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26 
27 #ifndef VIXL_A64_CONSTANTS_A64_H_
28 #define VIXL_A64_CONSTANTS_A64_H_
29 
30 #include <stdint.h>
31 
32 #include "jit/arm64/vixl/Globals-vixl.h"
33 
34 namespace vixl {
35 
36 // Supervisor Call (svc) specific support.
37 //
38 // The SVC instruction encodes an optional 16-bit immediate value.
39 // The simulator understands the codes below.
40 enum SVCSimulatorCodes {
41   kCallRtRedirected = 0x10,  // Transition to x86_64 C code.
42   kMarkStackPointer = 0x11,  // Push the current SP on a special Simulator stack.
43   kCheckStackPointer = 0x12  // Pop from the special Simulator stack and compare to SP.
44 };
45 
46 const unsigned kNumberOfRegisters = 32;
47 const unsigned kNumberOfVRegisters = 32;
48 const unsigned kNumberOfFPRegisters = kNumberOfVRegisters;
49 // Callee saved registers are x21-x30(lr).
50 const int kNumberOfCalleeSavedRegisters = 10;
51 const int kFirstCalleeSavedRegisterIndex = 21;
52 // Callee saved FP registers are d8-d15.
53 const int kNumberOfCalleeSavedFPRegisters = 8;
54 const int kFirstCalleeSavedFPRegisterIndex = 8;
55 
56 #define REGISTER_CODE_LIST(R)                                                  \
57 R(0)  R(1)  R(2)  R(3)  R(4)  R(5)  R(6)  R(7)                                 \
58 R(8)  R(9)  R(10) R(11) R(12) R(13) R(14) R(15)                                \
59 R(16) R(17) R(18) R(19) R(20) R(21) R(22) R(23)                                \
60 R(24) R(25) R(26) R(27) R(28) R(29) R(30) R(31)
61 
62 #define INSTRUCTION_FIELDS_LIST(V_)                                            \
63 /* Register fields */                                                          \
64 V_(Rd, 4, 0, Bits)                        /* Destination register.        */   \
65 V_(Rn, 9, 5, Bits)                        /* First source register.       */   \
66 V_(Rm, 20, 16, Bits)                      /* Second source register.      */   \
67 V_(Ra, 14, 10, Bits)                      /* Third source register.       */   \
68 V_(Rt, 4, 0, Bits)                        /* Load/store register.         */   \
69 V_(Rt2, 14, 10, Bits)                     /* Load/store second register.  */   \
70 V_(Rs, 20, 16, Bits)                      /* Exclusive access status.     */   \
71                                                                                \
72 /* Common bits */                                                              \
73 V_(SixtyFourBits, 31, 31, Bits)                                                \
74 V_(FlagsUpdate, 29, 29, Bits)                                                  \
75                                                                                \
76 /* PC relative addressing */                                                   \
77 V_(ImmPCRelHi, 23, 5, SignedBits)                                              \
78 V_(ImmPCRelLo, 30, 29, Bits)                                                   \
79                                                                                \
80 /* Add/subtract/logical shift register */                                      \
81 V_(ShiftDP, 23, 22, Bits)                                                      \
82 V_(ImmDPShift, 15, 10, Bits)                                                   \
83                                                                                \
84 /* Add/subtract immediate */                                                   \
85 V_(ImmAddSub, 21, 10, Bits)                                                    \
86 V_(ShiftAddSub, 23, 22, Bits)                                                  \
87                                                                                \
88 /* Add/substract extend */                                                     \
89 V_(ImmExtendShift, 12, 10, Bits)                                               \
90 V_(ExtendMode, 15, 13, Bits)                                                   \
91                                                                                \
92 /* Move wide */                                                                \
93 V_(ImmMoveWide, 20, 5, Bits)                                                   \
94 V_(ShiftMoveWide, 22, 21, Bits)                                                \
95                                                                                \
96 /* Logical immediate, bitfield and extract */                                  \
97 V_(BitN, 22, 22, Bits)                                                         \
98 V_(ImmRotate, 21, 16, Bits)                                                    \
99 V_(ImmSetBits, 15, 10, Bits)                                                   \
100 V_(ImmR, 21, 16, Bits)                                                         \
101 V_(ImmS, 15, 10, Bits)                                                         \
102                                                                                \
103 /* Test and branch immediate */                                                \
104 V_(ImmTestBranch, 18, 5, SignedBits)                                           \
105 V_(ImmTestBranchBit40, 23, 19, Bits)                                           \
106 V_(ImmTestBranchBit5, 31, 31, Bits)                                            \
107                                                                                \
108 /* Conditionals */                                                             \
109 V_(Condition, 15, 12, Bits)                                                    \
110 V_(ConditionBranch, 3, 0, Bits)                                                \
111 V_(Nzcv, 3, 0, Bits)                                                           \
112 V_(ImmCondCmp, 20, 16, Bits)                                                   \
113 V_(ImmCondBranch, 23, 5, SignedBits)                                           \
114                                                                                \
115 /* Floating point */                                                           \
116 V_(FPType, 23, 22, Bits)                                                       \
117 V_(ImmFP, 20, 13, Bits)                                                        \
118 V_(FPScale, 15, 10, Bits)                                                      \
119                                                                                \
120 /* Load Store */                                                               \
121 V_(ImmLS, 20, 12, SignedBits)                                                  \
122 V_(ImmLSUnsigned, 21, 10, Bits)                                                \
123 V_(ImmLSPair, 21, 15, SignedBits)                                              \
124 V_(ImmShiftLS, 12, 12, Bits)                                                   \
125 V_(LSOpc, 23, 22, Bits)                                                        \
126 V_(LSVector, 26, 26, Bits)                                                     \
127 V_(LSSize, 31, 30, Bits)                                                       \
128 V_(ImmPrefetchOperation, 4, 0, Bits)                                           \
129 V_(PrefetchHint, 4, 3, Bits)                                                   \
130 V_(PrefetchTarget, 2, 1, Bits)                                                 \
131 V_(PrefetchStream, 0, 0, Bits)                                                 \
132                                                                                \
133 /* Other immediates */                                                         \
134 V_(ImmUncondBranch, 25, 0, SignedBits)                                         \
135 V_(ImmCmpBranch, 23, 5, SignedBits)                                            \
136 V_(ImmLLiteral, 23, 5, SignedBits)                                             \
137 V_(ImmException, 20, 5, Bits)                                                  \
138 V_(ImmHint, 11, 5, Bits)                                                       \
139 V_(ImmBarrierDomain, 11, 10, Bits)                                             \
140 V_(ImmBarrierType, 9, 8, Bits)                                                 \
141                                                                                \
142 /* System (MRS, MSR, SYS) */                                                   \
143 V_(ImmSystemRegister, 19, 5, Bits)                                             \
144 V_(SysO0, 19, 19, Bits)                                                        \
145 V_(SysOp, 18, 5, Bits)                                                         \
146 V_(SysOp1, 18, 16, Bits)                                                       \
147 V_(SysOp2, 7, 5, Bits)                                                         \
148 V_(CRn, 15, 12, Bits)                                                          \
149 V_(CRm, 11, 8, Bits)                                                           \
150                                                                                \
151 /* Load-/store-exclusive */                                                    \
152 V_(LdStXLoad, 22, 22, Bits)                                                    \
153 V_(LdStXNotExclusive, 23, 23, Bits)                                            \
154 V_(LdStXAcquireRelease, 15, 15, Bits)                                          \
155 V_(LdStXSizeLog2, 31, 30, Bits)                                                \
156 V_(LdStXPair, 21, 21, Bits)                                                    \
157                                                                                \
158 /* NEON generic fields */                                                      \
159 V_(NEONQ, 30, 30, Bits)                                                        \
160 V_(NEONSize, 23, 22, Bits)                                                     \
161 V_(NEONLSSize, 11, 10, Bits)                                                   \
162 V_(NEONS, 12, 12, Bits)                                                        \
163 V_(NEONL, 21, 21, Bits)                                                        \
164 V_(NEONM, 20, 20, Bits)                                                        \
165 V_(NEONH, 11, 11, Bits)                                                        \
166 V_(ImmNEONExt, 14, 11, Bits)                                                   \
167 V_(ImmNEON5, 20, 16, Bits)                                                     \
168 V_(ImmNEON4, 14, 11, Bits)                                                     \
169                                                                                \
170 /* NEON Modified Immediate fields */                                           \
171 V_(ImmNEONabc, 18, 16, Bits)                                                   \
172 V_(ImmNEONdefgh, 9, 5, Bits)                                                   \
173 V_(NEONModImmOp, 29, 29, Bits)                                                 \
174 V_(NEONCmode, 15, 12, Bits)                                                    \
175                                                                                \
176 /* NEON Shift Immediate fields */                                              \
177 V_(ImmNEONImmhImmb, 22, 16, Bits)                                              \
178 V_(ImmNEONImmh, 22, 19, Bits)                                                  \
179 V_(ImmNEONImmb, 18, 16, Bits)
180 
181 #define SYSTEM_REGISTER_FIELDS_LIST(V_, M_)                                    \
182 /* NZCV */                                                                     \
183 V_(Flags, 31, 28, Bits)                                                        \
184 V_(N, 31, 31, Bits)                                                            \
185 V_(Z, 30, 30, Bits)                                                            \
186 V_(C, 29, 29, Bits)                                                            \
187 V_(V, 28, 28, Bits)                                                            \
188 M_(NZCV, Flags_mask)                                                           \
189 /* FPCR */                                                                     \
190 V_(AHP, 26, 26, Bits)                                                          \
191 V_(DN, 25, 25, Bits)                                                           \
192 V_(FZ, 24, 24, Bits)                                                           \
193 V_(RMode, 23, 22, Bits)                                                        \
194 M_(FPCR, AHP_mask | DN_mask | FZ_mask | RMode_mask)
195 
196 // Fields offsets.
197 #define DECLARE_FIELDS_OFFSETS(Name, HighBit, LowBit, X)                       \
198 const int Name##_offset = LowBit;                                              \
199 const int Name##_width = HighBit - LowBit + 1;                                 \
200 const uint32_t Name##_mask = ((1 << Name##_width) - 1) << LowBit;
201 #define NOTHING(A, B)
202 INSTRUCTION_FIELDS_LIST(DECLARE_FIELDS_OFFSETS)
203 SYSTEM_REGISTER_FIELDS_LIST(DECLARE_FIELDS_OFFSETS, NOTHING)
204 #undef NOTHING
205 #undef DECLARE_FIELDS_BITS
206 
207 // ImmPCRel is a compound field (not present in INSTRUCTION_FIELDS_LIST), formed
208 // from ImmPCRelLo and ImmPCRelHi.
209 const int ImmPCRel_mask = ImmPCRelLo_mask | ImmPCRelHi_mask;
210 
211 // Condition codes.
212 enum Condition {
213   eq = 0,   // Z set            Equal.
214   ne = 1,   // Z clear          Not equal.
215   cs = 2,   // C set            Carry set.
216   cc = 3,   // C clear          Carry clear.
217   mi = 4,   // N set            Negative.
218   pl = 5,   // N clear          Positive or zero.
219   vs = 6,   // V set            Overflow.
220   vc = 7,   // V clear          No overflow.
221   hi = 8,   // C set, Z clear   Unsigned higher.
222   ls = 9,   // C clear or Z set Unsigned lower or same.
223   ge = 10,  // N == V           Greater or equal.
224   lt = 11,  // N != V           Less than.
225   gt = 12,  // Z clear, N == V  Greater than.
226   le = 13,  // Z set or N != V  Less then or equal
227   al = 14,  //                  Always.
228   nv = 15,  // Behaves as always/al.
229 
230   // Aliases.
231   hs = cs,  // C set            Unsigned higher or same.
232   lo = cc,  // C clear          Unsigned lower.
233 
234   // Mozilla expanded aliases.
235   Equal = 0, Zero = 0,
236   NotEqual = 1, NonZero = 1,
237   AboveOrEqual = 2, CarrySet = 2,
238   Below = 3, CarryClear = 3,
239   Signed = 4,
240   NotSigned = 5,
241   Overflow = 6,
242   NoOverflow = 7,
243   Above = 8,
244   BelowOrEqual = 9,
245   GreaterThanOrEqual_ = 10,
246   LessThan_ = 11,
247   GreaterThan_ = 12,
248   LessThanOrEqual_ = 13,
249   Always = 14,
250   Never = 15
251 };
252 
InvertCondition(Condition cond)253 inline Condition InvertCondition(Condition cond) {
254   // Conditions al and nv behave identically, as "always true". They can't be
255   // inverted, because there is no "always false" condition.
256   VIXL_ASSERT((cond != al) && (cond != nv));
257   return static_cast<Condition>(cond ^ 1);
258 }
259 
260 enum FPTrapFlags {
261   EnableTrap   = 1,
262   DisableTrap = 0
263 };
264 
265 enum FlagsUpdate {
266   SetFlags   = 1,
267   LeaveFlags = 0
268 };
269 
270 enum StatusFlags {
271   NoFlag    = 0,
272 
273   // Derive the flag combinations from the system register bit descriptions.
274   NFlag     = N_mask,
275   ZFlag     = Z_mask,
276   CFlag     = C_mask,
277   VFlag     = V_mask,
278   NZFlag    = NFlag | ZFlag,
279   NCFlag    = NFlag | CFlag,
280   NVFlag    = NFlag | VFlag,
281   ZCFlag    = ZFlag | CFlag,
282   ZVFlag    = ZFlag | VFlag,
283   CVFlag    = CFlag | VFlag,
284   NZCFlag   = NFlag | ZFlag | CFlag,
285   NZVFlag   = NFlag | ZFlag | VFlag,
286   NCVFlag   = NFlag | CFlag | VFlag,
287   ZCVFlag   = ZFlag | CFlag | VFlag,
288   NZCVFlag  = NFlag | ZFlag | CFlag | VFlag,
289 
290   // Floating-point comparison results.
291   FPEqualFlag       = ZCFlag,
292   FPLessThanFlag    = NFlag,
293   FPGreaterThanFlag = CFlag,
294   FPUnorderedFlag   = CVFlag
295 };
296 
297 enum Shift {
298   NO_SHIFT = -1,
299   LSL = 0x0,
300   LSR = 0x1,
301   ASR = 0x2,
302   ROR = 0x3,
303   MSL = 0x4
304 };
305 
306 enum Extend {
307   NO_EXTEND = -1,
308   UXTB      = 0,
309   UXTH      = 1,
310   UXTW      = 2,
311   UXTX      = 3,
312   SXTB      = 4,
313   SXTH      = 5,
314   SXTW      = 6,
315   SXTX      = 7
316 };
317 
318 enum SystemHint {
319   NOP   = 0,
320   YIELD = 1,
321   WFE   = 2,
322   WFI   = 3,
323   SEV   = 4,
324   SEVL  = 5
325 };
326 
327 enum BarrierDomain {
328   OuterShareable = 0,
329   NonShareable   = 1,
330   InnerShareable = 2,
331   FullSystem     = 3
332 };
333 
334 enum BarrierType {
335   BarrierOther  = 0,
336   BarrierReads  = 1,
337   BarrierWrites = 2,
338   BarrierAll    = 3
339 };
340 
341 enum PrefetchOperation {
342   PLDL1KEEP = 0x00,
343   PLDL1STRM = 0x01,
344   PLDL2KEEP = 0x02,
345   PLDL2STRM = 0x03,
346   PLDL3KEEP = 0x04,
347   PLDL3STRM = 0x05,
348 
349   PLIL1KEEP = 0x08,
350   PLIL1STRM = 0x09,
351   PLIL2KEEP = 0x0a,
352   PLIL2STRM = 0x0b,
353   PLIL3KEEP = 0x0c,
354   PLIL3STRM = 0x0d,
355 
356   PSTL1KEEP = 0x10,
357   PSTL1STRM = 0x11,
358   PSTL2KEEP = 0x12,
359   PSTL2STRM = 0x13,
360   PSTL3KEEP = 0x14,
361   PSTL3STRM = 0x15
362 };
363 
364 // System/special register names.
365 // This information is not encoded as one field but as the concatenation of
366 // multiple fields (Op0<0>, Op1, Crn, Crm, Op2).
