiscOpcode,
1750 
1751   // These instructions use only one bit of the size field. The other bit is
1752   // used to distinguish between instructions.
1753   NEON2RegMiscFPMask = NEON2RegMiscMask | 0x00800000,
1754   NEON_FABS   = NEON2RegMiscFixed | 0x0080F000,
1755   NEON_FNEG   = NEON2RegMiscFixed | 0x2080F000,
1756   NEON_FCVTN  = NEON2RegMiscFixed | 0x00016000,
1757   NEON_FCVTXN = NEON2RegMiscFixed | 0x20016000,
1758   NEON_FCVTL  = NEON2RegMiscFixed | 0x00017000,
1759   NEON_FRINT32X = NEON2RegMiscFixed | 0x2001E000,
1760   NEON_FRINT32Z = NEON2RegMiscFixed | 0x0001E000,
1761   NEON_FRINT64X = NEON2RegMiscFixed | 0x2001F000,
1762   NEON_FRINT64Z = NEON2RegMiscFixed | 0x0001F000,
1763   NEON_FRINTN = NEON2RegMiscFixed | 0x00018000,
1764   NEON_FRINTA = NEON2RegMiscFixed | 0x20018000,
1765   NEON_FRINTP = NEON2RegMiscFixed | 0x00818000,
1766   NEON_FRINTM = NEON2RegMiscFixed | 0x00019000,
1767   NEON_FRINTX = NEON2RegMiscFixed | 0x20019000,
1768   NEON_FRINTZ = NEON2RegMiscFixed | 0x00819000,
1769   NEON_FRINTI = NEON2RegMiscFixed | 0x20819000,
1770   NEON_FCVTNS = NEON2RegMiscFixed | 0x0001A000,
1771   NEON_FCVTNU = NEON_FCVTNS | NEON2RegMiscUBit,
1772   NEON_FCVTPS = NEON2RegMiscFixed | 0x0081A000,
1773   NEON_FCVTPU = NEON_FCVTPS | NEON2RegMiscUBit,
1774   NEON_FCVTMS = NEON2RegMiscFixed | 0x0001B000,
1775   NEON_FCVTMU = NEON_FCVTMS | NEON2RegMiscUBit,
1776   NEON_FCVTZS = NEON2RegMiscFixed | 0x0081B000,
1777   NEON_FCVTZU = NEON_FCVTZS | NEON2RegMiscUBit,
1778   NEON_FCVTAS = NEON2RegMiscFixed | 0x0001C000,
1779   NEON_FCVTAU = NEON_FCVTAS | NEON2RegMiscUBit,
1780   NEON_FSQRT  = NEON2RegMiscFixed | 0x2081F000,
1781   NEON_SCVTF  = NEON2RegMiscFixed | 0x0001D000,
1782   NEON_UCVTF  = NEON_SCVTF | NEON2RegMiscUBit,
1783   NEON_URSQRTE = NEON2RegMiscFixed | 0x2081C000,
1784   NEON_URECPE  = NEON2RegMiscFixed | 0x0081C000,
1785   NEON_FRSQRTE = NEON2RegMiscFixed | 0x2081D000,
1786   NEON_FRECPE  = NEON2RegMiscFixed | 0x0081D000,
1787   NEON_FCMGT_zero = NEON2RegMiscFixed | 0x0080C000,
1788   NEON_FCMGE_zero = NEON2RegMiscFixed | 0x2080C000,
1789   NEON_FCMEQ_zero = NEON2RegMiscFixed | 0x0080D000,
1790   NEON_FCMLE_zero = NEON2RegMiscFixed | 0x2080D000,
1791   NEON_FCMLT_zero = NEON2RegMiscFixed | 0x0080E000,
1792 
1793   NEON_FCVTL_opcode = NEON_FCVTL & NEON2RegMiscOpcode,
1794   NEON_FCVTN_opcode = NEON_FCVTN & NEON2RegMiscOpcode
1795 };
1796 
1797 // NEON instructions with two register operands (FP16).
1798 enum NEON2RegMiscFP16Op {
1799   NEON2RegMiscFP16Fixed = 0x0E780800,
1800   NEON2RegMiscFP16FMask = 0x9F7E0C00,
1801   NEON2RegMiscFP16Mask  = 0xBFFFFC00,
1802   NEON_FRINTN_H     = NEON2RegMiscFP16Fixed | 0x00018000,
1803   NEON_FRINTM_H     = NEON2RegMiscFP16Fixed | 0x00019000,
1804   NEON_FCVTNS_H     = NEON2RegMiscFP16Fixed | 0x0001A000,
1805   NEON_FCVTMS_H     = NEON2RegMiscFP16Fixed | 0x0001B000,
1806   NEON_FCVTAS_H     = NEON2RegMiscFP16Fixed | 0x0001C000,
1807   NEON_SCVTF_H      = NEON2RegMiscFP16Fixed | 0x0001D000,
1808   NEON_FCMGT_H_zero = NEON2RegMiscFP16Fixed | 0x0080C000,
1809   NEON_FCMEQ_H_zero = NEON2RegMiscFP16Fixed | 0x0080D000,
1810   NEON_FCMLT_H_zero = NEON2RegMiscFP16Fixed | 0x0080E000,
1811   NEON_FABS_H       = NEON2RegMiscFP16Fixed | 0x0080F000,
1812   NEON_FRINTP_H     = NEON2RegMiscFP16Fixed | 0x00818000,
1813   NEON_FRINTZ_H     = NEON2RegMiscFP16Fixed | 0x00819000,
1814   NEON_FCVTPS_H     = NEON2RegMiscFP16Fixed | 0x0081A000,
1815   NEON_FCVTZS_H     = NEON2RegMiscFP16Fixed | 0x0081B000,
1816   NEON_FRECPE_H     = NEON2RegMiscFP16Fixed | 0x0081D000,
1817   NEON_FRINTA_H     = NEON2RegMiscFP16Fixed | 0x20018000,
1818   NEON_FRINTX_H     = NEON2RegMiscFP16Fixed | 0x20019000,
1819   NEON_FCVTNU_H     = NEON2RegMiscFP16Fixed | 0x2001A000,
1820   NEON_FCVTMU_H     = NEON2RegMiscFP16Fixed | 0x2001B000,
1821   NEON_FCVTAU_H     = NEON2RegMiscFP16Fixed | 0x2001C000,
1822   NEON_UCVTF_H      = NEON2RegMiscFP16Fixed | 0x2001D000,
1823   NEON_FCMGE_H_zero = NEON2RegMiscFP16Fixed | 0x2080C000,
1824   NEON_FCMLE_H_zero = NEON2RegMiscFP16Fixed | 0x2080D000,
1825   NEON_FNEG_H       = NEON2RegMiscFP16Fixed | 0x2080F000,
1826   NEON_FRINTI_H     = NEON2RegMiscFP16Fixed | 0x20819000,
1827   NEON_FCVTPU_H     = NEON2RegMiscFP16Fixed | 0x2081A000,
1828   NEON_FCVTZU_H     = NEON2RegMiscFP16Fixed | 0x2081B000,
1829   NEON_FRSQRTE_H    = NEON2RegMiscFP16Fixed | 0x2081D000,
1830   NEON_FSQRT_H      = NEON2RegMiscFP16Fixed | 0x2081F000
1831 };
1832 
1833 // NEON instructions with three same-type operands.