367 enum SystemRegister {
368   NZCV = ((0x1 << SysO0_offset) |
369           (0x3 << SysOp1_offset) |
370           (0x4 << CRn_offset) |
371           (0x2 << CRm_offset) |
372           (0x0 << SysOp2_offset)) >> ImmSystemRegister_offset,
373   FPCR = ((0x1 << SysO0_offset) |
374           (0x3 << SysOp1_offset) |
375           (0x4 << CRn_offset) |
376           (0x4 << CRm_offset) |
377           (0x0 << SysOp2_offset)) >> ImmSystemRegister_offset
378 };
379 
380 enum InstructionCacheOp {
381   IVAU = ((0x3 << SysOp1_offset) |
382           (0x7 << CRn_offset) |
383           (0x5 << CRm_offset) |
384           (0x1 << SysOp2_offset)) >> SysOp_offset
385 };
386 
387 enum DataCacheOp {
388   CVAC  = ((0x3 << SysOp1_offset) |
389            (0x7 << CRn_offset) |
390            (0xa << CRm_offset) |
391            (0x1 << SysOp2_offset)) >> SysOp_offset,
392   CVAU  = ((0x3 << SysOp1_offset) |
393            (0x7 << CRn_offset) |
394            (0xb << CRm_offset) |
395            (0x1 << SysOp2_offset)) >> SysOp_offset,
396   CIVAC = ((0x3 << SysOp1_offset) |
397            (0x7 << CRn_offset) |
398            (0xe << CRm_offset) |
399            (0x1 << SysOp2_offset)) >> SysOp_offset,
400   ZVA   = ((0x3 << SysOp1_offset) |
401            (0x7 << CRn_offset) |
402            (0x4 << CRm_offset) |
403            (0x1 << SysOp2_offset)) >> SysOp_offset
404 };
405 
406 // Instruction enumerations.
407 //
408 // These are the masks that define a class of instructions, and the list of
409 // instructions within each class. Each enumeration has a Fixed, FMask and
410 // Mask value.
411 //
412 // Fixed: The fixed bits in this instruction class.
413 // FMask: The mask used to extract the fixed bits in the class.
414 // Mask:  The mask used to identify the instructions within a class.
415 //
416 // The enumerations can be used like this:
417 //
418 // VIXL_ASSERT(instr->Mask(PCRelAddressingFMask) == PCRelAddressingFixed);
419 // switch(instr->Mask(PCRelAddressingMask)) {
420 //   case ADR:  Format("adr 'Xd, 'AddrPCRelByte"); break;
421 //   case ADRP: Format("adrp 'Xd, 'AddrPCRelPage"); break;
422 //   default:   printf("Unknown instruction\n");
423 // }
424 
425 
426 // Generic fields.
427 enum GenericInstrField {
428   SixtyFourBits        = 0x80000000,
429   ThirtyTwoBits        = 0x00000000,
430   FP32                 = 0x00000000,
431   FP64                 = 0x00400000
432 };
433 
434 enum NEONFormatField {
435   NEONFormatFieldMask   = 0x40C00000,
436   NEON_Q                = 0x40000000,
437   NEON_8B               = 0x00000000,
438   NEON_16B              = NEON_8B | NEON_Q,
439   NEON_4H               = 0x00400000,
440   NEON_8H               = NEON_4H | NEON_Q,
441   NEON_2S               = 0x00800000,
442   NEON_4S               = NEON_2S | NEON_Q,
443   NEON_1D               = 0x00C00000,
444   NEON_2D               = 0x00C00000 | NEON_Q
445 };
446 
447 enum NEONFPFormatField {
448   NEONFPFormatFieldMask = 0x40400000,
449   NEON_FP_2S            = FP32,
450   NEON_FP_4S            = FP32 | NEON_Q,
451   NEON_FP_2D            = FP64 | NEON_Q
452 };
453 
454 enum NEONLSFormatField {
455   NEONLSFormatFieldMask = 0x40000C00,
456   LS_NEON_8B            = 0x00000000,
457   LS_NEON_16B           = LS_NEON_8B | NEON_Q,
458   LS_NEON_4H            = 0x00000400,
459   LS_NEON_8H            = LS_NEON_4H | NEON_Q,
460   LS_NEON_2S            = 0x00000800,
461   LS_NEON_4S            = LS_NEON_2S | NEON_Q,
462   LS_NEON_1D            = 0x00000C00,
463   LS_NEON_2D            = LS_NEON_1D | NEON_Q
464 };
465 
466 enum NEONScalarFormatField {
467   NEONScalarFormatFieldMask = 0x00C00000,
468   NEONScalar                = 0x10000000,
469   NEON_B                    = 0x00000000,
470   NEON_H                    = 0x00400000,
471   NEON_S                    = 0x00800000,
472   NEON_D                    = 0x00C00000
473 };
474 
475 // PC relative addressing.
476 enum PCRelAddressingOp {
477   PCRelAddressingFixed = 0x10000000,
478   PCRelAddressingFMask = 0x1F000000,
479   PCRelAddressingMask  = 0x9F000000,
480   ADR                  = PCRelAddressingFixed | 0x00000000,
481   ADRP                 = PCRelAddressingFixed | 0x80000000
482 };
483 
484 // Add/sub (immediate, shifted and extended.)
485 const int kSFOffset = 31;
486 enum AddSubOp {
487   AddSubOpMask      = 0x60000000,
488   AddSubSetFlagsBit = 0x20000000,
489   ADD               = 0x00000000,
490   ADDS              = ADD | AddSubSetFlagsBit,
491   SUB               = 0x40000000,
492   SUBS              = SUB | AddSubSetFlagsBit
493 };
494 
495 #define ADD_SUB_OP_LIST(V)  \
496   V(ADD),                   \
497   V(ADDS),                  \
498   V(SUB),                   \
499   V(SUBS)
500 
501 enum AddSubImmediateOp {
502   AddSubImmediateFixed = 0x11000000,
503   AddSubImmediateFMask = 0x1F000000,
504   AddSubImmediateMask  = 0xFF000000,
505   #define ADD_SUB_IMMEDIATE(A)           \
506   A##_w_imm = AddSubImmediateFixed | A,  \
507   A##_x_imm = AddSubImmediateFixed | A | SixtyFourBits
508   ADD_SUB_OP_LIST(ADD_SUB_IMMEDIATE)
509   #undef ADD_SUB_IMMEDIATE
510 };
511 
512 enum AddSubShiftedOp {
513   AddSubShiftedFixed   = 0x0B000000,
514   AddSubShiftedFMask   = 0x1F200000,
515   AddSubShiftedMask    = 0xFF200000,
516   #define ADD_SUB_SHIFTED(A)             \
517   A##_w_shift = AddSubShiftedFixed | A,  \
518   A##_x_shift = AddSubShiftedFixed | A | SixtyFourBits
519   ADD_SUB_OP_LIST(ADD_SUB_SHIFTED)
520   #undef ADD_SUB_SHIFTED
521 };
522 
523 enum AddSubExtendedOp {
524   AddSubExtendedFixed  = 0x0B200000,
525   AddSubExtendedFMask  = 0x1F200000,
526   AddSubExtendedMask   = 0xFFE00000,
527   #define ADD_SUB_EXTENDED(A)           \
528   A##_w_ext = AddSubExtendedFixed | A,  \
529   A##_x_ext = AddSubExtendedFixed | A | SixtyFourBits
530   ADD_SUB_OP_LIST(ADD_SUB_EXTENDED)
531   #undef ADD_SUB_EXTENDED
532 };
533 
534 // Add/sub with carry.
535 enum AddSubWithCarryOp {
536   AddSubWithCarryFixed = 0x1A000000,
537   AddSubWithCarryFMask = 0x1FE00000,
538   AddSubWithCarryMask  = 0xFFE0FC00,
539   ADC_w                = AddSubWithCarryFixed | ADD,
540   ADC_x                = AddSubWithCarryFixed | ADD | SixtyFourBits,
541   ADC                  = ADC_w,
542   ADCS_w               = AddSubWithCarryFixed | ADDS,
543   ADCS_x               = AddSubWithCarryFixed | ADDS | SixtyFourBits,
544   SBC_w                = AddSubWithCarryFixed | SUB,
545   SBC_x                = AddSubWithCarryFixed | SUB | SixtyFourBits,
546   SBC                  = SBC_w,
547   SBCS_w               = AddSubWithCarryFixed | SUBS,
548   SBCS_x               = AddSubWithCarryFixed | SUBS | SixtyFourBits
549 };
550 
551 
552 // Logical (immediate and shifted register).
553 enum LogicalOp {
554   LogicalOpMask = 0x60200000,
555   NOT   = 0x00200000,
556   AND   = 0x00000000,
557   BIC   = AND | NOT,
558   ORR   = 0x20000000,
559   ORN   = ORR | NOT,
560   EOR   = 0x40000000,
561   EON   = EOR | NOT,
562   ANDS  = 0x60000000,
563   BICS  = ANDS | NOT
564 };
565 
566 // Logical immediate.
567 enum LogicalImmediateOp {
568   LogicalImmediateFixed = 0x12000000,
569   LogicalImmediateFMask = 0x1F800000,
570   LogicalImmediateMask  = 0xFF800000,
571   AND_w_imm   = LogicalImmediateFixed | AND,
572   AND_x_imm   = LogicalImmediateFixed | AND | SixtyFourBits,
573   ORR_w_imm   = LogicalImmediateFixed | ORR,
574   ORR_x_imm   = LogicalImmediateFixed | ORR | SixtyFourBits,
575   EOR_w_imm   = LogicalImmediateFixed | EOR,
576   EOR_x_imm   = LogicalImmediateFixed | EOR | SixtyFourBits,
577   ANDS_w_imm  = LogicalImmediateFixed | ANDS,
578   ANDS_x_imm  = LogicalImmediateFixed | ANDS | SixtyFourBits
579 };
580 
581 // Logical shifted register.
582 enum LogicalShiftedOp {
583   LogicalShiftedFixed = 0x0A000000,
584   LogicalShiftedFMask = 0x1F000000,
585   LogicalShiftedMask  = 0xFF200000,
586   AND_w               = LogicalShiftedFixed | AND,
587   AND_x               = LogicalShiftedFixed | AND | SixtyFourBits,
588   AND_shift           = AND_w,
589   BIC_w               = LogicalShiftedFixed | BIC,
590   BIC_x               = LogicalShiftedFixed | BIC | SixtyFourBits,
591   BIC_shift           = BIC_w,
592   ORR_w               = LogicalShiftedFixed | ORR,
593   ORR_x               = LogicalShiftedFixed | ORR | SixtyFourBits,
594   ORR_shift           = ORR_w,
595   ORN_w               = LogicalShiftedFixed | ORN,
596   ORN_x               = LogicalShiftedFixed | ORN | SixtyFourBits,
597   ORN_shift           = ORN_w,
598   EOR_w               = LogicalShiftedFixed | EOR,
599   EOR_x               = LogicalShiftedFixed | EOR | SixtyFourBits,
600   EOR_shift           = EOR_w,
601   EON_w               = LogicalShiftedFixed | EON,
602   EON_x               = LogicalShiftedFixed | EON | SixtyFourBits,
603   EON_shift           = EON_w,
604   ANDS_w              = LogicalShiftedFixed | ANDS,
605   ANDS_x              = LogicalShiftedFixed | ANDS | SixtyFourBits,
606   ANDS_shift          = ANDS_w,
607   BICS_w              = LogicalShiftedFixed | BICS,
608   BICS_x              = LogicalShiftedFixed | BICS | SixtyFourBits,
609   BICS_shift          = BICS_w
610 };
611 
612 // Move wide immediate.
613 enum MoveWideImmediateOp {
614   MoveWideImmediateFixed = 0x12800000,
615   MoveWideImmediateFMask = 0x1F800000,
616   MoveWideImmediateMask  = 0xFF800000,
617   MOVN                   = 0x00000000,
618   MOVZ                   = 0x40000000,
619   MOVK                   = 0x60000000,
620   MOVN_w                 = MoveWideImmediateFixed | MOVN,
621   MOVN_x                 = MoveWideImmediateFixed | MOVN | SixtyFourBits,
622   MOVZ_w                 = MoveWideImmediateFixed | MOVZ,
623   MOVZ_x                 = MoveWideImmediateFixed | MOVZ | SixtyFourBits,
624   MOVK_w                 = MoveWideImmediateFixed | MOVK,
625   MOVK_x                 = MoveWideImmediateFixed | MOVK | SixtyFourBits
626 };
627 
628 // Bitfield.
629 const int kBitfieldNOffset = 22;
630 enum BitfieldOp {
631   BitfieldFixed = 0x13000000,
632   BitfieldFMask = 0x1F800000,
633   BitfieldMask  = 0xFF800000,
634   SBFM_w        = BitfieldFixed | 0x00000000,
635   SBFM_x        = BitfieldFixed | 0x80000000,
636   SBFM          = SBFM_w,
637   BFM_w         = BitfieldFixed | 0x20000000,
638   BFM_x         = BitfieldFixed | 0xA0000000,
639   BFM           = BFM_w,
640   UBFM_w        = BitfieldFixed | 0x40000000,
641   UBFM_x        = BitfieldFixed | 0xC0000000,
642   UBFM          = UBFM_w
643   // Bitfield N field.
644 };
645 
646 // Extract.
647 enum ExtractOp {
648   ExtractFixed = 0x13800000,
649   ExtractFMask = 0x1F800000,
650   ExtractMask  = 0xFFA00000,
651   EXTR_w       = ExtractFixed | 0x00000000,
652   EXTR_x       = ExtractFixed | 0x80000000,
653   EXTR         = EXTR_w
654 };
655 
656 // Unconditional branch.
657 enum UnconditionalBranchOp {
658   UnconditionalBranchFixed = 0x14000000,
659   UnconditionalBranchFMask = 0x7C000000,
660   UnconditionalBranchMask  = 0xFC000000,
661   B                        = UnconditionalBranchFixed | 0x00000000,
662   BL                       = UnconditionalBranchFixed | 0x80000000
663 };
664 
665 // Unconditional branch to register.
666 enum UnconditionalBranchToRegisterOp {
667   UnconditionalBranchToRegisterFixed = 0xD6000000,
668   UnconditionalBranchToRegisterFMask = 0xFE000000,
669   UnconditionalBranchToRegisterMask  = 0xFFFFFC1F,
670   BR      = UnconditionalBranchToRegisterFixed | 0x001F0000,
671   BLR     = UnconditionalBranchToRegisterFixed | 0x003F0000,
672   RET     = UnconditionalBranchToRegisterFixed | 0x005F0000
673 };
674 
675 // Compare and branch.
676 enum CompareBranchOp {
677   CompareBranchFixed = 0x34000000,
678   CompareBranchFMask = 0x7E000000,
679   CompareBranchMask  = 0xFF000000,
680   CBZ_w              = CompareBranchFixed | 0x00000000,
681   CBZ_x              = CompareBranchFixed | 0x80000000,
682   CBZ                = CBZ_w,
683   CBNZ_w             = CompareBranchFixed | 0x01000000,
684   CBNZ_x             = CompareBranchFixed | 0x81000000,
685   CBNZ               = CBNZ_w
686 };
687 
688 // Test and branch.
689 enum TestBranchOp {
690   TestBranchFixed = 0x36000000,
691   TestBranchFMask = 0x7E000000,
692   TestBranchMask  = 0x7F000000,
693   TBZ             = TestBranchFixed | 0x00000000,
694   TBNZ            = TestBranchFixed | 0x01000000
695 };
696 
697 // Conditional branch.
698 enum ConditionalBranchOp {
699   ConditionalBranchFixed = 0x54000000,
700   ConditionalBranchFMask = 0xFE000000,
701   ConditionalBranchMask  = 0xFF000010,
702   B_cond                 = ConditionalBranchFixed | 0x00000000
703 };
704 
705 // System.
706 // System instruction encoding is complicated because some instructions use op
707 // and CR fields to encode parameters. To handle this cleanly, the system
708 // instructions are split into more than one enum.