1834 enum NEON3SameOp {
1835   NEON3SameFixed = 0x0E200400,
1836   NEON3SameFMask = 0x9F200400,
1837   NEON3SameMask =  0xBF20FC00,
1838   NEON3SameUBit =  0x20000000,
1839   NEON_ADD    = NEON3SameFixed | 0x00008000,
1840   NEON_ADDP   = NEON3SameFixed | 0x0000B800,
1841   NEON_SHADD  = NEON3SameFixed | 0x00000000,
1842   NEON_SHSUB  = NEON3SameFixed | 0x00002000,
1843   NEON_SRHADD = NEON3SameFixed | 0x00001000,
1844   NEON_CMEQ   = NEON3SameFixed | NEON3SameUBit | 0x00008800,
1845   NEON_CMGE   = NEON3SameFixed | 0x00003800,
1846   NEON_CMGT   = NEON3SameFixed | 0x00003000,
1847   NEON_CMHI   = NEON3SameFixed | NEON3SameUBit | NEON_CMGT,
1848   NEON_CMHS   = NEON3SameFixed | NEON3SameUBit | NEON_CMGE,
1849   NEON_CMTST  = NEON3SameFixed | 0x00008800,
1850   NEON_MLA    = NEON3SameFixed | 0x00009000,
1851   NEON_MLS    = NEON3SameFixed | 0x20009000,
1852   NEON_MUL    = NEON3SameFixed | 0x00009800,
1853   NEON_PMUL   = NEON3SameFixed | 0x20009800,
1854   NEON_SRSHL  = NEON3SameFixed | 0x00005000,
1855   NEON_SQSHL  = NEON3SameFixed | 0x00004800,
1856   NEON_SQRSHL = NEON3SameFixed | 0x00005800,
1857   NEON_SSHL   = NEON3SameFixed | 0x00004000,
1858   NEON_SMAX   = NEON3SameFixed | 0x00006000,
1859   NEON_SMAXP  = NEON3SameFixed | 0x0000A000,
1860   NEON_SMIN   = NEON3SameFixed | 0x00006800,
1861   NEON_SMINP  = NEON3SameFixed | 0x0000A800,
1862   NEON_SABD   = NEON3SameFixed | 0x00007000,
1863   NEON_SABA   = NEON3SameFixed | 0x00007800,
1864   NEON_UABD   = NEON3SameFixed | NEON3SameUBit | NEON_SABD,
1865   NEON_UABA   = NEON3SameFixed | NEON3SameUBit | NEON_SABA,
1866   NEON_SQADD  = NEON3SameFixed | 0x00000800,
1867   NEON_SQSUB  = NEON3SameFixed | 0x00002800,
1868   NEON_SUB    = NEON3SameFixed | NEON3SameUBit | 0x00008000,
1869   NEON_UHADD  = NEON3SameFixed | NEON3SameUBit | NEON_SHADD,
1870   NEON_UHSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SHSUB,
1871   NEON_URHADD = NEON3SameFixed | NEON3SameUBit | NEON_SRHADD,
1872   NEON_UMAX   = NEON3SameFixed | NEON3SameUBit | NEON_SMAX,
1873   NEON_UMAXP  = NEON3SameFixed | NEON3SameUBit | NEON_SMAXP,
1874   NEON_UMIN   = NEON3SameFixed | NEON3SameUBit | NEON_SMIN,
1875   NEON_UMINP  = NEON3SameFixed | NEON3SameUBit | NEON_SMINP,
1876   NEON_URSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SRSHL,
1877   NEON_UQADD  = NEON3SameFixed | NEON3SameUBit | NEON_SQADD,
1878   NEON_UQRSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQRSHL,
1879   NEON_UQSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SQSHL,
1880   NEON_UQSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SQSUB,
1881   NEON_USHL   = NEON3SameFixed | NEON3SameUBit | NEON_SSHL,
1882   NEON_SQDMULH  = NEON3SameFixed | 0x0000B000,
1883   NEON_SQRDMULH = NEON3SameFixed | 0x2000B000,
1884 
1885   // NEON floating point instructions with three same-type operands.
1886   NEON3SameFPFixed = NEON3SameFixed | 0x0000C000,
1887   NEON3SameFPFMask = NEON3SameFMask | 0x0000C000,
1888   NEON3SameFPMask = NEON3SameMask | 0x00800000,
1889   NEON_FADD    = NEON3SameFixed | 0x0000D000,
1890   NEON_FSUB    = NEON3SameFixed | 0x0080D000,
1891   NEON_FMUL    = NEON3SameFixed | 0x2000D800,
1892   NEON_FDIV    = NEON3SameFixed | 0x2000F800,
1893   NEON_FMAX    = NEON3SameFixed | 0x0000F000,
1894   NEON_FMAXNM  = NEON3SameFixed | 0x0000C000,
1895   NEON_FMAXP   = NEON3SameFixed | 0x2000F000,
1896   NEON_FMAXNMP = NEON3SameFixed | 0x2000C000,
1897   NEON_FMIN    = NEON3SameFixed | 0x0080F000,
1898   NEON_FMINNM  = NEON3SameFixed | 0x0080C000,
1899   NEON_FMINP   = NEON3SameFixed | 0x2080F000,
1900   NEON_FMINNMP = NEON3SameFixed | 0x2080C000,
1901   NEON_FMLA    = NEON3SameFixed | 0x0000C800,
1902   NEON_FMLS    = NEON3SameFixed | 0x0080C800,
1903   NEON_FMULX   = NEON3SameFixed | 0x0000D800,
1904   NEON_FRECPS  = NEON3SameFixed | 0x0000F800,
1905   NEON_FRSQRTS = NEON3SameFixed | 0x0080F800,
1906   NEON_FABD    = NEON3SameFixed | 0x2080D000,
1907   NEON_FADDP   = NEON3SameFixed | 0x2000D000,
1908   NEON_FCMEQ   = NEON3SameFixed | 0x0000E000,
1909   NEON_FCMGE   = NEON3SameFixed | 0x2000E000,
1910   NEON_FCMGT   = NEON3SameFixed | 0x2080E000,
1911   NEON_FACGE   = NEON3SameFixed | 0x2000E800,
1912   NEON_FACGT   = NEON3SameFixed | 0x2080E800,
1913 
1914   // NEON logical instructions with three same-type operands.
1915   NEON3SameLogicalFixed = NEON3SameFixed | 0x00001800,
1916   NEON3SameLogicalFMask = NEON3SameFMask | 0x0000F800,
1917   NEON3SameLogicalMask = 0xBFE0FC00,
1918   NEON3SameLogicalFormatMask = NEON_Q,
1919   NEON_AND = NEON3SameLogicalFixed | 0x00000000,
1920   NEON_ORR = NEON3SameLogicalFixed | 0x00A00000,
1921   NEON_ORN = NEON3SameLogicalFixed | 0x00C00000,
1922   NEON_EOR = NEON3SameLogicalFixed | 0x20000000,
1923   NEON_BIC = NEON3SameLogicalFixed | 0x00400000,
1924   NEON_BIF = NEON3SameLogicalFixed | 0x20C00000,
1925   NEON_BIT = NEON3SameLogicalFixed | 0x20800000,
1926   NEON_BSL = NEON3SameLogicalFixed | 0x20400000,
1927 
1928   // FHM (FMLAL-like) instructions have an oddball encoding scheme under 3Same.
1929   NEON3SameFHMMask = 0xBFE0FC00,                // U  size  opcode
1930   NEON_FMLAL   = NEON3SameFixed | 0x0000E800,   // 0    00   11101
1931   NEON_FMLAL2  = NEON3SameFixed | 0x2000C800,   // 1    00   11001
1932   NEON_FMLSL   = NEON3SameFixed | 0x0080E800,   // 0    10   11101
1933   NEON_FMLSL2  = NEON3SameFixed | 0x2080C800    // 1    10   11001
1934 };
1935 
1936 
1937 enum NEON3SameFP16 {
1938   NEON3SameFP16Fixed = 0x0E400400,
1939   NEON3SameFP16FMask = 0x9F60C400,
1940   NEON3SameFP16Mask =  0xBFE0FC00,
1941   NEON_FMAXNM_H  = NEON3SameFP16Fixed | 0x00000000,
1942   NEON_FMLA_H    = NEON3SameFP16Fixed | 0x00000800,
1943   NEON_FADD_H    = NEON3SameFP16Fixed | 0x00001000,
1944   NEON_FMULX_H   = NEON3SameFP16Fixed | 0x00001800,
1945   NEON_FCMEQ_H   = NEON3SameFP16Fixed | 0x00002000,
1946   NEON_FMAX_H    = NEON3SameFP16Fixed | 0x00003000,
1947   NEON_FRECPS_H  = NEON3SameFP16Fixed | 0x00003800,
1948   NEON_FMINNM_H  = NEON3SameFP16Fixed | 0x00800000,
1949   NEON_FMLS_H    = NEON3SameFP16Fixed | 0x00800800,
1950   NEON_FSUB_H    = NEON3SameFP16Fixed | 0x00801000,
1951   NEON_FMIN_H    = NEON3SameFP16Fixed | 0x00803000,
1952   NEON_FRSQRTS_H = NEON3SameFP16Fixed | 0x00803800,
1953   NEON_FMAXNMP_H = NEON3SameFP16Fixed | 0x20000000,
1954   NEON_FADDP_H   = NEON3SameFP16Fixed | 0x20001000,
1955   NEON_FMUL_H    = NEON3SameFP16Fixed | 0x20001800,
1956   NEON_FCMGE_H   = NEON3SameFP16Fixed | 0x20002000,
1957   NEON_FACGE_H   = NEON3SameFP16Fixed | 0x20002800,
1958   NEON_FMAXP_H   = NEON3SameFP16Fixed | 0x20003000,
1959   NEON_FDIV_H    = NEON3SameFP16Fixed | 0x20003800,
1960   NEON_FMINNMP_H = NEON3SameFP16Fixed | 0x20800000,
1961   NEON_FABD_H    = NEON3SameFP16Fixed | 0x20801000,
1962   NEON_FCMGT_H   = NEON3SameFP16Fixed | 0x20802000,
1963   NEON_FACGT_H   = NEON3SameFP16Fixed | 0x20802800,
1964   NEON_FMINP_H   = NEON3SameFP16Fixed | 0x20803000
1965 };
1966 
1967 
1968 // 'Extra' NEON instructions with three same-type operands.