709 
710 enum SystemOp {
711   SystemFixed = 0xD5000000,
712   SystemFMask = 0xFFC00000
713 };
714 
715 enum SystemSysRegOp {
716   SystemSysRegFixed = 0xD5100000,
717   SystemSysRegFMask = 0xFFD00000,
718   SystemSysRegMask  = 0xFFF00000,
719   MRS               = SystemSysRegFixed | 0x00200000,
720   MSR               = SystemSysRegFixed | 0x00000000
721 };
722 
723 enum SystemHintOp {
724   SystemHintFixed = 0xD503201F,
725   SystemHintFMask = 0xFFFFF01F,
726   SystemHintMask  = 0xFFFFF01F,
727   HINT            = SystemHintFixed | 0x00000000
728 };
729 
730 enum SystemSysOp {
731   SystemSysFixed  = 0xD5080000,
732   SystemSysFMask  = 0xFFF80000,
733   SystemSysMask   = 0xFFF80000,
734   SYS             = SystemSysFixed | 0x00000000
735 };
736 
737 // Exception.
738 enum ExceptionOp {
739   ExceptionFixed = 0xD4000000,
740   ExceptionFMask = 0xFF000000,
741   ExceptionMask  = 0xFFE0001F,
742   HLT            = ExceptionFixed | 0x00400000,
743   BRK            = ExceptionFixed | 0x00200000,
744   SVC            = ExceptionFixed | 0x00000001,
745   HVC            = ExceptionFixed | 0x00000002,
746   SMC            = ExceptionFixed | 0x00000003,
747   DCPS1          = ExceptionFixed | 0x00A00001,
748   DCPS2          = ExceptionFixed | 0x00A00002,
749   DCPS3          = ExceptionFixed | 0x00A00003
750 };
751 
752 enum MemBarrierOp {
753   MemBarrierFixed = 0xD503309F,
754   MemBarrierFMask = 0xFFFFF09F,
755   MemBarrierMask  = 0xFFFFF0FF,
756   DSB             = MemBarrierFixed | 0x00000000,
757   DMB             = MemBarrierFixed | 0x00000020,
758   ISB             = MemBarrierFixed | 0x00000040
759 };
760 
761 enum SystemExclusiveMonitorOp {
762   SystemExclusiveMonitorFixed = 0xD503305F,
763   SystemExclusiveMonitorFMask = 0xFFFFF0FF,
764   SystemExclusiveMonitorMask  = 0xFFFFF0FF,
765   CLREX                       = SystemExclusiveMonitorFixed
766 };
767 
768 // Any load or store.
769 enum LoadStoreAnyOp {
770   LoadStoreAnyFMask = 0x0a000000,
771   LoadStoreAnyFixed = 0x08000000
772 };
773 
774 // Any load pair or store pair.
775 enum LoadStorePairAnyOp {
776   LoadStorePairAnyFMask = 0x3a000000,
777   LoadStorePairAnyFixed = 0x28000000
778 };
779 
780 #define LOAD_STORE_PAIR_OP_LIST(V)  \
781   V(STP, w,   0x00000000),          \
782   V(LDP, w,   0x00400000),          \
783   V(LDPSW, x, 0x40400000),          \
784   V(STP, x,   0x80000000),          \
785   V(LDP, x,   0x80400000),          \
786   V(STP, s,   0x04000000),          \
787   V(LDP, s,   0x04400000),          \
788   V(STP, d,   0x44000000),          \
789   V(LDP, d,   0x44400000),          \
790   V(STP, q,   0x84000000),          \
791   V(LDP, q,   0x84400000)
792 
793 // Load/store pair (post, pre and offset.)
794 enum LoadStorePairOp {
795   LoadStorePairMask = 0xC4400000,
796   LoadStorePairLBit = 1 << 22,
797   #define LOAD_STORE_PAIR(A, B, C) \
798   A##_##B = C
799   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR)
800   #undef LOAD_STORE_PAIR
801 };
802 
803 enum LoadStorePairPostIndexOp {
804   LoadStorePairPostIndexFixed = 0x28800000,
805   LoadStorePairPostIndexFMask = 0x3B800000,
806   LoadStorePairPostIndexMask  = 0xFFC00000,
807   #define LOAD_STORE_PAIR_POST_INDEX(A, B, C)  \
808   A##_##B##_post = LoadStorePairPostIndexFixed | A##_##B
809   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_POST_INDEX)
810   #undef LOAD_STORE_PAIR_POST_INDEX
811 };
812 
813 enum LoadStorePairPreIndexOp {
814   LoadStorePairPreIndexFixed = 0x29800000,
815   LoadStorePairPreIndexFMask = 0x3B800000,
816   LoadStorePairPreIndexMask  = 0xFFC00000,
817   #define LOAD_STORE_PAIR_PRE_INDEX(A, B, C)  \
818   A##_##B##_pre = LoadStorePairPreIndexFixed | A##_##B
819   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_PRE_INDEX)
820   #undef LOAD_STORE_PAIR_PRE_INDEX
821 };
822 
823 enum LoadStorePairOffsetOp {
824   LoadStorePairOffsetFixed = 0x29000000,
825   LoadStorePairOffsetFMask = 0x3B800000,
826   LoadStorePairOffsetMask  = 0xFFC00000,
827   #define LOAD_STORE_PAIR_OFFSET(A, B, C)  \
828   A##_##B##_off = LoadStorePairOffsetFixed | A##_##B
829   LOAD_STORE_PAIR_OP_LIST(LOAD_STORE_PAIR_OFFSET)
830   #undef LOAD_STORE_PAIR_OFFSET
831 };
832 
833 enum LoadStorePairNonTemporalOp {
834   LoadStorePairNonTemporalFixed = 0x28000000,
835   LoadStorePairNonTemporalFMask = 0x3B800000,
836   LoadStorePairNonTemporalMask  = 0xFFC00000,
837   LoadStorePairNonTemporalLBit = 1 << 22,
838   STNP_w = LoadStorePairNonTemporalFixed | STP_w,
839   LDNP_w = LoadStorePairNonTemporalFixed | LDP_w,
840   STNP_x = LoadStorePairNonTemporalFixed | STP_x,
841   LDNP_x = LoadStorePairNonTemporalFixed | LDP_x,
842   STNP_s = LoadStorePairNonTemporalFixed | STP_s,
843   LDNP_s = LoadStorePairNonTemporalFixed | LDP_s,
844   STNP_d = LoadStorePairNonTemporalFixed | STP_d,
845   LDNP_d = LoadStorePairNonTemporalFixed | LDP_d,
846   STNP_q = LoadStorePairNonTemporalFixed | STP_q,
847   LDNP_q = LoadStorePairNonTemporalFixed | LDP_q
848 };
849 
850 // Load literal.
851 enum LoadLiteralOp {
852   LoadLiteralFixed = 0x18000000,
853   LoadLiteralFMask = 0x3B000000,
854   LoadLiteralMask  = 0xFF000000,
855   LDR_w_lit        = LoadLiteralFixed | 0x00000000,
856   LDR_x_lit        = LoadLiteralFixed | 0x40000000,
857   LDRSW_x_lit      = LoadLiteralFixed | 0x80000000,
858   PRFM_lit         = LoadLiteralFixed | 0xC0000000,
859   LDR_s_lit        = LoadLiteralFixed | 0x04000000,
860   LDR_d_lit        = LoadLiteralFixed | 0x44000000,
861   LDR_q_lit        = LoadLiteralFixed | 0x84000000
862 };
863 
864 #define LOAD_STORE_OP_LIST(V)     \
865   V(ST, RB, w,  0x00000000),  \
866   V(ST, RH, w,  0x40000000),  \
867   V(ST, R, w,   0x80000000),  \
868   V(ST, R, x,   0xC0000000),  \
869   V(LD, RB, w,  0x00400000),  \
870   V(LD, RH, w,  0x40400000),  \
871   V(LD, R, w,   0x80400000),  \
872   V(LD, R, x,   0xC0400000),  \
873   V(LD, RSB, x, 0x00800000),  \
874   V(LD, RSH, x, 0x40800000),  \
875   V(LD, RSW, x, 0x80800000),  \
876   V(LD, RSB, w, 0x00C00000),  \
877   V(LD, RSH, w, 0x40C00000),  \
878   V(ST, R, b,   0x04000000),  \
879   V(ST, R, h,   0x44000000),  \
880   V(ST, R, s,   0x84000000),  \
881   V(ST, R, d,   0xC4000000),  \
882   V(ST, R, q,   0x04800000),  \
883   V(LD, R, b,   0x04400000),  \
884   V(LD, R, h,   0x44400000),  \
885   V(LD, R, s,   0x84400000),  \
886   V(LD, R, d,   0xC4400000),  \
887   V(LD, R, q,   0x04C00000)
888 
889 // Load/store (post, pre, offset and unsigned.)
890 enum LoadStoreOp {
891   LoadStoreMask = 0xC4C00000,
892   LoadStoreVMask = 0x04000000,
893   #define LOAD_STORE(A, B, C, D)  \
894   A##B##_##C = D
895   LOAD_STORE_OP_LIST(LOAD_STORE),
896   #undef LOAD_STORE
897   PRFM = 0xC0800000
898 };
899 
900 // Load/store unscaled offset.
901 enum LoadStoreUnscaledOffsetOp {
902   LoadStoreUnscaledOffsetFixed = 0x38000000,
903   LoadStoreUnscaledOffsetFMask = 0x3B200C00,
904   LoadStoreUnscaledOffsetMask  = 0xFFE00C00,
905   PRFUM                        = LoadStoreUnscaledOffsetFixed | PRFM,
906   #define LOAD_STORE_UNSCALED(A, B, C, D)  \
907   A##U##B##_##C = LoadStoreUnscaledOffsetFixed | D
908   LOAD_STORE_OP_LIST(LOAD_STORE_UNSCALED)
909   #undef LOAD_STORE_UNSCALED
910 };
911 
912 // Load/store post index.
913 enum LoadStorePostIndex {
914   LoadStorePostIndexFixed = 0x38000400,
915   LoadStorePostIndexFMask = 0x3B200C00,
916   LoadStorePostIndexMask  = 0xFFE00C00,
917   #define LOAD_STORE_POST_INDEX(A, B, C, D)  \
918   A##B##_##C##_post = LoadStorePostIndexFixed | D
919   LOAD_STORE_OP_LIST(LOAD_STORE_POST_INDEX)
920   #undef LOAD_STORE_POST_INDEX
921 };
922 
923 // Load/store pre index.
924 enum LoadStorePreIndex {
925   LoadStorePreIndexFixed = 0x38000C00,
926   LoadStorePreIndexFMask = 0x3B200C00,
927   LoadStorePreIndexMask  = 0xFFE00C00,
928   #define LOAD_STORE_PRE_INDEX(A, B, C, D)  \
929   A##B##_##C##_pre = LoadStorePreIndexFixed | D
930   LOAD_STORE_OP_LIST(LOAD_STORE_PRE_INDEX)
931   #undef LOAD_STORE_PRE_INDEX
932 };
933 
934 // Load/store unsigned offset.
935 enum LoadStoreUnsignedOffset {
936   LoadStoreUnsignedOffsetFixed = 0x39000000,
937   LoadStoreUnsignedOffsetFMask = 0x3B000000,
938   LoadStoreUnsignedOffsetMask  = 0xFFC00000,
939   PRFM_unsigned                = LoadStoreUnsignedOffsetFixed | PRFM,
940   #define LOAD_STORE_UNSIGNED_OFFSET(A, B, C, D) \
941   A##B##_##C##_unsigned = LoadStoreUnsignedOffsetFixed | D
942   LOAD_STORE_OP_LIST(LOAD_STORE_UNSIGNED_OFFSET)
943   #undef LOAD_STORE_UNSIGNED_OFFSET
944 };
945 
946 // Load/store register offset.
947 enum LoadStoreRegisterOffset {
948   LoadStoreRegisterOffsetFixed = 0x38200800,
949   LoadStoreRegisterOffsetFMask = 0x3B200C00,
950   LoadStoreRegisterOffsetMask  = 0xFFE00C00,
951   PRFM_reg                     = LoadStoreRegisterOffsetFixed | PRFM,
952   #define LOAD_STORE_REGISTER_OFFSET(A, B, C, D) \
953   A##B##_##C##_reg = LoadStoreRegisterOffsetFixed | D
954   LOAD_STORE_OP_LIST(LOAD_STORE_REGISTER_OFFSET)
955   #undef LOAD_STORE_REGISTER_OFFSET
956 };
957 
958 enum LoadStoreExclusive {
959   LoadStoreExclusiveFixed = 0x08000000,
960   LoadStoreExclusiveFMask = 0x3F000000,
961   LoadStoreExclusiveMask  = 0xFFE08000,
962   STXRB_w  = LoadStoreExclusiveFixed | 0x00000000,
963   STXRH_w  = LoadStoreExclusiveFixed | 0x40000000,
964   STXR_w   = LoadStoreExclusiveFixed | 0x80000000,
965   STXR_x   = LoadStoreExclusiveFixed | 0xC0000000,
966   LDXRB_w  = LoadStoreExclusiveFixed | 0x00400000,
967   LDXRH_w  = LoadStoreExclusiveFixed | 0x40400000,
968   LDXR_w   = LoadStoreExclusiveFixed | 0x80400000,
969   LDXR_x   = LoadStoreExclusiveFixed | 0xC0400000,
970   STXP_w   = LoadStoreExclusiveFixed | 0x80200000,
971   STXP_x   = LoadStoreExclusiveFixed | 0xC0200000,
972   LDXP_w   = LoadStoreExclusiveFixed | 0x80600000,
973   LDXP_x   = LoadStoreExclusiveFixed | 0xC0600000,
974   STLXRB_w = LoadStoreExclusiveFixed | 0x00008000,
975   STLXRH_w = LoadStoreExclusiveFixed | 0x40008000,
976   STLXR_w  = LoadStoreExclusiveFixed | 0x80008000,
977   STLXR_x  = LoadStoreExclusiveFixed | 0xC0008000,
978   LDAXRB_w = LoadStoreExclusiveFixed | 0x00408000,
979   LDAXRH_w = LoadStoreExclusiveFixed | 0x40408000,
980   LDAXR_w  = LoadStoreExclusiveFixed | 0x80408000,
981   LDAXR_x  = LoadStoreExclusiveFixed | 0xC0408000,
982   STLXP_w  = LoadStoreExclusiveFixed | 0x80208000,
983   STLXP_x  = LoadStoreExclusiveFixed | 0xC0208000,
984   LDAXP_w  = LoadStoreExclusiveFixed | 0x80608000,
985   LDAXP_x  = LoadStoreExclusiveFixed | 0xC0608000,
986   STLRB_w  = LoadStoreExclusiveFixed | 0x00808000,
987   STLRH_w  = LoadStoreExclusiveFixed | 0x40808000,
988   STLR_w   = LoadStoreExclusiveFixed | 0x80808000,
989   STLR_x   = LoadStoreExclusiveFixed | 0xC0808000,
990   LDARB_w  = LoadStoreExclusiveFixed | 0x00C08000,
991   LDARH_w  = LoadStoreExclusiveFixed | 0x40C08000,
992   LDAR_w   = LoadStoreExclusiveFixed | 0x80C08000,
993   LDAR_x   = LoadStoreExclusiveFixed | 0xC0C08000
994 };
995 
996 // Conditional compare.
997 enum ConditionalCompareOp {
998   ConditionalCompareMask = 0x60000000,
999   CCMN                   = 0x20000000,
1000   CCMP                   = 0x60000000
1001 };
1002 
1003 // Conditional compare register.
1004 enum ConditionalCompareRegisterOp {
1005   ConditionalCompareRegisterFixed = 0x1A400000,
1006   ConditionalCompareRegisterFMask = 0x1FE00800,
1007   ConditionalCompareRegisterMask  = 0xFFE00C10,
1008   CCMN_w = ConditionalCompareRegisterFixed | CCMN,
1009   CCMN_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMN,
1010   CCMP_w = ConditionalCompareRegisterFixed | CCMP,
1011   CCMP_x = ConditionalCompareRegisterFixed | SixtyFourBits | CCMP
1012 };
1013 
1014 // Conditional compare immediate.