1969 enum NEON3SameExtraOp {
1970   NEON3SameExtraFixed = 0x0E008400,
1971   NEON3SameExtraUBit = 0x20000000,
1972   NEON3SameExtraFMask = 0x9E208400,
1973   NEON3SameExtraMask = 0xBE20FC00,
1974   NEON_SQRDMLAH = NEON3SameExtraFixed | NEON3SameExtraUBit,
1975   NEON_SQRDMLSH = NEON3SameExtraFixed | NEON3SameExtraUBit | 0x00000800,
1976   NEON_SDOT = NEON3SameExtraFixed | 0x00001000,
1977   NEON_UDOT = NEON3SameExtraFixed | NEON3SameExtraUBit | 0x00001000,
1978 
1979   /* v8.3 Complex Numbers */
1980   NEON3SameExtraFCFixed = 0x2E00C400,
1981   NEON3SameExtraFCFMask = 0xBF20C400,
1982   // FCMLA fixes opcode<3:2>, and uses opcode<1:0> to encode <rotate>.
1983   NEON3SameExtraFCMLAMask = NEON3SameExtraFCFMask | 0x00006000,
1984   NEON_FCMLA = NEON3SameExtraFCFixed,
1985   // FCADD fixes opcode<3:2, 0>, and uses opcode<1> to encode <rotate>.
1986   NEON3SameExtraFCADDMask = NEON3SameExtraFCFMask | 0x00006800,
1987   NEON_FCADD = NEON3SameExtraFCFixed | 0x00002000
1988   // Other encodings under NEON3SameExtraFCFMask are UNALLOCATED.
1989 };
1990 
1991 // NEON instructions with three different-type operands.
1992 enum NEON3DifferentOp {
1993   NEON3DifferentFixed = 0x0E200000,
1994   NEON3DifferentFMask = 0x9F200C00,
1995   NEON3DifferentMask  = 0xFF20FC00,
1996   NEON_ADDHN    = NEON3DifferentFixed | 0x00004000,
1997   NEON_ADDHN2   = NEON_ADDHN | NEON_Q,
1998   NEON_PMULL    = NEON3DifferentFixed | 0x0000E000,
1999   NEON_PMULL2   = NEON_PMULL | NEON_Q,
2000   NEON_RADDHN   = NEON3DifferentFixed | 0x20004000,
2001   NEON_RADDHN2  = NEON_RADDHN | NEON_Q,
2002   NEON_RSUBHN   = NEON3DifferentFixed | 0x20006000,
2003   NEON_RSUBHN2  = NEON_RSUBHN | NEON_Q,
2004   NEON_SABAL    = NEON3DifferentFixed | 0x00005000,
2005   NEON_SABAL2   = NEON_SABAL | NEON_Q,
2006   NEON_SABDL    = NEON3DifferentFixed | 0x00007000,
2007   NEON_SABDL2   = NEON_SABDL | NEON_Q,
2008   NEON_SADDL    = NEON3DifferentFixed | 0x00000000,
2009   NEON_SADDL2   = NEON_SADDL | NEON_Q,
2010   NEON_SADDW    = NEON3DifferentFixed | 0x00001000,
2011   NEON_SADDW2   = NEON_SADDW | NEON_Q,
2012   NEON_SMLAL    = NEON3DifferentFixed | 0x00008000,
2013   NEON_SMLAL2   = NEON_SMLAL | NEON_Q,
2014   NEON_SMLSL    = NEON3DifferentFixed | 0x0000A000,
2015   NEON_SMLSL2   = NEON_SMLSL | NEON_Q,
2016   NEON_SMULL    = NEON3DifferentFixed | 0x0000C000,
2017   NEON_SMULL2   = NEON_SMULL | NEON_Q,
2018   NEON_SSUBL    = NEON3DifferentFixed | 0x00002000,
2019   NEON_SSUBL2   = NEON_SSUBL | NEON_Q,
2020   NEON_SSUBW    = NEON3DifferentFixed | 0x00003000,
2021   NEON_SSUBW2   = NEON_SSUBW | NEON_Q,
2022   NEON_SQDMLAL  = NEON3DifferentFixed | 0x00009000,
2023   NEON_SQDMLAL2 = NEON_SQDMLAL | NEON_Q,
2024   NEON_SQDMLSL  = NEON3DifferentFixed | 0x0000B000,
2025   NEON_SQDMLSL2 = NEON_SQDMLSL | NEON_Q,
2026   NEON_SQDMULL  = NEON3DifferentFixed | 0x0000D000,
2027   NEON_SQDMULL2 = NEON_SQDMULL | NEON_Q,
2028   NEON_SUBHN    = NEON3DifferentFixed | 0x00006000,
2029   NEON_SUBHN2   = NEON_SUBHN | NEON_Q,
2030   NEON_UABAL    = NEON_SABAL | NEON3SameUBit,
2031   NEON_UABAL2   = NEON_UABAL | NEON_Q,
2032   NEON_UABDL    = NEON_SABDL | NEON3SameUBit,
2033   NEON_UABDL2   = NEON_UABDL | NEON_Q,
2034   NEON_UADDL    = NEON_SADDL | NEON3SameUBit,
2035   NEON_UADDL2   = NEON_UADDL | NEON_Q,
2036   NEON_UADDW    = NEON_SADDW | NEON3SameUBit,
2037   NEON_UADDW2   = NEON_UADDW | NEON_Q,
2038   NEON_UMLAL    = NEON_SMLAL | NEON3SameUBit,
2039   NEON_UMLAL2   = NEON_UMLAL | NEON_Q,
2040   NEON_UMLSL    = NEON_SMLSL | NEON3SameUBit,
2041   NEON_UMLSL2   = NEON_UMLSL | NEON_Q,
2042   NEON_UMULL    = NEON_SMULL | NEON3SameUBit,
2043   NEON_UMULL2   = NEON_UMULL | NEON_Q,
2044   NEON_USUBL    = NEON_SSUBL | NEON3SameUBit,
2045   NEON_USUBL2   = NEON_USUBL | NEON_Q,
2046   NEON_USUBW    = NEON_SSUBW | NEON3SameUBit,
2047   NEON_USUBW2   = NEON_USUBW | NEON_Q
2048 };
2049 
2050 // NEON instructions operating across vectors.
2051 enum NEONAcrossLanesOp {
2052   NEONAcrossLanesFixed = 0x0E300800,
2053   NEONAcrossLanesFMask = 0x9F3E0C00,
2054   NEONAcrossLanesMask  = 0xBF3FFC00,
2055   NEON_ADDV   = NEONAcrossLanesFixed | 0x0001B000,
2056   NEON_SADDLV = NEONAcrossLanesFixed | 0x00003000,
2057   NEON_UADDLV = NEONAcrossLanesFixed | 0x20003000,
2058   NEON_SMAXV  = NEONAcrossLanesFixed | 0x0000A000,
2059   NEON_SMINV  = NEONAcrossLanesFixed | 0x0001A000,
2060   NEON_UMAXV  = NEONAcrossLanesFixed | 0x2000A000,
2061   NEON_UMINV  = NEONAcrossLanesFixed | 0x2001A000,
2062 
2063   NEONAcrossLanesFP16Fixed = NEONAcrossLanesFixed | 0x0000C000,
2064   NEONAcrossLanesFP16FMask = NEONAcrossLanesFMask | 0x2000C000,
2065   NEONAcrossLanesFP16Mask  = NEONAcrossLanesMask  | 0x20800000,
2066   NEON_FMAXNMV_H = NEONAcrossLanesFP16Fixed | 0x00000000,
2067   NEON_FMAXV_H   = NEONAcrossLanesFP16Fixed | 0x00003000,
2068   NEON_FMINNMV_H = NEONAcrossLanesFP16Fixed | 0x00800000,
2069   NEON_FMINV_H   = NEONAcrossLanesFP16Fixed | 0x00803000,
2070 
2071   // NEON floating point across instructions.
2072   NEONAcrossLanesFPFixed = NEONAcrossLanesFixed | 0x2000C000,
2073   NEONAcrossLanesFPFMask = NEONAcrossLanesFMask | 0x2000C000,
2074   NEONAcrossLanesFPMask  = NEONAcrossLanesMask  | 0x20800000,
2075 
2076   NEON_FMAXV   = NEONAcrossLanesFPFixed | 0x2000F000,
2077   NEON_FMINV   = NEONAcrossLanesFPFixed | 0x2080F000,
2078   NEON_FMAXNMV = NEONAcrossLanesFPFixed | 0x2000C000,
2079   NEON_FMINNMV = NEONAcrossLanesFPFixed | 0x2080C000
2080 };
2081 
2082 // NEON instructions with indexed element operand.
2083 enum NEONByIndexedElementOp {
2084   NEONByIndexedElementFixed = 0x0F000000,
2085   NEONByIndexedElementFMask = 0x9F000400,
2086   NEONByIndexedElementMask  = 0xBF00F400,
2087   NEON_MUL_byelement   = NEONByIndexedElementFixed | 0x00008000,
2088   NEON_MLA_byelement   = NEONByIndexedElementFixed | 0x20000000,
2089   NEON_MLS_byelement   = NEONByIndexedElementFixed | 0x20004000,
2090   NEON_SMULL_byelement = NEONByIndexedElementFixed | 0x0000A000,
2091   NEON_SMLAL_byelement = NEONByIndexedElementFixed | 0x00002000,
2092   NEON_SMLSL_byelement = NEONByIndexedElementFixed | 0x00006000,
2093   NEON_UMULL_byelement = NEONByIndexedElementFixed | 0x2000A000,
2094   NEON_UMLAL_byelement = NEONByIndexedElementFixed | 0x20002000,
2095   NEON_UMLSL_byelement = NEONByIndexedElementFixed | 0x20006000,
2096   NEON_SQDMULL_byelement = NEONByIndexedElementFixed | 0x0000B000,
2097   NEON_SQDMLAL_byelement = NEONByIndexedElementFixed | 0x00003000,
2098   NEON_SQDMLSL_byelement = NEONByIndexedElementFixed | 0x00007000,
2099   NEON_SQDMULH_byelement  = NEONByIndexedElementFixed | 0x0000C000,
2100   NEON_SQRDMULH_byelement = NEONByIndexedElementFixed | 0x0000D000,
2101   NEON_SDOT_byelement = NEONByIndexedElementFixed | 0x0000E000,
2102   NEON_SQRDMLAH_byelement = NEONByIndexedElementFixed | 0x2000D000,
2103   NEON_UDOT_byelement = NEONByIndexedElementFixed | 0x2000E000,
2104   NEON_SQRDMLSH_byelement = NEONByIndexedElementFixed | 0x2000F000,
2105 
2106   NEON_FMLA_H_byelement   = NEONByIndexedElementFixed | 0x00001000,
2107   NEON_FMLS_H_byelement   = NEONByIndexedElementFixed | 0x00005000,
2108   NEON_FMUL_H_byelement   = NEONByIndexedElementFixed | 0x00009000,
2109   NEON_FMULX_H_byelement  = NEONByIndexedElementFixed | 0x20009000,
2110 
2111   // Floating point instructions.
2112   NEONByIndexedElementFPFixed = NEONByIndexedElementFixed | 0x00800000,
2113   NEONByIndexedElementFPMask = NEONByIndexedElementMask | 0x00800000,
2114   NEON_FMLA_byelement  = NEONByIndexedElementFPFixed | 0x00001000,
2115   NEON_FMLS_byelement  = NEONByIndexedElementFPFixed | 0x00005000,
2116   NEON_FMUL_byelement  = NEONByIndexedElementFPFixed | 0x00009000,
2117   NEON_FMULX_byelement = NEONByIndexedElementFPFixed | 0x20009000,
2118 
2119   // FMLAL-like instructions.
2120   // For all cases: U = x, size = 10, opcode = xx00
2121   NEONByIndexedElementFPLongFixed = NEONByIndexedElementFixed | 0x00800000,
2122   NEONByIndexedElementFPLongFMask = NEONByIndexedElementFMask | 0x00C03000,
2123   NEONByIndexedElementFPLongMask = 0xBFC0F400,
2124   NEON_FMLAL_H_byelement  = NEONByIndexedElementFixed | 0x00800000,
2125   NEON_FMLAL2_H_byelement = NEONByIndexedElementFixed | 0x20808000,
2126   NEON_FMLSL_H_byelement  = NEONByIndexedElementFixed | 0x00804000,
2127   NEON_FMLSL2_H_byelement = NEONByIndexedElementFixed | 0x2080C000,
2128 
2129   // Complex instruction(s).
2130   // This is necessary because the 'rot' encoding moves into the
2131   // NEONByIndex..Mask space.
2132   NEONByIndexedElementFPComplexMask = 0xBF009400,
2133   NEON_FCMLA_byelement = NEONByIndexedElementFixed | 0x20001000
2134 };
2135 
2136 // NEON register copy.
2137 enum NEONCopyOp {
2138   NEONCopyFixed = 0x0E000400,
2139   NEONCopyFMask = 0x9FE08400,
2140   NEONCopyMask  = 0x3FE08400,
2141   NEONCopyInsElementMask = NEONCopyMask | 0x40000000,
2142   NEONCopyInsGeneralMask = NEONCopyMask | 0x40007800,
2143   NEONCopyDupElementMask = NEONCopyMask | 0x20007800,
2144   NEONCopyDupGeneralMask = NEONCopyDupElementMask,
2145   NEONCopyUmovMask       = NEONCopyMask | 0x20007800,
2146   NEONCopySmovMask       = NEONCopyMask | 0x20007800,
2147   NEON_INS_ELEMENT       = NEONCopyFixed | 0x60000000,
2148   NEON_INS_GENERAL       = NEONCopyFixed | 0x40001800,
2149   NEON_DUP_ELEMENT       = NEONCopyFixed | 0x00000000,
2150   NEON_DUP_GENERAL       = NEONCopyFixed | 0x00000800,
2151   NEON_SMOV              = NEONCopyFixed | 0x00002800,
2152   NEON_UMOV              = NEONCopyFixed | 0x00003800
2153 };
2154 
2155 // NEON extract.
2156 enum NEONExtractOp {
2157   NEONExtractFixed = 0x2E000000,
2158   NEONExtractFMask = 0xBF208400,
2159   NEONExtractMask =  0xBFE08400,
2160   NEON_EXT = NEONExtractFixed | 0x00000000
2161 };
2162 
2163 enum NEONLoadStoreMultiOp {
2164   NEONLoadStoreMultiL    = 0x00400000,
2165   NEONLoadStoreMulti1_1v = 0x00007000,
2166   NEONLoadStoreMulti1_2v = 0x0000A000,
2167   NEONLoadStoreMulti1_3v = 0x00006000,
2168   NEONLoadStoreMulti1_4v = 0x00002000,
2169   NEONLoadStoreMulti2    = 0x00008000,
2170   NEONLoadStoreMulti3    = 0x00004000,
2171   NEONLoadStoreMulti4    = 0x00000000
2172 };
2173 
2174 // NEON load/store multiple structures.
2175 enum NEONLoadStoreMultiStructOp {
2176   NEONLoadStoreMultiStructFixed = 0x0C000000,
2177   NEONLoadStoreMultiStructFMask = 0xBFBF0000,
2178   NEONLoadStoreMultiStructMask  = 0xBFFFF000,
2179   NEONLoadStoreMultiStructStore = NEONLoadStoreMultiStructFixed,
2180   NEONLoadStoreMultiStructLoad  = NEONLoadStoreMultiStructFixed |
2181                                   NEONLoadStoreMultiL,
2182   NEON_LD1_1v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_1v,
2183   NEON_LD1_2v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_2v,
2184   NEON_LD1_3v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_3v,
2185   NEON_LD1_4v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_4v,
2186   NEON_LD2    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti2,
2187   NEON_LD3    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti3,
2188   NEON_LD4    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti4,
2189   NEON_ST1_1v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_1v,
2190   NEON_ST1_2v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_2v,
2191   NEON_ST1_3v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_3v,
2192   NEON_ST1_4v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_4v,
2193   NEON_ST2    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti2,
2194   NEON_ST3    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti3,
2195   NEON_ST4    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti4
2196 };
2197 
2198 // NEON load/store multiple structures with post-index addressing.