1015 enum ConditionalCompareImmediateOp {
1016   ConditionalCompareImmediateFixed = 0x1A400800,
1017   ConditionalCompareImmediateFMask = 0x1FE00800,
1018   ConditionalCompareImmediateMask  = 0xFFE00C10,
1019   CCMN_w_imm = ConditionalCompareImmediateFixed | CCMN,
1020   CCMN_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMN,
1021   CCMP_w_imm = ConditionalCompareImmediateFixed | CCMP,
1022   CCMP_x_imm = ConditionalCompareImmediateFixed | SixtyFourBits | CCMP
1023 };
1024 
1025 // Conditional select.
1026 enum ConditionalSelectOp {
1027   ConditionalSelectFixed = 0x1A800000,
1028   ConditionalSelectFMask = 0x1FE00000,
1029   ConditionalSelectMask  = 0xFFE00C00,
1030   CSEL_w                 = ConditionalSelectFixed | 0x00000000,
1031   CSEL_x                 = ConditionalSelectFixed | 0x80000000,
1032   CSEL                   = CSEL_w,
1033   CSINC_w                = ConditionalSelectFixed | 0x00000400,
1034   CSINC_x                = ConditionalSelectFixed | 0x80000400,
1035   CSINC                  = CSINC_w,
1036   CSINV_w                = ConditionalSelectFixed | 0x40000000,
1037   CSINV_x                = ConditionalSelectFixed | 0xC0000000,
1038   CSINV                  = CSINV_w,
1039   CSNEG_w                = ConditionalSelectFixed | 0x40000400,
1040   CSNEG_x                = ConditionalSelectFixed | 0xC0000400,
1041   CSNEG                  = CSNEG_w
1042 };
1043 
1044 // Data processing 1 source.
1045 enum DataProcessing1SourceOp {
1046   DataProcessing1SourceFixed = 0x5AC00000,
1047   DataProcessing1SourceFMask = 0x5FE00000,
1048   DataProcessing1SourceMask  = 0xFFFFFC00,
1049   RBIT    = DataProcessing1SourceFixed | 0x00000000,
1050   RBIT_w  = RBIT,
1051   RBIT_x  = RBIT | SixtyFourBits,
1052   REV16   = DataProcessing1SourceFixed | 0x00000400,
1053   REV16_w = REV16,
1054   REV16_x = REV16 | SixtyFourBits,
1055   REV     = DataProcessing1SourceFixed | 0x00000800,
1056   REV_w   = REV,
1057   REV32_x = REV | SixtyFourBits,
1058   REV_x   = DataProcessing1SourceFixed | SixtyFourBits | 0x00000C00,
1059   CLZ     = DataProcessing1SourceFixed | 0x00001000,
1060   CLZ_w   = CLZ,
1061   CLZ_x   = CLZ | SixtyFourBits,
1062   CLS     = DataProcessing1SourceFixed | 0x00001400,
1063   CLS_w   = CLS,
1064   CLS_x   = CLS | SixtyFourBits
1065 };
1066 
1067 // Data processing 2 source.
1068 enum DataProcessing2SourceOp {
1069   DataProcessing2SourceFixed = 0x1AC00000,
1070   DataProcessing2SourceFMask = 0x5FE00000,
1071   DataProcessing2SourceMask  = 0xFFE0FC00,
1072   UDIV_w  = DataProcessing2SourceFixed | 0x00000800,
1073   UDIV_x  = DataProcessing2SourceFixed | 0x80000800,
1074   UDIV    = UDIV_w,
1075   SDIV_w  = DataProcessing2SourceFixed | 0x00000C00,
1076   SDIV_x  = DataProcessing2SourceFixed | 0x80000C00,
1077   SDIV    = SDIV_w,
1078   LSLV_w  = DataProcessing2SourceFixed | 0x00002000,
1079   LSLV_x  = DataProcessing2SourceFixed | 0x80002000,
1080   LSLV    = LSLV_w,
1081   LSRV_w  = DataProcessing2SourceFixed | 0x00002400,
1082   LSRV_x  = DataProcessing2SourceFixed | 0x80002400,
1083   LSRV    = LSRV_w,
1084   ASRV_w  = DataProcessing2SourceFixed | 0x00002800,
1085   ASRV_x  = DataProcessing2SourceFixed | 0x80002800,
1086   ASRV    = ASRV_w,
1087   RORV_w  = DataProcessing2SourceFixed | 0x00002C00,
1088   RORV_x  = DataProcessing2SourceFixed | 0x80002C00,
1089   RORV    = RORV_w,
1090   CRC32B  = DataProcessing2SourceFixed | 0x00004000,
1091   CRC32H  = DataProcessing2SourceFixed | 0x00004400,
1092   CRC32W  = DataProcessing2SourceFixed | 0x00004800,
1093   CRC32X  = DataProcessing2SourceFixed | SixtyFourBits | 0x00004C00,
1094   CRC32CB = DataProcessing2SourceFixed | 0x00005000,
1095   CRC32CH = DataProcessing2SourceFixed | 0x00005400,
1096   CRC32CW = DataProcessing2SourceFixed | 0x00005800,
1097   CRC32CX = DataProcessing2SourceFixed | SixtyFourBits | 0x00005C00
1098 };
1099 
1100 // Data processing 3 source.
1101 enum DataProcessing3SourceOp {
1102   DataProcessing3SourceFixed = 0x1B000000,
1103   DataProcessing3SourceFMask = 0x1F000000,
1104   DataProcessing3SourceMask  = 0xFFE08000,
1105   MADD_w                     = DataProcessing3SourceFixed | 0x00000000,
1106   MADD_x                     = DataProcessing3SourceFixed | 0x80000000,
1107   MADD                       = MADD_w,
1108   MSUB_w                     = DataProcessing3SourceFixed | 0x00008000,
1109   MSUB_x                     = DataProcessing3SourceFixed | 0x80008000,
1110   MSUB                       = MSUB_w,
1111   SMADDL_x                   = DataProcessing3SourceFixed | 0x80200000,
1112   SMSUBL_x                   = DataProcessing3SourceFixed | 0x80208000,
1113   SMULH_x                    = DataProcessing3SourceFixed | 0x80400000,
1114   UMADDL_x                   = DataProcessing3SourceFixed | 0x80A00000,
1115   UMSUBL_x                   = DataProcessing3SourceFixed | 0x80A08000,
1116   UMULH_x                    = DataProcessing3SourceFixed | 0x80C00000
1117 };
1118 
1119 // Floating point compare.
1120 enum FPCompareOp {
1121   FPCompareFixed = 0x1E202000,
1122   FPCompareFMask = 0x5F203C00,
1123   FPCompareMask  = 0xFFE0FC1F,
1124   FCMP_s         = FPCompareFixed | 0x00000000,
1125   FCMP_d         = FPCompareFixed | FP64 | 0x00000000,
1126   FCMP           = FCMP_s,
1127   FCMP_s_zero    = FPCompareFixed | 0x00000008,
1128   FCMP_d_zero    = FPCompareFixed | FP64 | 0x00000008,
1129   FCMP_zero      = FCMP_s_zero,
1130   FCMPE_s        = FPCompareFixed | 0x00000010,
1131   FCMPE_d        = FPCompareFixed | FP64 | 0x00000010,
1132   FCMPE          = FCMPE_s,
1133   FCMPE_s_zero   = FPCompareFixed | 0x00000018,
1134   FCMPE_d_zero   = FPCompareFixed | FP64 | 0x00000018,
1135   FCMPE_zero     = FCMPE_s_zero
1136 };
1137 
1138 // Floating point conditional compare.
1139 enum FPConditionalCompareOp {
1140   FPConditionalCompareFixed = 0x1E200400,
1141   FPConditionalCompareFMask = 0x5F200C00,
1142   FPConditionalCompareMask  = 0xFFE00C10,
1143   FCCMP_s                   = FPConditionalCompareFixed | 0x00000000,
1144   FCCMP_d                   = FPConditionalCompareFixed | FP64 | 0x00000000,
1145   FCCMP                     = FCCMP_s,
1146   FCCMPE_s                  = FPConditionalCompareFixed | 0x00000010,
1147   FCCMPE_d                  = FPConditionalCompareFixed | FP64 | 0x00000010,
1148   FCCMPE                    = FCCMPE_s
1149 };
1150 
1151 // Floating point conditional select.
1152 enum FPConditionalSelectOp {
1153   FPConditionalSelectFixed = 0x1E200C00,
1154   FPConditionalSelectFMask = 0x5F200C00,
1155   FPConditionalSelectMask  = 0xFFE00C00,
1156   FCSEL_s                  = FPConditionalSelectFixed | 0x00000000,
1157   FCSEL_d                  = FPConditionalSelectFixed | FP64 | 0x00000000,
1158   FCSEL                    = FCSEL_s
1159 };
1160 
1161 // Floating point immediate.
1162 enum FPImmediateOp {
1163   FPImmediateFixed = 0x1E201000,
1164   FPImmediateFMask = 0x5F201C00,
1165   FPImmediateMask  = 0xFFE01C00,
1166   FMOV_s_imm       = FPImmediateFixed | 0x00000000,
1167   FMOV_d_imm       = FPImmediateFixed | FP64 | 0x00000000
1168 };
1169 
1170 // Floating point data processing 1 source.
1171 enum FPDataProcessing1SourceOp {
1172   FPDataProcessing1SourceFixed = 0x1E204000,
1173   FPDataProcessing1SourceFMask = 0x5F207C00,
1174   FPDataProcessing1SourceMask  = 0xFFFFFC00,
1175   FMOV_s   = FPDataProcessing1SourceFixed | 0x00000000,
1176   FMOV_d   = FPDataProcessing1SourceFixed | FP64 | 0x00000000,
1177   FMOV     = FMOV_s,
1178   FABS_s   = FPDataProcessing1SourceFixed | 0x00008000,
1179   FABS_d   = FPDataProcessing1SourceFixed | FP64 | 0x00008000,
1180   FABS     = FABS_s,
1181   FNEG_s   = FPDataProcessing1SourceFixed | 0x00010000,
1182   FNEG_d   = FPDataProcessing1SourceFixed | FP64 | 0x00010000,
1183   FNEG     = FNEG_s,
1184   FSQRT_s  = FPDataProcessing1SourceFixed | 0x00018000,
1185   FSQRT_d  = FPDataProcessing1SourceFixed | FP64 | 0x00018000,
1186   FSQRT    = FSQRT_s,
1187   FCVT_ds  = FPDataProcessing1SourceFixed | 0x00028000,
1188   FCVT_sd  = FPDataProcessing1SourceFixed | FP64 | 0x00020000,
1189   FCVT_hs  = FPDataProcessing1SourceFixed | 0x00038000,
1190   FCVT_hd  = FPDataProcessing1SourceFixed | FP64 | 0x00038000,
1191   FCVT_sh  = FPDataProcessing1SourceFixed | 0x00C20000,
1192   FCVT_dh  = FPDataProcessing1SourceFixed | 0x00C28000,
1193   FRINTN_s = FPDataProcessing1SourceFixed | 0x00040000,
1194   FRINTN_d = FPDataProcessing1SourceFixed | FP64 | 0x00040000,
1195   FRINTN   = FRINTN_s,
1196   FRINTP_s = FPDataProcessing1SourceFixed | 0x00048000,
1197   FRINTP_d = FPDataProcessing1SourceFixed | FP64 | 0x00048000,
1198   FRINTP   = FRINTP_s,
1199   FRINTM_s = FPDataProcessing1SourceFixed | 0x00050000,
1200   FRINTM_d = FPDataProcessing1SourceFixed | FP64 | 0x00050000,
1201   FRINTM   = FRINTM_s,
1202   FRINTZ_s = FPDataProcessing1SourceFixed | 0x00058000,
1203   FRINTZ_d = FPDataProcessing1SourceFixed | FP64 | 0x00058000,
1204   FRINTZ   = FRINTZ_s,
1205   FRINTA_s = FPDataProcessing1SourceFixed | 0x00060000,
1206   FRINTA_d = FPDataProcessing1SourceFixed | FP64 | 0x00060000,
1207   FRINTA   = FRINTA_s,
1208   FRINTX_s = FPDataProcessing1SourceFixed | 0x00070000,
1209   FRINTX_d = FPDataProcessing1SourceFixed | FP64 | 0x00070000,
1210   FRINTX   = FRINTX_s,
1211   FRINTI_s = FPDataProcessing1SourceFixed | 0x00078000,
1212   FRINTI_d = FPDataProcessing1SourceFixed | FP64 | 0x00078000,
1213   FRINTI   = FRINTI_s
1214 };
1215 
1216 // Floating point data processing 2 source.
1217 enum FPDataProcessing2SourceOp {
1218   FPDataProcessing2SourceFixed = 0x1E200800,
1219   FPDataProcessing2SourceFMask = 0x5F200C00,
1220   FPDataProcessing2SourceMask  = 0xFFE0FC00,
1221   FMUL     = FPDataProcessing2SourceFixed | 0x00000000,
1222   FMUL_s   = FMUL,
1223   FMUL_d   = FMUL | FP64,
1224   FDIV     = FPDataProcessing2SourceFixed | 0x00001000,
1225   FDIV_s   = FDIV,
1226   FDIV_d   = FDIV | FP64,
1227   FADD     = FPDataProcessing2SourceFixed | 0x00002000,
1228   FADD_s   = FADD,
1229   FADD_d   = FADD | FP64,
1230   FSUB     = FPDataProcessing2SourceFixed | 0x00003000,
1231   FSUB_s   = FSUB,
1232   FSUB_d   = FSUB | FP64,
1233   FMAX     = FPDataProcessing2SourceFixed | 0x00004000,
1234   FMAX_s   = FMAX,
1235   FMAX_d   = FMAX | FP64,
1236   FMIN     = FPDataProcessing2SourceFixed | 0x00005000,
1237   FMIN_s   = FMIN,
1238   FMIN_d   = FMIN | FP64,
1239   FMAXNM   = FPDataProcessing2SourceFixed | 0x00006000,
1240   FMAXNM_s = FMAXNM,
1241   FMAXNM_d = FMAXNM | FP64,
1242   FMINNM   = FPDataProcessing2SourceFixed | 0x00007000,
1243   FMINNM_s = FMINNM,
1244   FMINNM_d = FMINNM | FP64,
1245   FNMUL    = FPDataProcessing2SourceFixed | 0x00008000,
1246   FNMUL_s  = FNMUL,
1247   FNMUL_d  = FNMUL | FP64
1248 };
1249 
1250 // Floating point data processing 3 source.
1251 enum FPDataProcessing3SourceOp {
1252   FPDataProcessing3SourceFixed = 0x1F000000,
1253   FPDataProcessing3SourceFMask = 0x5F000000,
1254   FPDataProcessing3SourceMask  = 0xFFE08000,
1255   FMADD_s                      = FPDataProcessing3SourceFixed | 0x00000000,
1256   FMSUB_s                      = FPDataProcessing3SourceFixed | 0x00008000,
1257   FNMADD_s                     = FPDataProcessing3SourceFixed | 0x00200000,
1258   FNMSUB_s                     = FPDataProcessing3SourceFixed | 0x00208000,
1259   FMADD_d                      = FPDataProcessing3SourceFixed | 0x00400000,
1260   FMSUB_d                      = FPDataProcessing3SourceFixed | 0x00408000,
1261   FNMADD_d                     = FPDataProcessing3SourceFixed | 0x00600000,
1262   FNMSUB_d                     = FPDataProcessing3SourceFixed | 0x00608000
1263 };
1264 
1265 // Conversion between floating point and integer.
1266 enum FPIntegerConvertOp {
1267   FPIntegerConvertFixed = 0x1E200000,
1268   FPIntegerConvertFMask = 0x5F20FC00,
1269   FPIntegerConvertMask  = 0xFFFFFC00,
1270   FCVTNS    = FPIntegerConvertFixed | 0x00000000,
1271   FCVTNS_ws = FCVTNS,
1272   FCVTNS_xs = FCVTNS | SixtyFourBits,
1273   FCVTNS_wd = FCVTNS | FP64,
1274   FCVTNS_xd = FCVTNS | SixtyFourBits | FP64,
1275   FCVTNU    = FPIntegerConvertFixed | 0x00010000,
1276   FCVTNU_ws = FCVTNU,
1277   FCVTNU_xs = FCVTNU | SixtyFourBits,
1278   FCVTNU_wd = FCVTNU | FP64,
1279   FCVTNU_xd = FCVTNU | SixtyFourBits | FP64,
1280   FCVTPS    = FPIntegerConvertFixed | 0x00080000,
1281   FCVTPS_ws = FCVTPS,
1282   FCVTPS_xs = FCVTPS | SixtyFourBits,
1283   FCVTPS_wd = FCVTPS | FP64,
1284   FCVTPS_xd = FCVTPS | SixtyFourBits | FP64,
1285   FCVTPU    = FPIntegerConvertFixed | 0x00090000,
1286   FCVTPU_ws = FCVTPU,
1287   FCVTPU_xs = FCVTPU | SixtyFourBits,
1288   FCVTPU_wd = FCVTPU | FP64,
1289   FCVTPU_xd = FCVTPU | SixtyFourBits | FP64,
1290   FCVTMS    = FPIntegerConvertFixed | 0x00100000,
1291   FCVTMS_ws = FCVTMS,
1292   FCVTMS_xs = FCVTMS | SixtyFourBits,
1293   FCVTMS_wd = FCVTMS | FP64,
1294   FCVTMS_xd = FCVTMS | SixtyFourBits | FP64,
1295   FCVTMU    = FPIntegerConvertFixed | 0x00110000,
1296   FCVTMU_ws = FCVTMU,
1297   FCVTMU_xs = FCVTMU | SixtyFourBits,
1298   FCVTMU_wd = FCVTMU | FP64,
1299   FCVTMU_xd = FCVTMU | SixtyFourBits | FP64,
1300   FCVTZS    = FPIntegerConvertFixed | 0x00180000,
1301   FCVTZS_ws = FCVTZS,
1302   FCVTZS_xs = FCVTZS | SixtyFourBits,
1303   FCVTZS_wd = FCVTZS | FP64,
1304   FCVTZS_xd = FCVTZS | SixtyFourBits | FP64,
1305   FCVTZU    = FPIntegerConvertFixed | 0x00190000,
1306   FCVTZU_ws = FCVTZU,
1307   FCVTZU_xs = FCVTZU | SixtyFourBits,
1308   FCVTZU_wd = FCVTZU | FP64,
1309   FCVTZU_xd = FCVTZU | SixtyFourBits | FP64,
1310   SCVTF     = FPIntegerConvertFixed | 0x00020000,
1311   SCVTF_sw  = SCVTF,
1312   SCVTF_sx  = SCVTF | SixtyFourBits,
1313   SCVTF_dw  = SCVTF | FP64,
1314   SCVTF_dx  = SCVTF | SixtyFourBits | FP64,
1315   UCVTF     = FPIntegerConvertFixed | 0x00030000,
1316   UCVTF_sw  = UCVTF,
1317   UCVTF_sx  = UCVTF | SixtyFourBits,
1318   UCVTF_dw  = UCVTF | FP64,
1319   UCVTF_dx  = UCVTF | SixtyFourBits | FP64,
1320   FCVTAS    = FPIntegerConvertFixed | 0x00040000,
1321   FCVTAS_ws = FCVTAS,
1322   FCVTAS_xs = FCVTAS | SixtyFourBits,
1323   FCVTAS_wd = FCVTAS | FP64,
1324   FCVTAS_xd = FCVTAS | SixtyFourBits | FP64,
1325   FCVTAU    = FPIntegerConvertFixed | 0x00050000,
1326   FCVTAU_ws = FCVTAU,
1327   FCVTAU_xs = FCVTAU | SixtyFourBits,
1328   FCVTAU_wd = FCVTAU | FP64,
1329   FCVTAU_xd = FCVTAU | SixtyFourBits | FP64,
1330   FMOV_ws   = FPIntegerConvertFixed | 0x00060000,
1331   FMOV_sw   = FPIntegerConvertFixed | 0x00070000,
1332   FMOV_xd   = FMOV_ws | SixtyFourBits | FP64,
1333   FMOV_dx   = FMOV_sw | SixtyFourBits | FP64,
1334   FMOV_d1_x = FPIntegerConvertFixed | SixtyFourBits | 0x008F0000,
1335   FMOV_x_d1 = FPIntegerConvertFixed | SixtyFourBits | 0x008E0000
1336 };
1337 
1338 // Conversion between fixed point and floating point.
1339 enum FPFixedPointConvertOp {
1340   FPFixedPointConvertFixed = 0x1E000000,
1341   FPFixedPointConvertFMask = 0x5F200000,
1342   FPFixedPointConvertMask  = 0xFFFF0000,
1343   FCVTZS_fixed    = FPFixedPointConvertFixed | 0x00180000,
1344   FCVTZS_ws_fixed = FCVTZS_fixed,
1345   FCVTZS_xs_fixed = FCVTZS_fixed | SixtyFourBits,
1346   FCVTZS_wd_fixed = FCVTZS_fixed | FP64,
1347   FCVTZS_xd_fixed = FCVTZS_fixed | SixtyFourBits | FP64,
1348   FCVTZU_fixed    = FPFixedPointConvertFixed | 0x00190000,
1349   FCVTZU_ws_fixed = FCVTZU_fixed,
1350   FCVTZU_xs_fixed = FCVTZU_fixed | SixtyFourBits,
1351   FCVTZU_wd_fixed = FCVTZU_fixed | FP64,
1352   FCVTZU_xd_fixed = FCVTZU_fixed | SixtyFourBits | FP64,
1353   SCVTF_fixed     = FPFixedPointConvertFixed | 0x00020000,
1354   SCVTF_sw_fixed  = SCVTF_fixed,
1355   SCVTF_sx_fixed  = SCVTF_fixed | SixtyFourBits,
1356   SCVTF_dw_fixed  = SCVTF_fixed | FP64,
1357   SCVTF_dx_fixed  = SCVTF_fixed | SixtyFourBits | FP64,
1358   UCVTF_fixed     = FPFixedPointConvertFixed | 0x00030000,
1359   UCVTF_sw_fixed  = UCVTF_fixed,
1360   UCVTF_sx_fixed  = UCVTF_fixed | SixtyFourBits,
1361   UCVTF_dw_fixed  = UCVTF_fixed | FP64,
1362   UCVTF_dx_fixed  = UCVTF_fixed | SixtyFourBits | FP64
1363 };
1364 
1365 // Crypto - two register SHA.
1366 enum Crypto2RegSHAOp {
1367   Crypto2RegSHAFixed = 0x5E280800,
1368   Crypto2RegSHAFMask = 0xFF3E0C00
1369 };
1370 
1371 // Crypto - three register SHA.
1372 enum Crypto3RegSHAOp {
1373   Crypto3RegSHAFixed = 0x5E000000,
1374   Crypto3RegSHAFMask = 0xFF208C00
1375 };
1376 
1377 // Crypto - AES.
1378 enum CryptoAESOp {
1379   CryptoAESFixed = 0x4E280800,
1380   CryptoAESFMask = 0xFF3E0C00
1381 };
1382 
1383 // NEON instructions with two register operands.
1384 enum NEON2RegMiscOp {
1385   NEON2RegMiscFixed = 0x0E200800,
1386   NEON2RegMiscFMask = 0x9F3E0C00,
1387   NEON2RegMiscMask  = 0xBF3FFC00,
1388   NEON2RegMiscUBit  = 0x20000000,
1389   NEON_REV64     = NEON2RegMiscFixed | 0x00000000,
1390   NEON_REV32     = NEON2RegMiscFixed | 0x20000000,
1391   NEON_REV16     = NEON2RegMiscFixed | 0x00001000,
1392   NEON_SADDLP    = NEON2RegMiscFixed | 0x00002000,
1393   NEON_UADDLP    = NEON_SADDLP | NEON2RegMiscUBit,
1394   NEON_SUQADD    = NEON2RegMiscFixed | 0x00003000,
1395   NEON_USQADD    = NEON_SUQADD | NEON2RegMiscUBit,
1396   NEON_CLS       = NEON2RegMiscFixed | 0x00004000,
1397   NEON_CLZ       = NEON2RegMiscFixed | 0x20004000,
1398   NEON_CNT       = NEON2RegMiscFixed | 0x00005000,
1399   NEON_RBIT_NOT  = NEON2RegMiscFixed | 0x20005000,
1400   NEON_SADALP    = NEON2RegMiscFixed | 0x00006000,
1401   NEON_UADALP    = NEON_SADALP | NEON2RegMiscUBit,
1402   NEON_SQABS     = NEON2RegMiscFixed | 0x00007000,
1403   NEON_SQNEG     = NEON2RegMiscFixed | 0x20007000,
1404   NEON_CMGT_zero = NEON2RegMiscFixed | 0x00008000,
1405   NEON_CMGE_zero = NEON2RegMiscFixed | 0x20008000,
1406   NEON_CMEQ_zero = NEON2RegMiscFixed | 0x00009000,
1407   NEON_CMLE_zero = NEON2RegMiscFixed | 0x20009000,
1408   NEON_CMLT_zero = NEON2RegMiscFixed | 0x0000A000,
1409   NEON_ABS       = NEON2RegMiscFixed | 0x0000B000,
1410   NEON_NEG       = NEON2RegMiscFixed | 0x2000B000,
1411   NEON_XTN       = NEON2RegMiscFixed | 0x00012000,
1412   NEON_SQXTUN    = NEON2RegMiscFixed | 0x20012000,
1413   NEON_SHLL      = NEON2RegMiscFixed | 0x20013000,
1414   NEON_SQXTN     = NEON2RegMiscFixed | 0x00014000,
1415   NEON_UQXTN     = NEON_SQXTN | NEON2RegMiscUBit,
1416 
1417   NEON2RegMiscOpcode = 0x0001F000,
1418   NEON_RBIT_NOT_opcode = NEON_RBIT_NOT & NEON2RegMiscOpcode,
1419   NEON_NEG_opcode = NEON_NEG & NEON2RegMiscOpcode,
1420   NEON_XTN_opcode = NEON_XTN & NEON2RegMiscOpcode,
1421   NEON_UQXTN_opcode = NEON_UQXTN & NEON2RegMiscOpcode,
1422 
1423   // These instructions use only one bit of the size field. The other bit is
1424   // used to distinguish between instructions.
1425   NEON2RegMiscFPMask = NEON2RegMiscMask | 0x00800000,
1426   NEON_FABS   = NEON2RegMiscFixed | 0x0080F000,
1427   NEON_FNEG   = NEON2RegMiscFixed | 0x2080F000,
1428   NEON_FCVTN  = NEON2RegMiscFixed | 0x00016000,
1429   NEON_FCVTXN = NEON2RegMiscFixed | 0x20016000,
1430   NEON_FCVTL  = NEON2RegMiscFixed | 0x00017000,
1431   NEON_FRINTN = NEON2RegMiscFixed | 0x00018000,
1432   NEON_FRINTA = NEON2RegMiscFixed | 0x20018000,
1433   NEON_FRINTP = NEON2RegMiscFixed | 0x00818000,
1434   NEON_FRINTM = NEON2RegMiscFixed | 0x00019000,
1435   NEON_FRINTX = NEON2RegMiscFixed | 0x20019000,
1436   NEON_FRINTZ = NEON2RegMiscFixed | 0x00819000,
1437   NEON_FRINTI = NEON2RegMiscFixed | 0x20819000,
1438   NEON_FCVTNS = NEON2RegMiscFixed | 0x0001A000,
1439   NEON_FCVTNU = NEON_FCVTNS | NEON2RegMiscUBit,
1440   NEON_FCVTPS = NEON2RegMiscFixed | 0x0081A000,
1441   NEON_FCVTPU = NEON_FCVTPS | NEON2RegMiscUBit,
1442   NEON_FCVTMS = NEON2RegMiscFixed | 0x0001B000,
1443   NEON_FCVTMU = NEON_FCVTMS | NEON2RegMiscUBit,
1444   NEON_FCVTZS = NEON2RegMiscFixed | 0x0081B000,
1445   NEON_FCVTZU = NEON_FCVTZS | NEON2RegMiscUBit,
1446   NEON_FCVTAS = NEON2RegMiscFixed | 0x0001C000,
1447   NEON_FCVTAU = NEON_FCVTAS | NEON2RegMiscUBit,
1448   NEON_FSQRT  = NEON2RegMiscFixed | 0x2081F000,
1449   NEON_SCVTF  = NEON2RegMiscFixed | 0x0001D000,
1450   NEON_UCVTF  = NEON_SCVTF | NEON2RegMiscUBit,
1451   NEON_URSQRTE = NEON2RegMiscFixed | 0x2081C000,
1452   NEON_URECPE  = NEON2RegMiscFixed | 0x0081C000,
1453   NEON_FRSQRTE = NEON2RegMiscFixed | 0x2081D000,
1454   NEON_FRECPE  = NEON2RegMiscFixed | 0x0081D000,
1455   NEON_FCMGT_zero = NEON2RegMiscFixed | 0x0080C000,
1456   NEON_FCMGE_zero = NEON2RegMiscFixed | 0x2080C000,
1457   NEON_FCMEQ_zero = NEON2RegMiscFixed | 0x0080D000,
1458   NEON_FCMLE_zero = NEON2RegMiscFixed | 0x2080D000,
1459   NEON_FCMLT_zero = NEON2RegMiscFixed | 0x0080E000,
1460 
1461   NEON_FCVTL_opcode = NEON_FCVTL & NEON2RegMiscOpcode,
1462   NEON_FCVTN_opcode = NEON_FCVTN & NEON2RegMiscOpcode
1463 };
1464 
1465 // NEON instructions with three same-type operands.
1466 enum NEON3SameOp {
1467   NEON3SameFixed = 0x0E200400,
1468   NEON3SameFMask = 0x9F200400,
1469   NEON3SameMask = 0xBF20FC00,
1470   NEON3SameUBit = 0x20000000,
1471   NEON_ADD    = NEON3SameFixed | 0x00008000,
1472   NEON_ADDP   = NEON3SameFixed | 0x0000B800,
1473   NEON_SHADD  = NEON3SameFixed | 0x00000000,
1474   NEON_SHSUB  = NEON3SameFixed | 0x00002000,
1475   NEON_SRHADD = NEON3SameFixed | 0x00001000,
1476   NEON_CMEQ   = NEON3SameFixed | NEON3SameUBit | 0x00008800,
1477   NEON_CMGE   = NEON3SameFixed | 0x00003800,
1478   NEON_CMGT   = NEON3SameFixed | 0x00003000,
1479   NEON_CMHI   = NEON3SameFixed | NEON3SameUBit | NEON_CMGT,
1480   NEON_CMHS   = NEON3SameFixed | NEON3SameUBit | NEON_CMGE,
1481   NEON_CMTST  = NEON3SameFixed | 0x00008800,
1482   NEON_MLA    = NEON3SameFixed | 0x00009000,
1483   NEON_MLS    = NEON3SameFixed | 0x20009000,
1484   NEON_MUL    = NEON3SameFixed | 0x00009800,
1485   NEON_PMUL   = NEON3SameFixed | 0x20009800,
1486   NEON_SRSHL  = NEON3SameFixed | 0x00005000,
1487   NEON_SQSHL  = NEON3SameFixed | 0x00004800,
1488   NEON_SQRSHL = NEON3SameFixed | 0x00005800,
1489   NEON_SSHL   = NEON3SameFixed | 0x00004000,
1490   NEON_SMAX   = NEON3SameFixed | 0x00006000,
1491   NEON_SMAXP  = NEON3SameFixed | 0x0000A000,
1492   NEON_SMIN   = NEON3SameFixed | 0x00006800,
1493   NEON_SMINP  = NEON3SameFixed | 0x0000A800,
1494   NEON_SABD   = NEON3SameFixed | 0x00007000,
1495   NEON_SABA   = NEON3SameFixed | 0x00007800,
1496   NEON_UABD   = NEON3SameFixed | NEON3SameUBit | NEON_SABD,
1497   NEON_UABA   = NEON3SameFixed | NEON3SameUBit | NEON_SABA,
1498   NEON_SQADD  = NEON3SameFixed | 0x00000800,
1499   NEON_SQSUB  = NEON3SameFixed | 0x00002800,
1500   NEON_SUB    = NEON3SameFixed | NEON3SameUBit | 0x00008000,
1501   NEON_UHADD  = NEON3SameFixed | NEON3SameUBit | NEON_SHADD,
1502   NEON_UHSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SHSUB,
1503   NEON_URHADD = NEON3SameFixed | NEON3SameUBit | NEON_SRHADD,
1504   NEON_UMAX   = NEON3SameFixed | NEON3SameUBit | NEON_SMAX,
1505   NEON_UMAXP  = NEON3SameFixed | NEON3SameUBit | NEON_SMAXP,
1506   NEON_UMIN   = NEON3SameFixed | NEON3SameUBit | NEON_SMIN,
1507   NEON_UMINP  = NEON3SameFixed | NEON3SameUBit | NEON_SMINP,
1508   NEON_URSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SRSHL,
1509   NEON_UQADD  = NEON3SameFixed | NEON3SameUBit | NEON_SQADD,
1510   NEON_UQRSHL = NEON3SameFixed | NEON3SameUBit | NEON_SQRSHL,
1511   NEON_UQSHL  = NEON3SameFixed | NEON3SameUBit | NEON_SQSHL,
1512   NEON_UQSUB  = NEON3SameFixed | NEON3SameUBit | NEON_SQSUB,
1513   NEON_USHL   = NEON3SameFixed | NEON3SameUBit | NEON_SSHL,
1514   NEON_SQDMULH  = NEON3SameFixed | 0x0000B000,
1515   NEON_SQRDMULH = NEON3SameFixed | 0x2000B000,
1516 
1517   // NEON floating point instructions with three same-type operands.