2199 enum NEONLoadStoreMultiStructPostIndexOp {
2200   NEONLoadStoreMultiStructPostIndexFixed = 0x0C800000,
2201   NEONLoadStoreMultiStructPostIndexFMask = 0xBFA00000,
2202   NEONLoadStoreMultiStructPostIndexMask  = 0xBFE0F000,
2203   NEONLoadStoreMultiStructPostIndex = 0x00800000,
2204   NEON_LD1_1v_post = NEON_LD1_1v | NEONLoadStoreMultiStructPostIndex,
2205   NEON_LD1_2v_post = NEON_LD1_2v | NEONLoadStoreMultiStructPostIndex,
2206   NEON_LD1_3v_post = NEON_LD1_3v | NEONLoadStoreMultiStructPostIndex,
2207   NEON_LD1_4v_post = NEON_LD1_4v | NEONLoadStoreMultiStructPostIndex,
2208   NEON_LD2_post = NEON_LD2 | NEONLoadStoreMultiStructPostIndex,
2209   NEON_LD3_post = NEON_LD3 | NEONLoadStoreMultiStructPostIndex,
2210   NEON_LD4_post = NEON_LD4 | NEONLoadStoreMultiStructPostIndex,
2211   NEON_ST1_1v_post = NEON_ST1_1v | NEONLoadStoreMultiStructPostIndex,
2212   NEON_ST1_2v_post = NEON_ST1_2v | NEONLoadStoreMultiStructPostIndex,
2213   NEON_ST1_3v_post = NEON_ST1_3v | NEONLoadStoreMultiStructPostIndex,
2214   NEON_ST1_4v_post = NEON_ST1_4v | NEONLoadStoreMultiStructPostIndex,
2215   NEON_ST2_post = NEON_ST2 | NEONLoadStoreMultiStructPostIndex,
2216   NEON_ST3_post = NEON_ST3 | NEONLoadStoreMultiStructPostIndex,
2217   NEON_ST4_post = NEON_ST4 | NEONLoadStoreMultiStructPostIndex
2218 };
2219 
2220 enum NEONLoadStoreSingleOp {
2221   NEONLoadStoreSingle1        = 0x00000000,
2222   NEONLoadStoreSingle2        = 0x00200000,
2223   NEONLoadStoreSingle3        = 0x00002000,
2224   NEONLoadStoreSingle4        = 0x00202000,
2225   NEONLoadStoreSingleL        = 0x00400000,
2226   NEONLoadStoreSingle_b       = 0x00000000,
2227   NEONLoadStoreSingle_h       = 0x00004000,
2228   NEONLoadStoreSingle_s       = 0x00008000,
2229   NEONLoadStoreSingle_d       = 0x00008400,
2230   NEONLoadStoreSingleAllLanes = 0x0000C000,
2231   NEONLoadStoreSingleLenMask  = 0x00202000
2232 };
2233 
2234 // NEON load/store single structure.
2235 enum NEONLoadStoreSingleStructOp {
2236   NEONLoadStoreSingleStructFixed = 0x0D000000,
2237   NEONLoadStoreSingleStructFMask = 0xBF9F0000,
2238   NEONLoadStoreSingleStructMask  = 0xBFFFE000,
2239   NEONLoadStoreSingleStructStore = NEONLoadStoreSingleStructFixed,
2240   NEONLoadStoreSingleStructLoad  = NEONLoadStoreSingleStructFixed |
2241                                    NEONLoadStoreSingleL,
2242   NEONLoadStoreSingleStructLoad1 = NEONLoadStoreSingle1 |
2243                                    NEONLoadStoreSingleStructLoad,
2244   NEONLoadStoreSingleStructLoad2 = NEONLoadStoreSingle2 |
2245                                    NEONLoadStoreSingleStructLoad,
2246   NEONLoadStoreSingleStructLoad3 = NEONLoadStoreSingle3 |
2247                                    NEONLoadStoreSingleStructLoad,
2248   NEONLoadStoreSingleStructLoad4 = NEONLoadStoreSingle4 |
2249                                    NEONLoadStoreSingleStructLoad,
2250   NEONLoadStoreSingleStructStore1 = NEONLoadStoreSingle1 |
2251                                     NEONLoadStoreSingleStructFixed,
2252   NEONLoadStoreSingleStructStore2 = NEONLoadStoreSingle2 |
2253                                     NEONLoadStoreSingleStructFixed,
2254   NEONLoadStoreSingleStructStore3 = NEONLoadStoreSingle3 |
2255                                     NEONLoadStoreSingleStructFixed,
2256   NEONLoadStoreSingleStructStore4 = NEONLoadStoreSingle4 |
2257                                     NEONLoadStoreSingleStructFixed,
2258   NEON_LD1_b = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_b,
2259   NEON_LD1_h = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_h,
2260   NEON_LD1_s = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_s,
2261   NEON_LD1_d = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_d,
2262   NEON_LD1R  = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingleAllLanes,
2263   NEON_ST1_b = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_b,
2264   NEON_ST1_h = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_h,
2265   NEON_ST1_s = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_s,
2266   NEON_ST1_d = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_d,
2267 
2268   NEON_LD2_b = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_b,
2269   NEON_LD2_h = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_h,
2270   NEON_LD2_s = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_s,
2271   NEON_LD2_d = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_d,
2272   NEON_LD2R  = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingleAllLanes,
2273   NEON_ST2_b = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_b,
2274   NEON_ST2_h = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_h,
2275   NEON_ST2_s = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_s,
2276   NEON_ST2_d = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_d,
2277 
2278   NEON_LD3_b = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_b,
2279   NEON_LD3_h = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_h,
2280   NEON_LD3_s = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_s,
2281   NEON_LD3_d = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_d,
2282   NEON_LD3R  = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingleAllLanes,
2283   NEON_ST3_b = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_b,
2284   NEON_ST3_h = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_h,
2285   NEON_ST3_s = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_s,
2286   NEON_ST3_d = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_d,
2287 
2288   NEON_LD4_b = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_b,
2289   NEON_LD4_h = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_h,
2290   NEON_LD4_s = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_s,
2291   NEON_LD4_d = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_d,
2292   NEON_LD4R  = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingleAllLanes,
2293   NEON_ST4_b = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_b,
2294   NEON_ST4_h = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_h,
2295   NEON_ST4_s = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_s,
2296   NEON_ST4_d = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_d
2297 };
2298 
2299 // NEON load/store single structure with post-index addressing.
2300 enum NEONLoadStoreSingleStructPostIndexOp {
2301   NEONLoadStoreSingleStructPostIndexFixed = 0x0D800000,
2302   NEONLoadStoreSingleStructPostIndexFMask = 0xBF800000,
2303   NEONLoadStoreSingleStructPostIndexMask  = 0xBFE0E000,
2304   NEONLoadStoreSingleStructPostIndex =      0x00800000,
2305   NEON_LD1_b_post = NEON_LD1_b | NEONLoadStoreSingleStructPostIndex,
2306   NEON_LD1_h_post = NEON_LD1_h | NEONLoadStoreSingleStructPostIndex,
2307   NEON_LD1_s_post = NEON_LD1_s | NEONLoadStoreSingleStructPostIndex,
2308   NEON_LD1_d_post = NEON_LD1_d | NEONLoadStoreSingleStructPostIndex,
2309   NEON_LD1R_post  = NEON_LD1R | NEONLoadStoreSingleStructPostIndex,
2310   NEON_ST1_b_post = NEON_ST1_b | NEONLoadStoreSingleStructPostIndex,
2311   NEON_ST1_h_post = NEON_ST1_h | NEONLoadStoreSingleStructPostIndex,
2312   NEON_ST1_s_post = NEON_ST1_s | NEONLoadStoreSingleStructPostIndex,
2313   NEON_ST1_d_post = NEON_ST1_d | NEONLoadStoreSingleStructPostIndex,
2314 
2315   NEON_LD2_b_post = NEON_LD2_b | NEONLoadStoreSingleStructPostIndex,
2316   NEON_LD2_h_post = NEON_LD2_h | NEONLoadStoreSingleStructPostIndex,
2317   NEON_LD2_s_post = NEON_LD2_s | NEONLoadStoreSingleStructPostIndex,
2318   NEON_LD2_d_post = NEON_LD2_d | NEONLoadStoreSingleStructPostIndex,
2319   NEON_LD2R_post  = NEON_LD2R | NEONLoadStoreSingleStructPostIndex,
2320   NEON_ST2_b_post = NEON_ST2_b | NEONLoadStoreSingleStructPostIndex,
2321   NEON_ST2_h_post = NEON_ST2_h | NEONLoadStoreSingleStructPostIndex,
2322   NEON_ST2_s_post = NEON_ST2_s | NEONLoadStoreSingleStructPostIndex,
2323   NEON_ST2_d_post = NEON_ST2_d | NEONLoadStoreSingleStructPostIndex,
2324 
2325   NEON_LD3_b_post = NEON_LD3_b | NEONLoadStoreSingleStructPostIndex,
2326   NEON_LD3_h_post = NEON_LD3_h | NEONLoadStoreSingleStructPostIndex,
2327   NEON_LD3_s_post = NEON_LD3_s | NEONLoadStoreSingleStructPostIndex,
2328   NEON_LD3_d_post = NEON_LD3_d | NEONLoadStoreSingleStructPostIndex,
2329   NEON_LD3R_post  = NEON_LD3R | NEONLoadStoreSingleStructPostIndex,
2330   NEON_ST3_b_post = NEON_ST3_b | NEONLoadStoreSingleStructPostIndex,
2331   NEON_ST3_h_post = NEON_ST3_h | NEONLoadStoreSingleStructPostIndex,
2332   NEON_ST3_s_post = NEON_ST3_s | NEONLoadStoreSingleStructPostIndex,
2333   NEON_ST3_d_post = NEON_ST3_d | NEONLoadStoreSingleStructPostIndex,
2334 
2335   NEON_LD4_b_post = NEON_LD4_b | NEONLoadStoreSingleStructPostIndex,
2336   NEON_LD4_h_post = NEON_LD4_h | NEONLoadStoreSingleStructPostIndex,
2337   NEON_LD4_s_post = NEON_LD4_s | NEONLoadStoreSingleStructPostIndex,
2338   NEON_LD4_d_post = NEON_LD4_d | NEONLoadStoreSingleStructPostIndex,
2339   NEON_LD4R_post  = NEON_LD4R | NEONLoadStoreSingleStructPostIndex,
2340   NEON_ST4_b_post = NEON_ST4_b | NEONLoadStoreSingleStructPostIndex,
2341   NEON_ST4_h_post = NEON_ST4_h | NEONLoadStoreSingleStructPostIndex,
2342   NEON_ST4_s_post = NEON_ST4_s | NEONLoadStoreSingleStructPostIndex,
2343   NEON_ST4_d_post = NEON_ST4_d | NEONLoadStoreSingleStructPostIndex
2344 };
2345 
2346 // NEON modified immediate.