1518   NEON3SameFPFixed = NEON3SameFixed | 0x0000C000,
1519   NEON3SameFPFMask = NEON3SameFMask | 0x0000C000,
1520   NEON3SameFPMask = NEON3SameMask | 0x00800000,
1521   NEON_FADD    = NEON3SameFixed | 0x0000D000,
1522   NEON_FSUB    = NEON3SameFixed | 0x0080D000,
1523   NEON_FMUL    = NEON3SameFixed | 0x2000D800,
1524   NEON_FDIV    = NEON3SameFixed | 0x2000F800,
1525   NEON_FMAX    = NEON3SameFixed | 0x0000F000,
1526   NEON_FMAXNM  = NEON3SameFixed | 0x0000C000,
1527   NEON_FMAXP   = NEON3SameFixed | 0x2000F000,
1528   NEON_FMAXNMP = NEON3SameFixed | 0x2000C000,
1529   NEON_FMIN    = NEON3SameFixed | 0x0080F000,
1530   NEON_FMINNM  = NEON3SameFixed | 0x0080C000,
1531   NEON_FMINP   = NEON3SameFixed | 0x2080F000,
1532   NEON_FMINNMP = NEON3SameFixed | 0x2080C000,
1533   NEON_FMLA    = NEON3SameFixed | 0x0000C800,
1534   NEON_FMLS    = NEON3SameFixed | 0x0080C800,
1535   NEON_FMULX   = NEON3SameFixed | 0x0000D800,
1536   NEON_FRECPS  = NEON3SameFixed | 0x0000F800,
1537   NEON_FRSQRTS = NEON3SameFixed | 0x0080F800,
1538   NEON_FABD    = NEON3SameFixed | 0x2080D000,
1539   NEON_FADDP   = NEON3SameFixed | 0x2000D000,
1540   NEON_FCMEQ   = NEON3SameFixed | 0x0000E000,
1541   NEON_FCMGE   = NEON3SameFixed | 0x2000E000,
1542   NEON_FCMGT   = NEON3SameFixed | 0x2080E000,
1543   NEON_FACGE   = NEON3SameFixed | 0x2000E800,
1544   NEON_FACGT   = NEON3SameFixed | 0x2080E800,
1545 
1546   // NEON logical instructions with three same-type operands.
1547   NEON3SameLogicalFixed = NEON3SameFixed | 0x00001800,
1548   NEON3SameLogicalFMask = NEON3SameFMask | 0x0000F800,
1549   NEON3SameLogicalMask = 0xBFE0FC00,
1550   NEON3SameLogicalFormatMask = NEON_Q,
1551   NEON_AND = NEON3SameLogicalFixed | 0x00000000,
1552   NEON_ORR = NEON3SameLogicalFixed | 0x00A00000,
1553   NEON_ORN = NEON3SameLogicalFixed | 0x00C00000,
1554   NEON_EOR = NEON3SameLogicalFixed | 0x20000000,
1555   NEON_BIC = NEON3SameLogicalFixed | 0x00400000,
1556   NEON_BIF = NEON3SameLogicalFixed | 0x20C00000,
1557   NEON_BIT = NEON3SameLogicalFixed | 0x20800000,
1558   NEON_BSL = NEON3SameLogicalFixed | 0x20400000
1559 };
1560 
1561 // NEON instructions with three different-type operands.
1562 enum NEON3DifferentOp {
1563   NEON3DifferentFixed = 0x0E200000,
1564   NEON3DifferentFMask = 0x9F200C00,
1565   NEON3DifferentMask  = 0xFF20FC00,
1566   NEON_ADDHN    = NEON3DifferentFixed | 0x00004000,
1567   NEON_ADDHN2   = NEON_ADDHN | NEON_Q,
1568   NEON_PMULL    = NEON3DifferentFixed | 0x0000E000,
1569   NEON_PMULL2   = NEON_PMULL | NEON_Q,
1570   NEON_RADDHN   = NEON3DifferentFixed | 0x20004000,
1571   NEON_RADDHN2  = NEON_RADDHN | NEON_Q,
1572   NEON_RSUBHN   = NEON3DifferentFixed | 0x20006000,
1573   NEON_RSUBHN2  = NEON_RSUBHN | NEON_Q,
1574   NEON_SABAL    = NEON3DifferentFixed | 0x00005000,
1575   NEON_SABAL2   = NEON_SABAL | NEON_Q,
1576   NEON_SABDL    = NEON3DifferentFixed | 0x00007000,
1577   NEON_SABDL2   = NEON_SABDL | NEON_Q,
1578   NEON_SADDL    = NEON3DifferentFixed | 0x00000000,
1579   NEON_SADDL2   = NEON_SADDL | NEON_Q,
1580   NEON_SADDW    = NEON3DifferentFixed | 0x00001000,
1581   NEON_SADDW2   = NEON_SADDW | NEON_Q,
1582   NEON_SMLAL    = NEON3DifferentFixed | 0x00008000,
1583   NEON_SMLAL2   = NEON_SMLAL | NEON_Q,
1584   NEON_SMLSL    = NEON3DifferentFixed | 0x0000A000,
1585   NEON_SMLSL2   = NEON_SMLSL | NEON_Q,
1586   NEON_SMULL    = NEON3DifferentFixed | 0x0000C000,
1587   NEON_SMULL2   = NEON_SMULL | NEON_Q,
1588   NEON_SSUBL    = NEON3DifferentFixed | 0x00002000,
1589   NEON_SSUBL2   = NEON_SSUBL | NEON_Q,
1590   NEON_SSUBW    = NEON3DifferentFixed | 0x00003000,
1591   NEON_SSUBW2   = NEON_SSUBW | NEON_Q,
1592   NEON_SQDMLAL  = NEON3DifferentFixed | 0x00009000,
1593   NEON_SQDMLAL2 = NEON_SQDMLAL | NEON_Q,
1594   NEON_SQDMLSL  = NEON3DifferentFixed | 0x0000B000,
1595   NEON_SQDMLSL2 = NEON_SQDMLSL | NEON_Q,
1596   NEON_SQDMULL  = NEON3DifferentFixed | 0x0000D000,
1597   NEON_SQDMULL2 = NEON_SQDMULL | NEON_Q,
1598   NEON_SUBHN    = NEON3DifferentFixed | 0x00006000,
1599   NEON_SUBHN2   = NEON_SUBHN | NEON_Q,
1600   NEON_UABAL    = NEON_SABAL | NEON3SameUBit,
1601   NEON_UABAL2   = NEON_UABAL | NEON_Q,
1602   NEON_UABDL    = NEON_SABDL | NEON3SameUBit,
1603   NEON_UABDL2   = NEON_UABDL | NEON_Q,
1604   NEON_UADDL    = NEON_SADDL | NEON3SameUBit,
1605   NEON_UADDL2   = NEON_UADDL | NEON_Q,
1606   NEON_UADDW    = NEON_SADDW | NEON3SameUBit,
1607   NEON_UADDW2   = NEON_UADDW | NEON_Q,
1608   NEON_UMLAL    = NEON_SMLAL | NEON3SameUBit,
1609   NEON_UMLAL2   = NEON_UMLAL | NEON_Q,
1610   NEON_UMLSL    = NEON_SMLSL | NEON3SameUBit,
1611   NEON_UMLSL2   = NEON_UMLSL | NEON_Q,
1612   NEON_UMULL    = NEON_SMULL | NEON3SameUBit,
1613   NEON_UMULL2   = NEON_UMULL | NEON_Q,
1614   NEON_USUBL    = NEON_SSUBL | NEON3SameUBit,
1615   NEON_USUBL2   = NEON_USUBL | NEON_Q,
1616   NEON_USUBW    = NEON_SSUBW | NEON3SameUBit,
1617   NEON_USUBW2   = NEON_USUBW | NEON_Q
1618 };
1619 
1620 // NEON instructions operating across vectors.
1621 enum NEONAcrossLanesOp {
1622   NEONAcrossLanesFixed = 0x0E300800,
1623   NEONAcrossLanesFMask = 0x9F3E0C00,
1624   NEONAcrossLanesMask  = 0xBF3FFC00,
1625   NEON_ADDV   = NEONAcrossLanesFixed | 0x0001B000,
1626   NEON_SADDLV = NEONAcrossLanesFixed | 0x00003000,
1627   NEON_UADDLV = NEONAcrossLanesFixed | 0x20003000,
1628   NEON_SMAXV  = NEONAcrossLanesFixed | 0x0000A000,
1629   NEON_SMINV  = NEONAcrossLanesFixed | 0x0001A000,
1630   NEON_UMAXV  = NEONAcrossLanesFixed | 0x2000A000,
1631   NEON_UMINV  = NEONAcrossLanesFixed | 0x2001A000,
1632 
1633   // NEON floating point across instructions.
1634   NEONAcrossLanesFPFixed = NEONAcrossLanesFixed | 0x0000C000,
1635   NEONAcrossLanesFPFMask = NEONAcrossLanesFMask | 0x0000C000,
1636   NEONAcrossLanesFPMask  = NEONAcrossLanesMask  | 0x00800000,
1637 
1638   NEON_FMAXV   = NEONAcrossLanesFPFixed | 0x2000F000,
1639   NEON_FMINV   = NEONAcrossLanesFPFixed | 0x2080F000,
1640   NEON_FMAXNMV = NEONAcrossLanesFPFixed | 0x2000C000,
1641   NEON_FMINNMV = NEONAcrossLanesFPFixed | 0x2080C000
1642 };
1643 
1644 // NEON instructions with indexed element operand.
1645 enum NEONByIndexedElementOp {
1646   NEONByIndexedElementFixed = 0x0F000000,
1647   NEONByIndexedElementFMask = 0x9F000400,
1648   NEONByIndexedElementMask  = 0xBF00F400,
1649   NEON_MUL_byelement   = NEONByIndexedElementFixed | 0x00008000,
1650   NEON_MLA_byelement   = NEONByIndexedElementFixed | 0x20000000,
1651   NEON_MLS_byelement   = NEONByIndexedElementFixed | 0x20004000,
1652   NEON_SMULL_byelement = NEONByIndexedElementFixed | 0x0000A000,
1653   NEON_SMLAL_byelement = NEONByIndexedElementFixed | 0x00002000,
1654   NEON_SMLSL_byelement = NEONByIndexedElementFixed | 0x00006000,
1655   NEON_UMULL_byelement = NEONByIndexedElementFixed | 0x2000A000,
1656   NEON_UMLAL_byelement = NEONByIndexedElementFixed | 0x20002000,
1657   NEON_UMLSL_byelement = NEONByIndexedElementFixed | 0x20006000,
1658   NEON_SQDMULL_byelement = NEONByIndexedElementFixed | 0x0000B000,
1659   NEON_SQDMLAL_byelement = NEONByIndexedElementFixed | 0x00003000,
1660   NEON_SQDMLSL_byelement = NEONByIndexedElementFixed | 0x00007000,
1661   NEON_SQDMULH_byelement  = NEONByIndexedElementFixed | 0x0000C000,
1662   NEON_SQRDMULH_byelement = NEONByIndexedElementFixed | 0x0000D000,
1663 
1664   // Floating point instructions.
1665   NEONByIndexedElementFPFixed = NEONByIndexedElementFixed | 0x00800000,
1666   NEONByIndexedElementFPMask = NEONByIndexedElementMask | 0x00800000,
1667   NEON_FMLA_byelement  = NEONByIndexedElementFPFixed | 0x00001000,
1668   NEON_FMLS_byelement  = NEONByIndexedElementFPFixed | 0x00005000,
1669   NEON_FMUL_byelement  = NEONByIndexedElementFPFixed | 0x00009000,
1670   NEON_FMULX_byelement = NEONByIndexedElementFPFixed | 0x20009000
1671 };
1672 
1673 // NEON register copy.
1674 enum NEONCopyOp {
1675   NEONCopyFixed = 0x0E000400,
1676   NEONCopyFMask = 0x9FE08400,
1677   NEONCopyMask  = 0x3FE08400,
1678   NEONCopyInsElementMask = NEONCopyMask | 0x40000000,
1679   NEONCopyInsGeneralMask = NEONCopyMask | 0x40007800,
1680   NEONCopyDupElementMask = NEONCopyMask | 0x20007800,
1681   NEONCopyDupGeneralMask = NEONCopyDupElementMask,
1682   NEONCopyUmovMask       = NEONCopyMask | 0x20007800,
1683   NEONCopySmovMask       = NEONCopyMask | 0x20007800,
1684   NEON_INS_ELEMENT       = NEONCopyFixed | 0x60000000,
1685   NEON_INS_GENERAL       = NEONCopyFixed | 0x40001800,
1686   NEON_DUP_ELEMENT       = NEONCopyFixed | 0x00000000,
1687   NEON_DUP_GENERAL       = NEONCopyFixed | 0x00000800,
1688   NEON_SMOV              = NEONCopyFixed | 0x00002800,
1689   NEON_UMOV              = NEONCopyFixed | 0x00003800
1690 };
1691 
1692 // NEON extract.
1693 enum NEONExtractOp {
1694   NEONExtractFixed = 0x2E000000,
1695   NEONExtractFMask = 0xBF208400,
1696   NEONExtractMask = 0xBFE08400,
1697   NEON_EXT = NEONExtractFixed | 0x00000000
1698 };
1699 
1700 enum NEONLoadStoreMultiOp {
1701   NEONLoadStoreMultiL    = 0x00400000,
1702   NEONLoadStoreMulti1_1v = 0x00007000,
1703   NEONLoadStoreMulti1_2v = 0x0000A000,
1704   NEONLoadStoreMulti1_3v = 0x00006000,
1705   NEONLoadStoreMulti1_4v = 0x00002000,
1706   NEONLoadStoreMulti2    = 0x00008000,
1707   NEONLoadStoreMulti3    = 0x00004000,
1708   NEONLoadStoreMulti4    = 0x00000000
1709 };
1710 
1711 // NEON load/store multiple structures.