2347 enum NEONModifiedImmediateOp {
2348   NEONModifiedImmediateFixed = 0x0F000400,
2349   NEONModifiedImmediateFMask = 0x9FF80400,
2350   NEONModifiedImmediateOpBit = 0x20000000,
2351   NEONModifiedImmediate_FMOV = NEONModifiedImmediateFixed | 0x00000800,
2352   NEONModifiedImmediate_MOVI = NEONModifiedImmediateFixed | 0x00000000,
2353   NEONModifiedImmediate_MVNI = NEONModifiedImmediateFixed | 0x20000000,
2354   NEONModifiedImmediate_ORR  = NEONModifiedImmediateFixed | 0x00001000,
2355   NEONModifiedImmediate_BIC  = NEONModifiedImmediateFixed | 0x20001000
2356 };
2357 
2358 // NEON shift immediate.
2359 enum NEONShiftImmediateOp {
2360   NEONShiftImmediateFixed = 0x0F000400,
2361   NEONShiftImmediateFMask = 0x9F800400,
2362   NEONShiftImmediateMask  = 0xBF80FC00,
2363   NEONShiftImmediateUBit  = 0x20000000,
2364   NEON_SHL      = NEONShiftImmediateFixed | 0x00005000,
2365   NEON_SSHLL    = NEONShiftImmediateFixed | 0x0000A000,
2366   NEON_USHLL    = NEONShiftImmediateFixed | 0x2000A000,
2367   NEON_SLI      = NEONShiftImmediateFixed | 0x20005000,
2368   NEON_SRI      = NEONShiftImmediateFixed | 0x20004000,
2369   NEON_SHRN     = NEONShiftImmediateFixed | 0x00008000,
2370   NEON_RSHRN    = NEONShiftImmediateFixed | 0x00008800,
2371   NEON_UQSHRN   = NEONShiftImmediateFixed | 0x20009000,
2372   NEON_UQRSHRN  = NEONShiftImmediateFixed | 0x20009800,
2373   NEON_SQSHRN   = NEONShiftImmediateFixed | 0x00009000,
2374   NEON_SQRSHRN  = NEONShiftImmediateFixed | 0x00009800,
2375   NEON_SQSHRUN  = NEONShiftImmediateFixed | 0x20008000,
2376   NEON_SQRSHRUN = NEONShiftImmediateFixed | 0x20008800,
2377   NEON_SSHR     = NEONShiftImmediateFixed | 0x00000000,
2378   NEON_SRSHR    = NEONShiftImmediateFixed | 0x00002000,
2379   NEON_USHR     = NEONShiftImmediateFixed | 0x20000000,
2380   NEON_URSHR    = NEONShiftImmediateFixed | 0x20002000,
2381   NEON_SSRA     = NEONShiftImmediateFixed | 0x00001000,
2382   NEON_SRSRA    = NEONShiftImmediateFixed | 0x00003000,
2383   NEON_USRA     = NEONShiftImmediateFixed | 0x20001000,
2384   NEON_URSRA    = NEONShiftImmediateFixed | 0x20003000,
2385   NEON_SQSHLU   = NEONShiftImmediateFixed | 0x20006000,
2386   NEON_SCVTF_imm = NEONShiftImmediateFixed | 0x0000E000,
2387   NEON_UCVTF_imm = NEONShiftImmediateFixed | 0x2000E000,
2388   NEON_FCVTZS_imm = NEONShiftImmediateFixed | 0x0000F800,
2389   NEON_FCVTZU_imm = NEONShiftImmediateFixed | 0x2000F800,
2390   NEON_SQSHL_imm = NEONShiftImmediateFixed | 0x00007000,
2391   NEON_UQSHL_imm = NEONShiftImmediateFixed | 0x20007000
2392 };
2393 
2394 // NEON table.
2395 enum NEONTableOp {
2396   NEONTableFixed = 0x0E000000,
2397   NEONTableFMask = 0xBF208C00,
2398   NEONTableExt   = 0x00001000,
2399   NEONTableMask  = 0xBF20FC00,
2400   NEON_TBL_1v    = NEONTableFixed | 0x00000000,
2401   NEON_TBL_2v    = NEONTableFixed | 0x00002000,
2402   NEON_TBL_3v    = NEONTableFixed | 0x00004000,
2403   NEON_TBL_4v    = NEONTableFixed | 0x00006000,
2404   NEON_TBX_1v    = NEON_TBL_1v | NEONTableExt,
2405   NEON_TBX_2v    = NEON_TBL_2v | NEONTableExt,
2406   NEON_TBX_3v    = NEON_TBL_3v | NEONTableExt,
2407   NEON_TBX_4v    = NEON_TBL_4v | NEONTableExt
2408 };
2409 
2410 // NEON perm.
2411 enum NEONPermOp {
2412   NEONPermFixed = 0x0E000800,
2413   NEONPermFMask = 0xBF208C00,
2414   NEONPermMask  = 0x3F20FC00,
2415   NEON_UZP1 = NEONPermFixed | 0x00001000,
2416   NEON_TRN1 = NEONPermFixed | 0x00002000,
2417   NEON_ZIP1 = NEONPermFixed | 0x00003000,
2418   NEON_UZP2 = NEONPermFixed | 0x00005000,
2419   NEON_TRN2 = NEONPermFixed | 0x00006000,
2420   NEON_ZIP2 = NEONPermFixed | 0x00007000
2421 };
2422 
2423 // NEON scalar instructions with two register operands.