1712 enum NEONLoadStoreMultiStructOp {
1713   NEONLoadStoreMultiStructFixed = 0x0C000000,
1714   NEONLoadStoreMultiStructFMask = 0xBFBF0000,
1715   NEONLoadStoreMultiStructMask  = 0xBFFFF000,
1716   NEONLoadStoreMultiStructStore = NEONLoadStoreMultiStructFixed,
1717   NEONLoadStoreMultiStructLoad  = NEONLoadStoreMultiStructFixed |
1718                                   NEONLoadStoreMultiL,
1719   NEON_LD1_1v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_1v,
1720   NEON_LD1_2v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_2v,
1721   NEON_LD1_3v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_3v,
1722   NEON_LD1_4v = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti1_4v,
1723   NEON_LD2    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti2,
1724   NEON_LD3    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti3,
1725   NEON_LD4    = NEONLoadStoreMultiStructLoad | NEONLoadStoreMulti4,
1726   NEON_ST1_1v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_1v,
1727   NEON_ST1_2v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_2v,
1728   NEON_ST1_3v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_3v,
1729   NEON_ST1_4v = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti1_4v,
1730   NEON_ST2    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti2,
1731   NEON_ST3    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti3,
1732   NEON_ST4    = NEONLoadStoreMultiStructStore | NEONLoadStoreMulti4
1733 };
1734 
1735 // NEON load/store multiple structures with post-index addressing.
1736 enum NEONLoadStoreMultiStructPostIndexOp {
1737   NEONLoadStoreMultiStructPostIndexFixed = 0x0C800000,
1738   NEONLoadStoreMultiStructPostIndexFMask = 0xBFA00000,
1739   NEONLoadStoreMultiStructPostIndexMask  = 0xBFE0F000,
1740   NEONLoadStoreMultiStructPostIndex = 0x00800000,
1741   NEON_LD1_1v_post = NEON_LD1_1v | NEONLoadStoreMultiStructPostIndex,
1742   NEON_LD1_2v_post = NEON_LD1_2v | NEONLoadStoreMultiStructPostIndex,
1743   NEON_LD1_3v_post = NEON_LD1_3v | NEONLoadStoreMultiStructPostIndex,
1744   NEON_LD1_4v_post = NEON_LD1_4v | NEONLoadStoreMultiStructPostIndex,
1745   NEON_LD2_post = NEON_LD2 | NEONLoadStoreMultiStructPostIndex,
1746   NEON_LD3_post = NEON_LD3 | NEONLoadStoreMultiStructPostIndex,
1747   NEON_LD4_post = NEON_LD4 | NEONLoadStoreMultiStructPostIndex,
1748   NEON_ST1_1v_post = NEON_ST1_1v | NEONLoadStoreMultiStructPostIndex,
1749   NEON_ST1_2v_post = NEON_ST1_2v | NEONLoadStoreMultiStructPostIndex,
1750   NEON_ST1_3v_post = NEON_ST1_3v | NEONLoadStoreMultiStructPostIndex,
1751   NEON_ST1_4v_post = NEON_ST1_4v | NEONLoadStoreMultiStructPostIndex,
1752   NEON_ST2_post = NEON_ST2 | NEONLoadStoreMultiStructPostIndex,
1753   NEON_ST3_post = NEON_ST3 | NEONLoadStoreMultiStructPostIndex,
1754   NEON_ST4_post = NEON_ST4 | NEONLoadStoreMultiStructPostIndex
1755 };
1756 
1757 enum NEONLoadStoreSingleOp {
1758   NEONLoadStoreSingle1        = 0x00000000,
1759   NEONLoadStoreSingle2        = 0x00200000,
1760   NEONLoadStoreSingle3        = 0x00002000,
1761   NEONLoadStoreSingle4        = 0x00202000,
1762   NEONLoadStoreSingleL        = 0x00400000,
1763   NEONLoadStoreSingle_b       = 0x00000000,
1764   NEONLoadStoreSingle_h       = 0x00004000,
1765   NEONLoadStoreSingle_s       = 0x00008000,
1766   NEONLoadStoreSingle_d       = 0x00008400,
1767   NEONLoadStoreSingleAllLanes = 0x0000C000,
1768   NEONLoadStoreSingleLenMask  = 0x00202000
1769 };
1770 
1771 // NEON load/store single structure.
1772 enum NEONLoadStoreSingleStructOp {
1773   NEONLoadStoreSingleStructFixed = 0x0D000000,
1774   NEONLoadStoreSingleStructFMask = 0xBF9F0000,
1775   NEONLoadStoreSingleStructMask  = 0xBFFFE000,
1776   NEONLoadStoreSingleStructStore = NEONLoadStoreSingleStructFixed,
1777   NEONLoadStoreSingleStructLoad  = NEONLoadStoreSingleStructFixed |
1778                                    NEONLoadStoreSingleL,
1779   NEONLoadStoreSingleStructLoad1 = NEONLoadStoreSingle1 |
1780                                    NEONLoadStoreSingleStructLoad,
1781   NEONLoadStoreSingleStructLoad2 = NEONLoadStoreSingle2 |
1782                                    NEONLoadStoreSingleStructLoad,
1783   NEONLoadStoreSingleStructLoad3 = NEONLoadStoreSingle3 |
1784                                    NEONLoadStoreSingleStructLoad,
1785   NEONLoadStoreSingleStructLoad4 = NEONLoadStoreSingle4 |
1786                                    NEONLoadStoreSingleStructLoad,
1787   NEONLoadStoreSingleStructStore1 = NEONLoadStoreSingle1 |
1788                                     NEONLoadStoreSingleStructFixed,
1789   NEONLoadStoreSingleStructStore2 = NEONLoadStoreSingle2 |
1790                                     NEONLoadStoreSingleStructFixed,
1791   NEONLoadStoreSingleStructStore3 = NEONLoadStoreSingle3 |
1792                                     NEONLoadStoreSingleStructFixed,
1793   NEONLoadStoreSingleStructStore4 = NEONLoadStoreSingle4 |
1794                                     NEONLoadStoreSingleStructFixed,
1795   NEON_LD1_b = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_b,
1796   NEON_LD1_h = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_h,
1797   NEON_LD1_s = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_s,
1798   NEON_LD1_d = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingle_d,
1799   NEON_LD1R  = NEONLoadStoreSingleStructLoad1 | NEONLoadStoreSingleAllLanes,
1800   NEON_ST1_b = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_b,
1801   NEON_ST1_h = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_h,
1802   NEON_ST1_s = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_s,
1803   NEON_ST1_d = NEONLoadStoreSingleStructStore1 | NEONLoadStoreSingle_d,
1804 
1805   NEON_LD2_b = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_b,
1806   NEON_LD2_h = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_h,
1807   NEON_LD2_s = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_s,
1808   NEON_LD2_d = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingle_d,
1809   NEON_LD2R  = NEONLoadStoreSingleStructLoad2 | NEONLoadStoreSingleAllLanes,
1810   NEON_ST2_b = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_b,
1811   NEON_ST2_h = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_h,
1812   NEON_ST2_s = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_s,
1813   NEON_ST2_d = NEONLoadStoreSingleStructStore2 | NEONLoadStoreSingle_d,
1814 
1815   NEON_LD3_b = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_b,
1816   NEON_LD3_h = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_h,
1817   NEON_LD3_s = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_s,
1818   NEON_LD3_d = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingle_d,
1819   NEON_LD3R  = NEONLoadStoreSingleStructLoad3 | NEONLoadStoreSingleAllLanes,
1820   NEON_ST3_b = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_b,
1821   NEON_ST3_h = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_h,
1822   NEON_ST3_s = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_s,
1823   NEON_ST3_d = NEONLoadStoreSingleStructStore3 | NEONLoadStoreSingle_d,
1824 
1825   NEON_LD4_b = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_b,
1826   NEON_LD4_h = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_h,
1827   NEON_LD4_s = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_s,
1828   NEON_LD4_d = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingle_d,
1829   NEON_LD4R  = NEONLoadStoreSingleStructLoad4 | NEONLoadStoreSingleAllLanes,
1830   NEON_ST4_b = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_b,
1831   NEON_ST4_h = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_h,
1832   NEON_ST4_s = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_s,
1833   NEON_ST4_d = NEONLoadStoreSingleStructStore4 | NEONLoadStoreSingle_d
1834 };
1835 
1836 // NEON load/store single structure with post-index addressing.
1837 enum NEONLoadStoreSingleStructPostIndexOp {
1838   NEONLoadStoreSingleStructPostIndexFixed = 0x0D800000,
1839   NEONLoadStoreSingleStructPostIndexFMask = 0xBF800000,
1840   NEONLoadStoreSingleStructPostIndexMask  = 0xBFE0E000,
1841   NEONLoadStoreSingleStructPostIndex = 0x00800000,
1842   NEON_LD1_b_post = NEON_LD1_b | NEONLoadStoreSingleStructPostIndex,
1843   NEON_LD1_h_post = NEON_LD1_h | NEONLoadStoreSingleStructPostIndex,
1844   NEON_LD1_s_post = NEON_LD1_s | NEONLoadStoreSingleStructPostIndex,
1845   NEON_LD1_d_post = NEON_LD1_d | NEONLoadStoreSingleStructPostIndex,
1846   NEON_LD1R_post  = NEON_LD1R | NEONLoadStoreSingleStructPostIndex,
1847   NEON_ST1_b_post = NEON_ST1_b | NEONLoadStoreSingleStructPostIndex,
1848   NEON_ST1_h_post = NEON_ST1_h | NEONLoadStoreSingleStructPostIndex,
1849   NEON_ST1_s_post = NEON_ST1_s | NEONLoadStoreSingleStructPostIndex,
1850   NEON_ST1_d_post = NEON_ST1_d | NEONLoadStoreSingleStructPostIndex,
1851 
1852   NEON_LD2_b_post = NEON_LD2_b | NEONLoadStoreSingleStructPostIndex,
1853   NEON_LD2_h_post = NEON_LD2_h | NEONLoadStoreSingleStructPostIndex,
1854   NEON_LD2_s_post = NEON_LD2_s | NEONLoadStoreSingleStructPostIndex,
1855   NEON_LD2_d_post = NEON_LD2_d | NEONLoadStoreSingleStructPostIndex,
1856   NEON_LD2R_post  = NEON_LD2R | NEONLoadStoreSingleStructPostIndex,
1857   NEON_ST2_b_post = NEON_ST2_b | NEONLoadStoreSingleStructPostIndex,
1858   NEON_ST2_h_post = NEON_ST2_h | NEONLoadStoreSingleStructPostIndex,
1859   NEON_ST2_s_post = NEON_ST2_s | NEONLoadStoreSingleStructPostIndex,
1860   NEON_ST2_d_post = NEON_ST2_d | NEONLoadStoreSingleStructPostIndex,
1861 
1862   NEON_LD3_b_post = NEON_LD3_b | NEONLoadStoreSingleStructPostIndex,
1863   NEON_LD3_h_post = NEON_LD3_h | NEONLoadStoreSingleStructPostIndex,
1864   NEON_LD3_s_post = NEON_LD3_s | NEONLoadStoreSingleStructPostIndex,
1865   NEON_LD3_d_post = NEON_LD3_d | NEONLoadStoreSingleStructPostIndex,
1866   NEON_LD3R_post  = NEON_LD3R | NEONLoadStoreSingleStructPostIndex,
1867   NEON_ST3_b_post = NEON_ST3_b | NEONLoadStoreSingleStructPostIndex,
1868   NEON_ST3_h_post = NEON_ST3_h | NEONLoadStoreSingleStructPostIndex,
1869   NEON_ST3_s_post = NEON_ST3_s | NEONLoadStoreSingleStructPostIndex,
1870   NEON_ST3_d_post = NEON_ST3_d | NEONLoadStoreSingleStructPostIndex,
1871 
1872   NEON_LD4_b_post = NEON_LD4_b | NEONLoadStoreSingleStructPostIndex,
1873   NEON_LD4_h_post = NEON_LD4_h | NEONLoadStoreSingleStructPostIndex,
1874   NEON_LD4_s_post = NEON_LD4_s | NEONLoadStoreSingleStructPostIndex,
1875   NEON_LD4_d_post = NEON_LD4_d | NEONLoadStoreSingleStructPostIndex,
1876   NEON_LD4R_post  = NEON_LD4R | NEONLoadStoreSingleStructPostIndex,
1877   NEON_ST4_b_post = NEON_ST4_b | NEONLoadStoreSingleStructPostIndex,
1878   NEON_ST4_h_post = NEON_ST4_h | NEONLoadStoreSingleStructPostIndex,
1879   NEON_ST4_s_post = NEON_ST4_s | NEONLoadStoreSingleStructPostIndex,
1880   NEON_ST4_d_post = NEON_ST4_d | NEONLoadStoreSingleStructPostIndex
1881 };
1882 
1883 // NEON modified immediate.
1884 enum NEONModifiedImmediateOp {
1885   NEONModifiedImmediateFixed = 0x0F000400,
1886   NEONModifiedImmediateFMask = 0x9FF80400,
1887   NEONModifiedImmediateOpBit = 0x20000000,
1888   NEONModifiedImmediate_MOVI = NEONModifiedImmediateFixed | 0x00000000,
1889   NEONModifiedImmediate_MVNI = NEONModifiedImmediateFixed | 0x20000000,
1890   NEONModifiedImmediate_ORR  = NEONModifiedImmediateFixed | 0x00001000,
1891   NEONModifiedImmediate_BIC  = NEONModifiedImmediateFixed | 0x20001000
1892 };
1893 
1894 // NEON shift immediate.
1895 enum NEONShiftImmediateOp {
1896   NEONShiftImmediateFixed = 0x0F000400,
1897   NEONShiftImmediateFMask = 0x9F800400,
1898   NEONShiftImmediateMask  = 0xBF80FC00,
1899   NEONShiftImmediateUBit  = 0x20000000,
1900   NEON_SHL      = NEONShiftImmediateFixed | 0x00005000,
1901   NEON_SSHLL    = NEONShiftImmediateFixed | 0x0000A000,
1902   NEON_USHLL    = NEONShiftImmediateFixed | 0x2000A000,
1903   NEON_SLI      = NEONShiftImmediateFixed | 0x20005000,
1904   NEON_SRI      = NEONShiftImmediateFixed | 0x20004000,
1905   NEON_SHRN     = NEONShiftImmediateFixed | 0x00008000,
1906   NEON_RSHRN    = NEONShiftImmediateFixed | 0x00008800,
1907   NEON_UQSHRN   = NEONShiftImmediateFixed | 0x20009000,
1908   NEON_UQRSHRN  = NEONShiftImmediateFixed | 0x20009800,
1909   NEON_SQSHRN   = NEONShiftImmediateFixed | 0x00009000,
1910   NEON_SQRSHRN  = NEONShiftImmediateFixed | 0x00009800,
1911   NEON_SQSHRUN  = NEONShiftImmediateFixed | 0x20008000,
1912   NEON_SQRSHRUN = NEONShiftImmediateFixed | 0x20008800,
1913   NEON_SSHR     = NEONShiftImmediateFixed | 0x00000000,
1914   NEON_SRSHR    = NEONShiftImmediateFixed | 0x00002000,
1915   NEON_USHR     = NEONShiftImmediateFixed | 0x20000000,
1916   NEON_URSHR    = NEONShiftImmediateFixed | 0x20002000,
1917   NEON_SSRA     = NEONShiftImmediateFixed | 0x00001000,
1918   NEON_SRSRA    = NEONShiftImmediateFixed | 0x00003000,
1919   NEON_USRA     = NEONShiftImmediateFixed | 0x20001000,
1920   NEON_URSRA    = NEONShiftImmediateFixed | 0x20003000,
1921   NEON_SQSHLU   = NEONShiftImmediateFixed | 0x20006000,
1922   NEON_SCVTF_imm = NEONShiftImmediateFixed | 0x0000E000,
1923   NEON_UCVTF_imm = NEONShiftImmediateFixed | 0x2000E000,
1924   NEON_FCVTZS_imm = NEONShiftImmediateFixed | 0x0000F800,
1925   NEON_FCVTZU_imm = NEONShiftImmediateFixed | 0x2000F800,
1926   NEON_SQSHL_imm = NEONShiftImmediateFixed | 0x00007000,
1927   NEON_UQSHL_imm = NEONShiftImmediateFixed | 0x20007000
1928 };
1929 
1930 // NEON table.