2424 enum NEONScalar2RegMiscOp {
2425   NEONScalar2RegMiscFixed = 0x5E200800,
2426   NEONScalar2RegMiscFMask = 0xDF3E0C00,
2427   NEONScalar2RegMiscMask = NEON_Q | NEONScalar | NEON2RegMiscMask,
2428   NEON_CMGT_zero_scalar = NEON_Q | NEONScalar | NEON_CMGT_zero,
2429   NEON_CMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_CMEQ_zero,
2430   NEON_CMLT_zero_scalar = NEON_Q | NEONScalar | NEON_CMLT_zero,
2431   NEON_CMGE_zero_scalar = NEON_Q | NEONScalar | NEON_CMGE_zero,
2432   NEON_CMLE_zero_scalar = NEON_Q | NEONScalar | NEON_CMLE_zero,
2433   NEON_ABS_scalar       = NEON_Q | NEONScalar | NEON_ABS,
2434   NEON_SQABS_scalar     = NEON_Q | NEONScalar | NEON_SQABS,
2435   NEON_NEG_scalar       = NEON_Q | NEONScalar | NEON_NEG,
2436   NEON_SQNEG_scalar     = NEON_Q | NEONScalar | NEON_SQNEG,
2437   NEON_SQXTN_scalar     = NEON_Q | NEONScalar | NEON_SQXTN,
2438   NEON_UQXTN_scalar     = NEON_Q | NEONScalar | NEON_UQXTN,
2439   NEON_SQXTUN_scalar    = NEON_Q | NEONScalar | NEON_SQXTUN,
2440   NEON_SUQADD_scalar    = NEON_Q | NEONScalar | NEON_SUQADD,
2441   NEON_USQADD_scalar    = NEON_Q | NEONScalar | NEON_USQADD,
2442 
2443   NEONScalar2RegMiscOpcode = NEON2RegMiscOpcode,
2444   NEON_NEG_scalar_opcode = NEON_NEG_scalar & NEONScalar2RegMiscOpcode,
2445 
2446   NEONScalar2RegMiscFPMask  = NEONScalar2RegMiscMask | 0x00800000,
2447   NEON_FRSQRTE_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE,
2448   NEON_FRECPE_scalar     = NEON_Q | NEONScalar | NEON_FRECPE,
2449   NEON_SCVTF_scalar      = NEON_Q | NEONScalar | NEON_SCVTF,
2450   NEON_UCVTF_scalar      = NEON_Q | NEONScalar | NEON_UCVTF,
2451   NEON_FCMGT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_zero,
2452   NEON_FCMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_zero,
2453   NEON_FCMLT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_zero,
2454   NEON_FCMGE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_zero,
2455   NEON_FCMLE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_zero,
2456   NEON_FRECPX_scalar     = NEONScalar2RegMiscFixed | 0x0081F000,
2457   NEON_FCVTNS_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS,
2458   NEON_FCVTNU_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU,
2459   NEON_FCVTPS_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS,
2460   NEON_FCVTPU_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU,
2461   NEON_FCVTMS_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS,
2462   NEON_FCVTMU_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU,
2463   NEON_FCVTZS_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS,
2464   NEON_FCVTZU_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU,
2465   NEON_FCVTAS_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS,
2466   NEON_FCVTAU_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU,
2467   NEON_FCVTXN_scalar     = NEON_Q | NEONScalar | NEON_FCVTXN
2468 };
2469 
2470 // NEON instructions with two register operands (FP16).
2471 enum NEONScalar2RegMiscFP16Op {
2472   NEONScalar2RegMiscFP16Fixed = 0x5E780800,
2473   NEONScalar2RegMiscFP16FMask = 0xDF7E0C00,
2474   NEONScalar2RegMiscFP16Mask  = 0xFFFFFC00,
2475   NEON_FCVTNS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS_H,
2476   NEON_FCVTMS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS_H,
2477   NEON_FCVTAS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS_H,
2478   NEON_SCVTF_H_scalar      = NEON_Q | NEONScalar | NEON_SCVTF_H,
2479   NEON_FCMGT_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_H_zero,
2480   NEON_FCMEQ_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_H_zero,
2481   NEON_FCMLT_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_H_zero,
2482   NEON_FCVTPS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS_H,
2483   NEON_FCVTZS_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS_H,
2484   NEON_FRECPE_H_scalar     = NEON_Q | NEONScalar | NEON_FRECPE_H,
2485   NEON_FRECPX_H_scalar     = NEONScalar2RegMiscFP16Fixed | 0x0081F000,
2486   NEON_FCVTNU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU_H,
2487   NEON_FCVTMU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU_H,
2488   NEON_FCVTAU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU_H,
2489   NEON_UCVTF_H_scalar      = NEON_Q | NEONScalar | NEON_UCVTF_H,
2490   NEON_FCMGE_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_H_zero,
2491   NEON_FCMLE_H_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_H_zero,
2492   NEON_FCVTPU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU_H,
2493   NEON_FCVTZU_H_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU_H,
2494   NEON_FRSQRTE_H_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE_H
2495 };
2496 
2497 // NEON scalar instructions with three same-type operands.
2498 enum NEONScalar3SameOp {
2499   NEONScalar3SameFixed = 0x5E200400,
2500   NEONScalar3SameFMask = 0xDF200400,
2501   NEONScalar3SameMask  = 0xFF20FC00,
2502   NEON_ADD_scalar    = NEON_Q | NEONScalar | NEON_ADD,
2503   NEON_CMEQ_scalar   = NEON_Q | NEONScalar | NEON_CMEQ,
2504   NEON_CMGE_scalar   = NEON_Q | NEONScalar | NEON_CMGE,
2505   NEON_CMGT_scalar   = NEON_Q | NEONScalar | NEON_CMGT,
2506   NEON_CMHI_scalar   = NEON_Q | NEONScalar | NEON_CMHI,
2507   NEON_CMHS_scalar   = NEON_Q | NEONScalar | NEON_CMHS,
2508   NEON_CMTST_scalar  = NEON_Q | NEONScalar | NEON_CMTST,
2509   NEON_SUB_scalar    = NEON_Q | NEONScalar | NEON_SUB,
2510   NEON_UQADD_scalar  = NEON_Q | NEONScalar | NEON_UQADD,
2511   NEON_SQADD_scalar  = NEON_Q | NEONScalar | NEON_SQADD,
2512   NEON_UQSUB_scalar  = NEON_Q | NEONScalar | NEON_UQSUB,
2513   NEON_SQSUB_scalar  = NEON_Q | NEONScalar | NEON_SQSUB,
2514   NEON_USHL_scalar   = NEON_Q | NEONScalar | NEON_USHL,
2515   NEON_SSHL_scalar   = NEON_Q | NEONScalar | NEON_SSHL,
2516   NEON_UQSHL_scalar  = NEON_Q | NEONScalar | NEON_UQSHL,
2517   NEON_SQSHL_scalar  = NEON_Q | NEONScalar | NEON_SQSHL,
2518   NEON_URSHL_scalar  = NEON_Q | NEONScalar | NEON_URSHL,
2519   NEON_SRSHL_scalar  = NEON_Q | NEONScalar | NEON_SRSHL,
2520   NEON_UQRSHL_scalar = NEON_Q | NEONScalar | NEON_UQRSHL,
2521   NEON_SQRSHL_scalar = NEON_Q | NEONScalar | NEON_SQRSHL,
2522   NEON_SQDMULH_scalar = NEON_Q | NEONScalar | NEON_SQDMULH,
2523   NEON_SQRDMULH_scalar = NEON_Q | NEONScalar | NEON_SQRDMULH,
2524 
2525   // NEON floating point scalar instructions with three same-type operands.
2526   NEONScalar3SameFPFixed = NEONScalar3SameFixed | 0x0000C000,
2527   NEONScalar3SameFPFMask = NEONScalar3SameFMask | 0x0000C000,
2528   NEONScalar3SameFPMask  = NEONScalar3SameMask | 0x00800000,
2529   NEON_FACGE_scalar   = NEON_Q | NEONScalar | NEON_FACGE,
2530   NEON_FACGT_scalar   = NEON_Q | NEONScalar | NEON_FACGT,
2531   NEON_FCMEQ_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ,
2532   NEON_FCMGE_scalar   = NEON_Q | NEONScalar | NEON_FCMGE,
2533   NEON_FCMGT_scalar   = NEON_Q | NEONScalar | NEON_FCMGT,
2534   NEON_FMULX_scalar   = NEON_Q | NEONScalar | NEON_FMULX,
2535   NEON_FRECPS_scalar  = NEON_Q | NEONScalar | NEON_FRECPS,
2536   NEON_FRSQRTS_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS,
2537   NEON_FABD_scalar    = NEON_Q | NEONScalar | NEON_FABD
2538 };
2539 
2540 // NEON scalar FP16 instructions with three same-type operands.
2541 enum NEONScalar3SameFP16Op {
2542   NEONScalar3SameFP16Fixed = 0x5E400400,
2543   NEONScalar3SameFP16FMask = 0xDF60C400,
2544   NEONScalar3SameFP16Mask  = 0xFFE0FC00,
2545   NEON_FABD_H_scalar    = NEON_Q | NEONScalar | NEON_FABD_H,
2546   NEON_FMULX_H_scalar   = NEON_Q | NEONScalar | NEON_FMULX_H,
2547   NEON_FCMEQ_H_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ_H,
2548   NEON_FCMGE_H_scalar   = NEON_Q | NEONScalar | NEON_FCMGE_H,
2549   NEON_FCMGT_H_scalar   = NEON_Q | NEONScalar | NEON_FCMGT_H,
2550   NEON_FACGE_H_scalar   = NEON_Q | NEONScalar | NEON_FACGE_H,
2551   NEON_FACGT_H_scalar   = NEON_Q | NEONScalar | NEON_FACGT_H,
2552   NEON_FRECPS_H_scalar  = NEON_Q | NEONScalar | NEON_FRECPS_H,
2553   NEON_FRSQRTS_H_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS_H
2554 };
2555 
2556 // 'Extra' NEON scalar instructions with three same-type operands.
2557 enum NEONScalar3SameExtraOp {
2558   NEONScalar3SameExtraFixed = 0x5E008400,
2559   NEONScalar3SameExtraFMask = 0xDF208400,
2560   NEONScalar3SameExtraMask = 0xFF20FC00,
2561   NEON_SQRDMLAH_scalar = NEON_Q | NEONScalar | NEON_SQRDMLAH,
2562   NEON_SQRDMLSH_scalar = NEON_Q | NEONScalar | NEON_SQRDMLSH
2563 };
2564 
2565 // NEON scalar instructions with three different-type operands.
2566 enum NEONScalar3DiffOp {
2567   NEONScalar3DiffFixed = 0x5E200000,
2568   NEONScalar3DiffFMask = 0xDF200C00,
2569   NEONScalar3DiffMask  = NEON_Q | NEONScalar | NEON3DifferentMask,
2570   NEON_SQDMLAL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL,
2571   NEON_SQDMLSL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL,
2572   NEON_SQDMULL_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL
2573 };
2574 
2575 // NEON scalar instructions with indexed element operand.
2576 enum NEONScalarByIndexedElementOp {
2577   NEONScalarByIndexedElementFixed = 0x5F000000,
2578   NEONScalarByIndexedElementFMask = 0xDF000400,
2579   NEONScalarByIndexedElementMask  = 0xFF00F400,
2580   NEON_SQDMLAL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL_byelement,
2581   NEON_SQDMLSL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL_byelement,
2582   NEON_SQDMULL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL_byelement,
2583   NEON_SQDMULH_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULH_byelement,
2584   NEON_SQRDMULH_byelement_scalar
2585     = NEON_Q | NEONScalar | NEON_SQRDMULH_byelement,
2586   NEON_SQRDMLAH_byelement_scalar
2587     = NEON_Q | NEONScalar | NEON_SQRDMLAH_byelement,
2588   NEON_SQRDMLSH_byelement_scalar
2589     = NEON_Q | NEONScalar | NEON_SQRDMLSH_byelement,
2590   NEON_FMLA_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_H_byelement,
2591   NEON_FMLS_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_H_byelement,
2592   NEON_FMUL_H_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_H_byelement,
2593   NEON_FMULX_H_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_H_byelement,
2594 
2595   // Floating point instructions.
2596   NEONScalarByIndexedElementFPFixed
2597     = NEONScalarByIndexedElementFixed | 0x00800000,
2598   NEONScalarByIndexedElementFPMask
2599     = NEONScalarByIndexedElementMask | 0x00800000,
2600   NEON_FMLA_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_byelement,
2601   NEON_FMLS_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_byelement,
2602   NEON_FMUL_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_byelement,
2603   NEON_FMULX_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_byelement
2604 };
2605 
2606 // NEON scalar register copy.
2607 enum NEONScalarCopyOp {
2608   NEONScalarCopyFixed = 0x5E000400,
2609   NEONScalarCopyFMask = 0xDFE08400,
2610   NEONScalarCopyMask  = 0xFFE0FC00,
2611   NEON_DUP_ELEMENT_scalar = NEON_Q | NEONScalar | NEON_DUP_ELEMENT
2612 };
2613 
2614 // NEON scalar pairwise instructions.
2615 enum NEONScalarPairwiseOp {
2616   NEONScalarPairwiseFixed = 0x5E300800,
2617   NEONScalarPairwiseFMask = 0xDF3E0C00,
2618   NEONScalarPairwiseMask  = 0xFFB1F800,
2619   NEON_ADDP_scalar      = NEONScalarPairwiseFixed | 0x0081B000,
2620   NEON_FMAXNMP_h_scalar = NEONScalarPairwiseFixed | 0x0000C000,
2621   NEON_FADDP_h_scalar   = NEONScalarPairwiseFixed | 0x0000D000,
2622   NEON_FMAXP_h_scalar   = NEONScalarPairwiseFixed | 0x0000F000,
2623   NEON_FMINNMP_h_scalar = NEONScalarPairwiseFixed | 0x0080C000,
2624   NEON_FMINP_h_scalar   = NEONScalarPairwiseFixed | 0x0080F000,
2625   NEON_FMAXNMP_scalar   = NEONScalarPairwiseFixed | 0x2000C000,
2626   NEON_FMINNMP_scalar   = NEONScalarPairwiseFixed | 0x2080C000,
2627   NEON_FADDP_scalar     = NEONScalarPairwiseFixed | 0x2000D000,
2628   NEON_FMAXP_scalar     = NEONScalarPairwiseFixed | 0x2000F000,
2629   NEON_FMINP_scalar     = NEONScalarPairwiseFixed | 0x2080F000
2630 };
2631 
2632 // NEON scalar shift immediate.
2633 enum NEONScalarShiftImmediateOp {
2634   NEONScalarShiftImmediateFixed = 0x5F000400,
2635   NEONScalarShiftImmediateFMask = 0xDF800400,
2636   NEONScalarShiftImmediateMask  = 0xFF80FC00,
2637   NEON_SHL_scalar  =       NEON_Q | NEONScalar | NEON_SHL,
2638   NEON_SLI_scalar  =       NEON_Q | NEONScalar | NEON_SLI,
2639   NEON_SRI_scalar  =       NEON_Q | NEONScalar | NEON_SRI,
2640   NEON_SSHR_scalar =       NEON_Q | NEONScalar | NEON_SSHR,
2641   NEON_USHR_scalar =       NEON_Q | NEONScalar | NEON_USHR,
2642   NEON_SRSHR_scalar =      NEON_Q | NEONScalar | NEON_SRSHR,
2643   NEON_URSHR_scalar =      NEON_Q | NEONScalar | NEON_URSHR,
2644   NEON_SSRA_scalar =       NEON_Q | NEONScalar | NEON_SSRA,
2645   NEON_USRA_scalar =       NEON_Q | NEONScalar | NEON_USRA,
2646   NEON_SRSRA_scalar =      NEON_Q | NEONScalar | NEON_SRSRA,
2647   NEON_URSRA_scalar =      NEON_Q | NEONScalar | NEON_URSRA,
2648   NEON_UQSHRN_scalar =     NEON_Q | NEONScalar | NEON_UQSHRN,
2649   NEON_UQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_UQRSHRN,
2650   NEON_SQSHRN_scalar =     NEON_Q | NEONScalar | NEON_SQSHRN,
2651   NEON_SQRSHRN_scalar =    NEON_Q | NEONScalar | NEON_SQRSHRN,
2652   NEON_SQSHRUN_scalar =    NEON_Q | NEONScalar | NEON_SQSHRUN,
2653   NEON_SQRSHRUN_scalar =   NEON_Q | NEONScalar | NEON_SQRSHRUN,
2654   NEON_SQSHLU_scalar =     NEON_Q | NEONScalar | NEON_SQSHLU,
2655   NEON_SQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_SQSHL_imm,
2656   NEON_UQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_UQSHL_imm,
2657   NEON_SCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_SCVTF_imm,
2658   NEON_UCVTF_imm_scalar =  NEON_Q | NEONScalar | NEON_UCVTF_imm,
2659   NEON_FCVTZS_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZS_imm,
2660   NEON_FCVTZU_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZU_imm
2661 };
2662 
2663 enum ReservedOp {
2664   ReservedFixed = 0x00000000,
2665   ReservedFMask = 0x1E000000,
2666   ReservedMask = 0xFFFF0000,
2667 
2668   UDF = ReservedFixed | 0x00000000
2669 };
2670 
2671 // Unimplemented and unallocated instructions. These are defined to make fixed
2672 // bit assertion easier.
2673 enum UnimplementedOp {
2674   UnimplementedFixed = 0x00000000,
2675   UnimplementedFMask = 0x00000000
2676 };
2677 
2678 enum UnallocatedOp {
2679   UnallocatedFixed = 0x00000000,
2680   UnallocatedFMask = 0x00000000
2681 };
2682 
2683 // Re-enable `clang-format` after the `enum`s.
2684 // clang-format on
2685 
2686 }  // namespace aarch64
2687 }  // namespace vixl
2688 
2689 #endif  // VIXL_AARCH64_CONSTANTS_AARCH64_H_
2690