1931 enum NEONTableOp {
1932   NEONTableFixed = 0x0E000000,
1933   NEONTableFMask = 0xBF208C00,
1934   NEONTableExt   = 0x00001000,
1935   NEONTableMask  = 0xBF20FC00,
1936   NEON_TBL_1v    = NEONTableFixed | 0x00000000,
1937   NEON_TBL_2v    = NEONTableFixed | 0x00002000,
1938   NEON_TBL_3v    = NEONTableFixed | 0x00004000,
1939   NEON_TBL_4v    = NEONTableFixed | 0x00006000,
1940   NEON_TBX_1v    = NEON_TBL_1v | NEONTableExt,
1941   NEON_TBX_2v    = NEON_TBL_2v | NEONTableExt,
1942   NEON_TBX_3v    = NEON_TBL_3v | NEONTableExt,
1943   NEON_TBX_4v    = NEON_TBL_4v | NEONTableExt
1944 };
1945 
1946 // NEON perm.
1947 enum NEONPermOp {
1948   NEONPermFixed = 0x0E000800,
1949   NEONPermFMask = 0xBF208C00,
1950   NEONPermMask  = 0x3F20FC00,
1951   NEON_UZP1 = NEONPermFixed | 0x00001000,
1952   NEON_TRN1 = NEONPermFixed | 0x00002000,
1953   NEON_ZIP1 = NEONPermFixed | 0x00003000,
1954   NEON_UZP2 = NEONPermFixed | 0x00005000,
1955   NEON_TRN2 = NEONPermFixed | 0x00006000,
1956   NEON_ZIP2 = NEONPermFixed | 0x00007000
1957 };
1958 
1959 // NEON scalar instructions with two register operands.
1960 enum NEONScalar2RegMiscOp {
1961   NEONScalar2RegMiscFixed = 0x5E200800,
1962   NEONScalar2RegMiscFMask = 0xDF3E0C00,
1963   NEONScalar2RegMiscMask = NEON_Q | NEONScalar | NEON2RegMiscMask,
1964   NEON_CMGT_zero_scalar = NEON_Q | NEONScalar | NEON_CMGT_zero,
1965   NEON_CMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_CMEQ_zero,
1966   NEON_CMLT_zero_scalar = NEON_Q | NEONScalar | NEON_CMLT_zero,
1967   NEON_CMGE_zero_scalar = NEON_Q | NEONScalar | NEON_CMGE_zero,
1968   NEON_CMLE_zero_scalar = NEON_Q | NEONScalar | NEON_CMLE_zero,
1969   NEON_ABS_scalar       = NEON_Q | NEONScalar | NEON_ABS,
1970   NEON_SQABS_scalar     = NEON_Q | NEONScalar | NEON_SQABS,
1971   NEON_NEG_scalar       = NEON_Q | NEONScalar | NEON_NEG,
1972   NEON_SQNEG_scalar     = NEON_Q | NEONScalar | NEON_SQNEG,
1973   NEON_SQXTN_scalar     = NEON_Q | NEONScalar | NEON_SQXTN,
1974   NEON_UQXTN_scalar     = NEON_Q | NEONScalar | NEON_UQXTN,
1975   NEON_SQXTUN_scalar    = NEON_Q | NEONScalar | NEON_SQXTUN,
1976   NEON_SUQADD_scalar    = NEON_Q | NEONScalar | NEON_SUQADD,
1977   NEON_USQADD_scalar    = NEON_Q | NEONScalar | NEON_USQADD,
1978 
1979   NEONScalar2RegMiscOpcode = NEON2RegMiscOpcode,
1980   NEON_NEG_scalar_opcode = NEON_NEG_scalar & NEONScalar2RegMiscOpcode,
1981 
1982   NEONScalar2RegMiscFPMask  = NEONScalar2RegMiscMask | 0x00800000,
1983   NEON_FRSQRTE_scalar    = NEON_Q | NEONScalar | NEON_FRSQRTE,
1984   NEON_FRECPE_scalar     = NEON_Q | NEONScalar | NEON_FRECPE,
1985   NEON_SCVTF_scalar      = NEON_Q | NEONScalar | NEON_SCVTF,
1986   NEON_UCVTF_scalar      = NEON_Q | NEONScalar | NEON_UCVTF,
1987   NEON_FCMGT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGT_zero,
1988   NEON_FCMEQ_zero_scalar = NEON_Q | NEONScalar | NEON_FCMEQ_zero,
1989   NEON_FCMLT_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLT_zero,
1990   NEON_FCMGE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMGE_zero,
1991   NEON_FCMLE_zero_scalar = NEON_Q | NEONScalar | NEON_FCMLE_zero,
1992   NEON_FRECPX_scalar     = NEONScalar2RegMiscFixed | 0x0081F000,
1993   NEON_FCVTNS_scalar     = NEON_Q | NEONScalar | NEON_FCVTNS,
1994   NEON_FCVTNU_scalar     = NEON_Q | NEONScalar | NEON_FCVTNU,
1995   NEON_FCVTPS_scalar     = NEON_Q | NEONScalar | NEON_FCVTPS,
1996   NEON_FCVTPU_scalar     = NEON_Q | NEONScalar | NEON_FCVTPU,
1997   NEON_FCVTMS_scalar     = NEON_Q | NEONScalar | NEON_FCVTMS,
1998   NEON_FCVTMU_scalar     = NEON_Q | NEONScalar | NEON_FCVTMU,
1999   NEON_FCVTZS_scalar     = NEON_Q | NEONScalar | NEON_FCVTZS,
2000   NEON_FCVTZU_scalar     = NEON_Q | NEONScalar | NEON_FCVTZU,
2001   NEON_FCVTAS_scalar     = NEON_Q | NEONScalar | NEON_FCVTAS,
2002   NEON_FCVTAU_scalar     = NEON_Q | NEONScalar | NEON_FCVTAU,
2003   NEON_FCVTXN_scalar     = NEON_Q | NEONScalar | NEON_FCVTXN
2004 };
2005 
2006 // NEON scalar instructions with three same-type operands.
2007 enum NEONScalar3SameOp {
2008   NEONScalar3SameFixed = 0x5E200400,
2009   NEONScalar3SameFMask = 0xDF200400,
2010   NEONScalar3SameMask  = 0xFF20FC00,
2011   NEON_ADD_scalar    = NEON_Q | NEONScalar | NEON_ADD,
2012   NEON_CMEQ_scalar   = NEON_Q | NEONScalar | NEON_CMEQ,
2013   NEON_CMGE_scalar   = NEON_Q | NEONScalar | NEON_CMGE,
2014   NEON_CMGT_scalar   = NEON_Q | NEONScalar | NEON_CMGT,
2015   NEON_CMHI_scalar   = NEON_Q | NEONScalar | NEON_CMHI,
2016   NEON_CMHS_scalar   = NEON_Q | NEONScalar | NEON_CMHS,
2017   NEON_CMTST_scalar  = NEON_Q | NEONScalar | NEON_CMTST,
2018   NEON_SUB_scalar    = NEON_Q | NEONScalar | NEON_SUB,
2019   NEON_UQADD_scalar  = NEON_Q | NEONScalar | NEON_UQADD,
2020   NEON_SQADD_scalar  = NEON_Q | NEONScalar | NEON_SQADD,
2021   NEON_UQSUB_scalar  = NEON_Q | NEONScalar | NEON_UQSUB,
2022   NEON_SQSUB_scalar  = NEON_Q | NEONScalar | NEON_SQSUB,
2023   NEON_USHL_scalar   = NEON_Q | NEONScalar | NEON_USHL,
2024   NEON_SSHL_scalar   = NEON_Q | NEONScalar | NEON_SSHL,
2025   NEON_UQSHL_scalar  = NEON_Q | NEONScalar | NEON_UQSHL,
2026   NEON_SQSHL_scalar  = NEON_Q | NEONScalar | NEON_SQSHL,
2027   NEON_URSHL_scalar  = NEON_Q | NEONScalar | NEON_URSHL,
2028   NEON_SRSHL_scalar  = NEON_Q | NEONScalar | NEON_SRSHL,
2029   NEON_UQRSHL_scalar = NEON_Q | NEONScalar | NEON_UQRSHL,
2030   NEON_SQRSHL_scalar = NEON_Q | NEONScalar | NEON_SQRSHL,
2031   NEON_SQDMULH_scalar = NEON_Q | NEONScalar | NEON_SQDMULH,
2032   NEON_SQRDMULH_scalar = NEON_Q | NEONScalar | NEON_SQRDMULH,
2033 
2034   // NEON floating point scalar instructions with three same-type operands.
2035   NEONScalar3SameFPFixed = NEONScalar3SameFixed | 0x0000C000,
2036   NEONScalar3SameFPFMask = NEONScalar3SameFMask | 0x0000C000,
2037   NEONScalar3SameFPMask  = NEONScalar3SameMask | 0x00800000,
2038   NEON_FACGE_scalar   = NEON_Q | NEONScalar | NEON_FACGE,
2039   NEON_FACGT_scalar   = NEON_Q | NEONScalar | NEON_FACGT,
2040   NEON_FCMEQ_scalar   = NEON_Q | NEONScalar | NEON_FCMEQ,
2041   NEON_FCMGE_scalar   = NEON_Q | NEONScalar | NEON_FCMGE,
2042   NEON_FCMGT_scalar   = NEON_Q | NEONScalar | NEON_FCMGT,
2043   NEON_FMULX_scalar   = NEON_Q | NEONScalar | NEON_FMULX,
2044   NEON_FRECPS_scalar  = NEON_Q | NEONScalar | NEON_FRECPS,
2045   NEON_FRSQRTS_scalar = NEON_Q | NEONScalar | NEON_FRSQRTS,
2046   NEON_FABD_scalar    = NEON_Q | NEONScalar | NEON_FABD
2047 };
2048 
2049 // NEON scalar instructions with three different-type operands.
2050 enum NEONScalar3DiffOp {
2051   NEONScalar3DiffFixed = 0x5E200000,
2052   NEONScalar3DiffFMask = 0xDF200C00,
2053   NEONScalar3DiffMask  = NEON_Q | NEONScalar | NEON3DifferentMask,
2054   NEON_SQDMLAL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL,
2055   NEON_SQDMLSL_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL,
2056   NEON_SQDMULL_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL
2057 };
2058 
2059 // NEON scalar instructions with indexed element operand.
2060 enum NEONScalarByIndexedElementOp {
2061   NEONScalarByIndexedElementFixed = 0x5F000000,
2062   NEONScalarByIndexedElementFMask = 0xDF000400,
2063   NEONScalarByIndexedElementMask  = 0xFF00F400,
2064   NEON_SQDMLAL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLAL_byelement,
2065   NEON_SQDMLSL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMLSL_byelement,
2066   NEON_SQDMULL_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULL_byelement,
2067   NEON_SQDMULH_byelement_scalar  = NEON_Q | NEONScalar | NEON_SQDMULH_byelement,
2068   NEON_SQRDMULH_byelement_scalar
2069     = NEON_Q | NEONScalar | NEON_SQRDMULH_byelement,
2070 
2071   // Floating point instructions.
2072   NEONScalarByIndexedElementFPFixed
2073     = NEONScalarByIndexedElementFixed | 0x00800000,
2074   NEONScalarByIndexedElementFPMask
2075     = NEONScalarByIndexedElementMask | 0x00800000,
2076   NEON_FMLA_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLA_byelement,
2077   NEON_FMLS_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMLS_byelement,
2078   NEON_FMUL_byelement_scalar  = NEON_Q | NEONScalar | NEON_FMUL_byelement,
2079   NEON_FMULX_byelement_scalar = NEON_Q | NEONScalar | NEON_FMULX_byelement
2080 };
2081 
2082 // NEON scalar register copy.
2083 enum NEONScalarCopyOp {
2084   NEONScalarCopyFixed = 0x5E000400,
2085   NEONScalarCopyFMask = 0xDFE08400,
2086   NEONScalarCopyMask  = 0xFFE0FC00,
2087   NEON_DUP_ELEMENT_scalar = NEON_Q | NEONScalar | NEON_DUP_ELEMENT
2088 };
2089 
2090 // NEON scalar pairwise instructions.
2091 enum NEONScalarPairwiseOp {
2092   NEONScalarPairwiseFixed = 0x5E300800,
2093   NEONScalarPairwiseFMask = 0xDF3E0C00,
2094   NEONScalarPairwiseMask  = 0xFFB1F800,
2095   NEON_ADDP_scalar    = NEONScalarPairwiseFixed | 0x0081B000,
2096   NEON_FMAXNMP_scalar = NEONScalarPairwiseFixed | 0x2000C000,
2097   NEON_FMINNMP_scalar = NEONScalarPairwiseFixed | 0x2080C000,
2098   NEON_FADDP_scalar   = NEONScalarPairwiseFixed | 0x2000D000,
2099   NEON_FMAXP_scalar   = NEONScalarPairwiseFixed | 0x2000F000,
2100   NEON_FMINP_scalar   = NEONScalarPairwiseFixed | 0x2080F000
2101 };
2102 
2103 // NEON scalar shift immediate.
2104 enum NEONScalarShiftImmediateOp {
2105   NEONScalarShiftImmediateFixed = 0x5F000400,
2106   NEONScalarShiftImmediateFMask = 0xDF800400,
2107   NEONScalarShiftImmediateMask  = 0xFF80FC00,
2108   NEON_SHL_scalar  = NEON_Q | NEONScalar | NEON_SHL,
2109   NEON_SLI_scalar  = NEON_Q | NEONScalar | NEON_SLI,
2110   NEON_SRI_scalar  = NEON_Q | NEONScalar | NEON_SRI,
2111   NEON_SSHR_scalar = NEON_Q | NEONScalar | NEON_SSHR,
2112   NEON_USHR_scalar = NEON_Q | NEONScalar | NEON_USHR,
2113   NEON_SRSHR_scalar = NEON_Q | NEONScalar | NEON_SRSHR,
2114   NEON_URSHR_scalar = NEON_Q | NEONScalar | NEON_URSHR,
2115   NEON_SSRA_scalar = NEON_Q | NEONScalar | NEON_SSRA,
2116   NEON_USRA_scalar = NEON_Q | NEONScalar | NEON_USRA,
2117   NEON_SRSRA_scalar = NEON_Q | NEONScalar | NEON_SRSRA,
2118   NEON_URSRA_scalar = NEON_Q | NEONScalar | NEON_URSRA,
2119   NEON_UQSHRN_scalar = NEON_Q | NEONScalar | NEON_UQSHRN,
2120   NEON_UQRSHRN_scalar = NEON_Q | NEONScalar | NEON_UQRSHRN,
2121   NEON_SQSHRN_scalar = NEON_Q | NEONScalar | NEON_SQSHRN,
2122   NEON_SQRSHRN_scalar = NEON_Q | NEONScalar | NEON_SQRSHRN,
2123   NEON_SQSHRUN_scalar = NEON_Q | NEONScalar | NEON_SQSHRUN,
2124   NEON_SQRSHRUN_scalar = NEON_Q | NEONScalar | NEON_SQRSHRUN,
2125   NEON_SQSHLU_scalar = NEON_Q | NEONScalar | NEON_SQSHLU,
2126   NEON_SQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_SQSHL_imm,
2127   NEON_UQSHL_imm_scalar  = NEON_Q | NEONScalar | NEON_UQSHL_imm,
2128   NEON_SCVTF_imm_scalar = NEON_Q | NEONScalar | NEON_SCVTF_imm,
2129   NEON_UCVTF_imm_scalar = NEON_Q | NEONScalar | NEON_UCVTF_imm,
2130   NEON_FCVTZS_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZS_imm,
2131   NEON_FCVTZU_imm_scalar = NEON_Q | NEONScalar | NEON_FCVTZU_imm
2132 };
2133 
2134 // Unimplemented and unallocated instructions. These are defined to make fixed
2135 // bit assertion easier.
2136 enum UnimplementedOp {
2137   UnimplementedFixed = 0x00000000,
2138   UnimplementedFMask = 0x00000000
2139 };
2140 
2141 enum UnallocatedOp {
2142   UnallocatedFixed = 0x00000000,
2143   UnallocatedFMask = 0x00000000
2144 };
2145 
2146 }  // namespace vixl
2147 
2148 #endif  // VIXL_A64_CONSTANTS_A64_H_
2149